Bright Supernovae

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Bright Supernovae - 1998.

Bright Supernovae - 1998

This data comes from IAU Circulars and occasionally more data will be provided on IAU's Astronomical Headlines page. An archive of the 1998 updates and 1999 updates to this page are available.

This is a partial list of the SN discovered in 1998. For more information, you can look at the following Supernova Catalogs:

IAU List of Supernovae since 1885

Asiago's Supernova catalog

M. Richmonds's lisf of SNe since 1989

AstroArts Supernovae in 1998

163 (actually 1 fewer) Supernova were reported in 1998 (163 last year), 35 in NGC and IC galaxies (29 last year), 54 better than 18th Mag (36 last year). The brightest this year was 1998bu in M96 topping out at Mag 11.6, followed closely behind by 1998S at 11.9 and 1998aq at 12.0. 5 Extragalactic Novae were also reported in 1998.

Possible Supernova, IAUC 7865 discovered 1998/09/05.4 by U.K. Infrared Telescope
Found in NGC 7714 at R.A. = 23h36m14s.0, Decl. = +02°09'24"
Located 2" west and 5" north of the nucleus of NGC 7714
Mag 17.3, Type unknown (References: SN 1999dn)

1998ff, IAUC 7740 discovered 1998/09/28.000 by Supernova at High Z Team at R.A. = 22h32m48s.90, Decl. = -60°34'04".8 (In HDF-South) Mag 25.3:9/28, Type unknown

1998fe, IAUC 7438 discovered 1998/07/19.3 by LOSS
Found in NGC 6027D at R.A. = 15h59m12s.84, Decl. = +20°45'39".0
Located 0".7 west and 2".4 north of the nucleus of NGC 6027D (Discovery image)
Mag 18.0, Type unknown

1998fd, IAUC 7082 discovered 1998/12/24.000 by Wise Observatory Optical Transients Search at R.A. = 01h19m18s.06, Decl. = +15°55'24".1 Mag 21.3:12/24, Type Ia (z=0.24)

1998fc, IAUC 7082 discovered 1998/12/20.000 by Wise Observatory Optical Transients Search at R.A. = 02h59m12s.61, Decl. = +03°29'39".0 Mag 20.5:12/20, Type Ia (z=0.10)

1998fb, IAUC 7077 discovered 1998/12/20.000 by Mount Stromlo Abell Cluster Supernova Search Team at R.A. = 03h30m45s.86, Decl. = -52°32'12".2 Mag 18.4:12/20, Type unknown

1998fa, IAUC 7073 discovered 1998/12/25 by Lick Observatory Supernova Search
Found in UGC 3513 at R.A. = 06h42m51s.51, Decl. = +41°25'18".9
Located 4".0 west and 3".8 north of the nucleus of UGC 3513 (Discovery image) (Hubert Lehmann image) (Luis Hernandez image)
Mag 18.0, Type IIb-pec (z=0.025) (References: IAUC 7077, 7090; SN 2003bq)

1998ez, IAUC 7070 discovered 1998/12/08.000 by Mount Stromlo Abell Cluster Supernova Search Team at R.A. = 03h57m32s.93, Decl. = -27°12'13".6 Mag 20.0:12/8, Type II (offset 1E 4N) (z=0.07)

1998ey, IAUC 7065 discovered 1998/12/05 by Ron Arbour
Found in NGC 7080 at R.A. = 21h30m00s.67, Decl. = +26°43'21".4 (AUDE detailed finder chart)
Located 18" west and 20" north of the center of NGC 7080
Mag 16.8, Type Ic-pec (CfA Spectrum) (References: IAUC 7066, 7077, 7078, 7080)
SN 1998ey sub-page with images.

1998ex, IAUC 7061 discovered 1998/11/25 by Jean Mueller
Found in MCG +11-10-16 at R.A. = 07h41m42s.287, Decl. = +64°44'02".3
Located 5".1 west and 10".1 north of the nucleus of MCG +11-10-16 (Hubert Lehmann image (Caption))
Mag 18.5:11/25, Type Ia (z=0.037)

1998ew, IAUC 7061 discovered 1998/11/23 by Roberto Antezana
Found in NGC 6943 at R.A. = 20h44m32s.17, Decl. = -68°43'37"3
Located 5" west and 73" north of the nucleus of NGC 6943 (J. Maza image)
Mag 14.9 (14.0:11/23), Type II (z=0.010)
VSNet 1998ew page

1998ev, IAUC 7055 discovered 1998/11/23.000 by Wise Observatory Optical Transients Search
Found in an anonymous galaxy at R.A. = 01h04m12s.68, Decl. = +25°00'59".1
Located 0" east and 0" north of the center of the host galaxy
Mag 14.0:11/23, Type unknown (z=0.157?)

1998eu, IAUC 7055 discovered 1998/11/14.000 by Wise Observatory Optical Transients Search at R.A. = 00h59m58s.66, Decl. = +14°18'00".4 Mag 19.7:11/14, Type unknown (z=0.181)

1998et, IAUC 7054 discovered 1998/11/17.000 by Jean Mueller
Found in an anonymous galaxy at R.A. = 06h59m18s.70, Decl. = +57°44'41".0
Located 5" west and 5" north of the center of the host galaxy (L. Kiss image)
Mag 18.0:11/17, Type II (z=0.040)

1998es, IAUC 7050 discovered 1998/11/13 by Lick Observatory Supernova Search
Found in NGC 632 at R.A. = 01h37m17s.60, Decl. = +05°52'50".6 (AUDE detailed finder chart)
Located 0".4 west and 10".8 north of the nucleus of NGC 632
Mag 17.7 (14.6:11/13), Type Ia-pec (z=0.011) (CfA Spectrum) (References: IAUC 7054, 7059, 7070, 7078, 7094, 7103, 7106)
SN 1998es sub-page with images.

1998eo - 1998eq, IAUC 7046 discovered 1998/10/15.000 by Supernova Cosmology Project

1998eo discovered 1998/10/15.000 at R.A. = 04h56m15s.47, Decl. = -03°46'38".7 Mag 23.6:10/15, Type Ia (z=0.84)
1998ep discovered 1998/10/15.000 at R.A. = 23h19m57s.67, Decl. = +16°03'19".5 Mag 20.1:10/15, Type Ia (z=0.11) (6W 3S)
1998eq discovered 1998/10/15.000 at R.A. = 23h20m27s.47, Decl. = +15°55'43".7 Mag 24.8:10/15, Type Ia

1998en, IAUC 7045 discovered 1998/10/30.000 by Lick Observatory Supernova Search
Found in UGC 3645 at R.A. = 07h04m00s.05, Decl. = +50°40'30".0
Located 10" west and 18" south of the center of UGC 3645 (Discovery image) (L. Kiss image)
Mag 18.4:10/30, Type unknown (z=0.021)

1998em, IAUC 7041 discovered 1998/10/26.96 by L. E. Gonzalez
Found in IC 4837A at R.A. = 19h15m12s.69, Decl. = -54°06'49".7
Located 26" west and 67" north of the nucleus of IC 4837A
Mag 16.5, Type Ia (z=0.0091) (References: SN 2005aw)

1998el, IAUC 7039 discovered 1998/10/22.000 by Mount Stromlo Abell Cluster Supernova Search at R.A. = 03h21m01s.21, Decl. = -41°33'06".6 Mag 20.5:10/22, Type unknown (offset 1E)

1998ek, IAUC 7035 discovered 1998/10/15.000 by Roberto Antezana
Found in an anonymous galaxy at R.A. = 06h36m30s.59, Decl. = -37°58'40".2
Located 14" east and 4" north of the center of the host galaxy
Mag 18.0:10/15, Type unknown

1998ej, IAUC 7035 discovered 1998/10/15.000 by Roberto Antezana
Found in an anonymous galaxy at R.A. = 23h41m00s.95, Decl. = -38°56'37".2
Located 4" west and 6" north of the center of the host galaxy
Mag 19.0:10/15, Type unknown

1998ei, IAUC 7034 discovered 1998/10/15.000 by Roberto Antezana
Found in an anonymous galaxy at R.A. = 23h32m03s.75, Decl. = -39°33'18".4
Located 12" west and 11" south of the center of the host galaxy
Mag 18.5:10/15, Type unknown

1998eh, IAUC 7034 discovered 1998/10/15.000 by Marina Wischnjewsky
Found in ESO 74-G9 at R.A. = 20h48m57s.82, Decl. = -69°05'05".7
Located 5" east and 26" north of the center of ESO 74-G9
Mag 18.0:10/15, Type unknown

1998eg, IAUC 7033 discovered 1998/10/19.000 by Tom Boles
Found in UGC 12133 at R.A. = 22h39m30s.26, Decl. = +08°36'21".3
Located 26" west and 25" south of the center of UGC 12133 (L. Kiss image)
Mag 16.0:10/19, Type Ia (z=0.025)

1998ef, IAUC 7032 discovered 1998/10/18.000 by Lick Observatory Supernova Search
Found in UGC 646 at R.A. = 01h03m26s.87, Decl. = +32°14'12".4
Located 6" east and 2" south of the center of UGC 646 (Discovery image) (Ca' Bionda Observatory image)
Mag 15.2:10/18, Type Ia

1998ee, IAUC 7030 discovered 1998/10/14.000 by Marina Wischnjewsky
Found in an anonymous galaxy at R.A. = 01h53m31s.33, Decl. = -53°58'19".5
Located 5" east and 2" north of the center of the host galaxy
Mag 17.5:10/14, Type IIP (z=0.050)

1998ed, IAUC 7030 discovered 1998/09/16.000 by Jean Mueller
Found in an anonymous galaxy at R.A. = 23h00m14s.64, Decl. = -13°13'58".2
Located 6" west and 3" south of the center of the host galaxy
Mag 18.0:9/16, Type unknown

1998ec, IAUC 7022 discovered 1998/09/26 by BAO Supernova Survey
Found in UGC 3576 at R.A. = 06h53m06s.11, Decl. = +50°02'22".1
Located 8".7 west and 19".5 north of the center of UGC 3576 (G. Sala image) (Laszlo Kiss image)
Mag 18.4, Type Ia (z=0.0198) (References: IAUC 7024, 7070)

1998eb, IAUC 7016 discovered 1998/09/17 by Lick Observatory Supernova Search
Found in NGC 1961 at R.A. = 05h42m12s.02, Decl. = +69°22'26".3
Located 38".8 east and 17".0 south of the nucleus of NGC 1961 (Discovery image) (G. Sala image) (Josep MЄ Bosch image) (Norbert Stapper image (mirror)) (Ca' Bionda Observatory image)
Mag < 20.0, Type Ia (z=0.013) (References: IAUC 7018, 7019; SN 2001is)

1998dy - 1998ea, IAUC 7015 discovered by Mount Stromlo Abell Cluster Supernova Search

1998dy discovered 1998/08/01.000 at R.A. = 04h29m54s.24, Decl. = -61°12'43".1 Mag 19.0:8/1, Type unknown
1998dz discovered 1998/09/03.000 at R.A. = 03h20m58s.18, Decl. = -41°05'22".8 Mag 18.5:9/3, Type Ia (z=0.09?)
1998ea discovered 1998/09/06.000 at R.A. = 04h33m46s.59, Decl. = -61°35'20".4 Mag 19.5:9/6, Type Ia (z=0.057) (6W 2N)

1998dx, IAUC 7011 discovered 1998/09/10 by Lick Observatory Supernova Search
Found in UGC 11149 at R.A. = 18h11m11s.89, Decl. = +49°51'40".7
Located 20".9 east and 12".2 south of the nucleus of UGC 11149 (Discovery image) (Mike Schwartz image) (Promoid Observatory image) (Norbert Stapper image) (Hans Dannhoff image)
Mag 17.9, Type Ia (z=0.05?) (References: SN 2003hr)

1998du -1998dw, IAUC 7007 discovered by Mount Stromlo Abell Cluster Supernova Search

1998du discovered 1998/08/14.000 at R.A. = 00h45m11s.73, Decl. = -63°48'21".6 Mag 20.5:8/14, Type unknown (z=0.076) (2E 1N)
1998dv discovered 1998/08/22.000 at R.A. = 04h29m46s.79, Decl. = -61°30'25".4 Mag 20.2:8/22, Type unknown (z=0.156) (2W 0N)
1998dw discovered 1998/08/28.000 at R.A. = 01h09m11s.56, Decl. = -15°29'46".7 Mag 18.8:8/28, Type Ia (z=0.050) (3E 1N)

1998dt, IAUC 7006 discovered 1998/09/01 by Lick Observatory Supernova Search
Found in NGC 945 at R.A. = 02h28m35s.729, Decl. = -10°32'59".8
Located 23".1 west and 39".5 south of the nucleus of NGC 945 (Discovery image) (Pedro RИ image) (Promoid Observatory image) (Ca' Bionda Observatory image)
Mag 16.6, Type Ib (z=0.0153) (References: IAUC 7011)

1998ds, IAUC 7006 discovered 1998/08/28.000 by Roberto Antezana
Found in an anonymous galaxy at R.A. = 03h17m19s.21, Decl. = -53°10'58".0
Located 10" west and 3" north of the center of the host galaxy
Mag 18.5:8/28, Type Ia

1998dr, IAUC 7006 discovered 1998/08/28.000 by Roberto Antezana
Found in an anonymous galaxy at R.A. = 00h09m30s.68, Decl. = -48°50'39".1
Located 0" east and 2" north of the center of the host galaxy
Mag 18.0:8/28, Type Ia

1998dq, IAUC 6998 discovered 1998/08/23 by Brett White
Found in NGC 6754 at R.A. = 19h11m23s.78, Decl. = -50°38'25".5 (5" from SN 1998X)
Located 18".7 west and 5" north of the nucleus of NGC 6754 (Brendan Downs image) (VSNet 1998dq page) (Ted Dobosz image)
Mag 14.6, Type Ia (z=0.011) (References: IAUC 7000; SN 1998X, 2000do)

1998do, 1998dp, IAUC 6996 discovered by Mount Stromlo Abell Cluster Supernova Search Team

1998do discovered 1998/08/01.000 at R.A. = 01h14m30s.92, Decl. = +00°28'13".0 Mag 19.0:8/1, Type unknown (z=0.092) (offset 0E 0N)
1998dp discovered 1998/08/01.000 at R.A. = 21h58m28s.12, Decl. = -19°58'05".9 Mag 20.3:8/1, Type unknown (z=0.057) (offset 1N)

1998dn, IAUC 6994 discovered 1998/08/19 by BAO Supernova Survey
Found in NGC 337A at R.A. = 01h01m27s.08, Decl. = -07°36'36".7
Located 102" west and 79" south of the center of NGC 337A (Enrico Prosperi image (filtered version)) (Salvo Massaro image) (Giuseppe A. Sala image) (Ca' Bionda Observatory image)
Mag 15.8, Type II

1998dm, IAUC 6993 discovered 1998/08/22 by Lick Observatory Supernova Search
Found in MCG -1-4-44 at R.A. = 01h26m13s.97, Decl. = -06°06'14".0 (VSnet 98dm page)
Located 13".8 west and 37".0 south of the nucleus of MCG -1-4-44 (Discovery image) (Enrico Prosperi image) (Salvo Massaro image) (Enrico Prosperi image) (LOSS color image)
Mag 14.9, Type Ia (References: IAUC 6997)

1998dl, IAUC 6992 discovered 1998/08/20 by Lick Observatory Supernova Search
Found in NGC 1084 at R.A. = 02h46m01s.477, Decl. = -07°34'25".10
Located 21".6 east and 11".6 north of the nucleus of NGC 1084 (Discovery image) (S. Massaro image) (F.Hernandez image) (Pedro RИ image)
Mag 15.1, Type II (References: IAUC 6994, 7005; SN 2009H, 1996an, 1963P)

1998dk, IAUC 6991 discovered 1998/08/19 by Lick Observatory Supernova Search
Found in UGC 139 at R.A. = 00h14m32s.16, Decl. = -00°44'10".9
Located 5".4 east and 3".1 north of the nucleus of UGC 139 (Discovery image) (F.Hernandez image) (Mike Schwartz image) (Ca' Bionda Observatory image)
Mag 15.2, Type Ia (References: IAUC 6997, 7005)

1998dj, IAUC 6986 discovered 1998/08/08 by Lick Observatory Supernova Search
Found in NGC 788 at R.A. = 02h01m06s.92, Decl. = -06°49'04".8
Located 7".1 east and 8".6 south of the nucleus of NGC 788 (Discovery image) (VSnet 98dj web page) (F.Hernandez image)
Mag 16.0, Type Ia (References: IAUC 6990)

1998di = KL Dra

1998dh, IAUC 6978 discovered 1998/07/20 by Lick Observatory Supernova Search
Found in NGC 7541 at R.A. = 23h14m40s.31, Decl. = +04°32'14".1
Located 53".5 west and 10".4 north of the nucleus of NGC 7541
Mag 16.5, Type Ia (z=0.0089) (CfA Spectrum) (References: IAUC 6980, 6981, 6989, 6999, 7011)
SN 1998dh images subpage

1998dg, IAUC 6978 discovered 1998/07/19 by Marina Wischnjewsky
Found in MCG -3-34-8 at R.A. = 13h10m23s.85, Decl. = +16°56'08".11
Located 17".5 west and 17".1 south of the nucleus of MCG -3-34-8
Mag 16, Type Ia (z=0.01?) (References: IAUC 6989)

1998df, IAUC 6978 discovered 1998/07/18.000 by Roberto Antezana
Found in an anonymous galaxy at R.A. = 21h32m30s.57, Decl. = -65°03'32".8
Located 2" west and 7" south of the center of the host galaxy
Mag 18.5:7/18, Type unknown

1998de, IAUC 6977 discovered 1998/07/23 by Lick Observatory Supernova Search
Found in NGC 252 at R.A. = 00h48m06s.88, Decl. = +27°37'28".5
Located 71".9 east and 3".4 north of the nucleus of NGC 252 (Discovery image) (CfA image) (Kopernik image)
Mag 17.6, Type Ia-pec (z=0.0167) (CfA Spectrum) (References: IAUC 6980, 7005)

1998dd, IAUC 6974 discovered 1998/07/18 by Roberto Antezana
Found in ESO 383-G78 at R.A. = 13h47m33s.95, Decl. = -33°02'31".4
Located 2".8 east and 2".5 north of the nucleus of ESO 383-G78
Mag 17.0:7/18, Type unknown

1998cy -1998dc, IAUC 6972 discovered by EROS

1998cy discovered 1998/05/20.000 at R.A. = 14h02m42s.82, Decl. = -05°45'05".7 Mag 19.5:5/20, Type unknown
1998cz discovered 1998/05/21.000 at R.A. = 12h03m06s.50, Decl. = -12°37'41".5 Mag 18.5:5/21, Type unknown
1998da discovered 1998/07/01.000 at R.A. = 00h27m13s.76, Decl. = -39°25'25".6 Mag 20.5:7/1, Type unknown (2W 1S)
1998db discovered 1998/07/01.000 at R.A. = 22h55m54s.64, Decl. = -39°26'29".8 Mag 19.4:7/1, Type unknown
1998dc discovered 1998/07/05.000 at R.A. = 22h20m16s.10, Decl. = -44°33'56".1 Mag 19.5:7/5, Type unknown (25W 4N)

1998cx, IAUC 6970 discovered 1998/07/04 by Alexander Wassilieff
Found in NGC 6209 at R.A. = 16h54m55s.31, Decl. = -72°35'24".0
Located 10".9 west and 12".1 south of the nucleus of NGC 6209
Mag 18.3, Type Ia (z=0.020) (References: IAUC 6976; SN 2009fz)

1998cw, IAUC 6968 discovered 1998/06/24.000 by Roberto Antezana
Found in an anonymous galaxy at R.A. = 22h56m19s.67, Decl. = -35°09'59".9
Located 0" east and 0" north of the center of the host galaxy
Mag 17.5:6/24, Type Ia

1998cv, IAUC 6968 discovered 1998/06/24 by Roberto Antezana
Found in ESO 237-G42 at R.A. = 22h09m46s.29, Decl. = -49°47'43".0
Located 5".0 east and 12".7 north of the center of ESO 237-G42
Mag 17.5:6/24, Type Ic (z=0.027)

1998cu, IAUC 6958 discovered 1998/06/30 by Lick Observatory Supernova Search
Found in IC 1525 at R.A. = 23h59m12s.95, Decl. = +46°52'31".8
Located 29.2" west and 50.3" south of the center of IC 1525 (Discovery image) (Monte Gemelli Observatory image)
Mag 18.1, Type II (z=0.0167) (References: IAUC 6970; SN 2009es)

1998ct, IAUC 6957 discovered 1998/06/30 by Mike Schwartz
Found in UGC 10062 at R.A. = 15h51m11s.67, Decl. = +21°56'36".0
Located 5" west and 2" north of the center of UGC 10062 (Discovery image (local mirror))
Mag 16.1:6/30, Type IIn (References: IAUC 6964)

1998cs, IAUC 6957 discovered 1998/06/29 by Tim Puckett
Found in UGC 10432 at R.A. = 16h30m39s.22, Decl. = +41°12'54".4
Located 2".2 east and 16" north of the center of UGC 10432 (Discovery image) (Spaceguard Canada image) (Ca' Bionda Observatory image)
Mag 17.5:6/29, Type Ia (z=0.0325) (References: IAUC 6960, 6982, 7370)

1998cr, IAUC 6956 discovered 1998/06/28 by Tim Puckett and Alex Langoussis
Found in PGC 57979 at R.A. = 16h23m17s.25, Decl. = +37°12'47".5
Located 6".0 west and 7.5" south of the center of PGC 57979 (Discovery image) (Steward Obsevatory image) (Ca' Bionda Observatory image)
Mag 17.5, Type unknown (References: IAUC 7370)

1998cq, IAUC 6955 discovered 1998/06/17.000 by Mount Stromlo Abell Cluster Supernova Search Team at R.A. = 00h45m06s.11, Decl. = -63°49'50".4 Mag 19.3:6/17, Type Ia (offset 0E 1N) (z=0.15?)

1998cp, IAUC 6954 discovered 1998/06/21 by Mike Schwartz
Found in MCG +9-21-11 at R.A. = 12h31m52s.35, Decl. = +52°23'39".5
Located 3" east and 24" south of the center of MCG +9-21-11 (Discovery image (local mirror))
Mag 18.0:6/21, Type unknown (References: IAUC 6971)

1998co, IAUC 6950 discovered 1998/06/21 by Wayne Johnson (aka Mr. Galaxy)
Found in NGC 7131 at R.A. = 21h47m36s.24, Decl. = -13°10'52".3
Located 2.4" east and 4.6" north of the center of NGC 7131 (Discovery image) (CfA image) (Wayne Johnson image)
Mag 16.0:6/21, Type Ia (z=0.0182) (CfA Spectrum) (References: IAUC 7083, 7101)

1998cn, IAUC 6944 discovered 1998/06/17 by Mike Schwartz
Found in NGC 3735 at R.A. = 11h35m54s.44, Decl. = +70°32'10".2
Located 10" west and 6" north of the center of NGC 3735 (Discovery image (local mirror) (Pedro RИ image) (D. Hanzl image) (Juan Goncalves and J. Porto image) (M1 SN group images) (Ca' Bionda image)
Mag 15.8, Type Ia (z=0.0093) (References: IAUC 6947, 6950)

1998cm, IAUC 6943 discovered 1998/06/10.000 by Mount Stromlo Abell Cluster Supernova Search Team at R.A. = 13h44m12s.97, Decl. = +03°00'40".3 Mag 18.6:6/10, Type Ia (z=0.08)

1998cl, IAUC 6934 discovered 1998/06/03 by Mike Schwartz
Found in MRK 261 at R.A. = 13h29m59s.84, Decl. = +75°34'09".0
Located 5" west and 1" north of the center of MRK 261 (M. Schwartz discovery image) (Ca' Bionda Observatory image)
Mag 17.0:6/3, Type Ia (References: IAUC 6946)

1998ck, IAUC 6925 discovered 1998/05/31 by Marina Wischnjewsky
Found in ESO 434-G20 at R.A. = 09h41m06s.00, Decl. = -29°06'17".7
Located 7" west and 1" south of the center of ESO 434-G20
Mag 17.0:5/31, Type Ia (z=0.038) (References: IAUC 6956)

1998cj, IAUC 6921 discovered 1998/05/21 by EROS
Found in NGC 4263 at R.A. = 12h19m43s.30, Decl. = -12°13'41".8 (EROS finder chart)
Located 9".4 east and 10".8 south of the center of NGC 4263 (EROS Discovery image) (F.Hernandez image)
Mag 17.2, Type II

1998ci, IAUC 6921 discovered 1998/05/19.000 by EROS at R.A. = 12h41m01s.12, Decl. = -06°39'48".2 Mag 18.0:5/19, Type Ia (z=0.025)

1998ch, IAUC 6917 discovered 1998/05/18.000 by Mount Stromlo Abell Cluster Supernova Search Team at R.A. = 13h29m13s.31, Decl. = -29°17'26".8 Mag 20.3:5/18, Type II (offset 1W 2S) (z=0.047)

1998cg, IAUC 6917 discovered 1998/05/01.000 by Gal-Yam, Maoz
Found in an anonymous galaxy at R.A. = 12h18m18s.13, Decl. = +20°44'26".0
Located 0" east and 4" south of the center of the host galaxy
Mag 18.5:5/1, Type Ia (z=0.119)

1998cf, IAUC 6914 discovered 1998/03/31 by Eric Emsellem; Geoffrey Clayton, Karl Gordon
Found in NGC 3504 at R.A. = 11h03m11s.21, Decl. = +27°58'21".0
Located 0.6" east and 5.3" south of the center of NGC 3504 (Discovery image)
Mag 15.0:3/31, Type unknown (References: IAUC 6926; SN 2001ac)

1998ce, IAUC 6912 discovered 1998/05/19 by Perth Astronomical Research Group
Found in MCG -4-24-19 at R.A. = 10h10m34s.70, Decl. = -25°49'30".8
Located 9" west and 8" south of the center of MCG -4-24-19 (Discovery image)
Mag 16.0:5/19, Type II (References: IAUC 6917, 6922, 6956)

1998cd, IAUC 6909 discovered 1998/05/17.000 by Jean Mueller
Found in 2MFGC 08366 at R.A. = 10h45m04s.16, Decl. = +39°25'12".5
Located 8" east and 6" south of the center of the 2MFGC 08366
Mag 17.5:5/17, Type Ia

1998cc, IAUC 6907 discovered 1998/05/15 by Lick Observatory Supernova Search
Found in NGC 5172 at R.A. = 13h29m19s.31, Decl. = +17°02'42".4
Located 0" east and 24.5" south of the center of NGC 5172 (Lick Observatory Discovery image) (Colleen Gino image) (Jim Wentworth images) (Michael Schwartz image) (F.Hernandez image)
Mag 18.1 (15.3:5/27), Type Ib (z=0.0136) (References: SN 2001R)

1998bx - 1998cb, IAUC 6904 discovered by EROS

1998bx discovered 1998/04/21.000 at R.A. = 11h12m28s.05, Decl. = -05°58'09".9 Mag 19.6:4/21, Type unknown (offset 1W 5N)
1998by discovered 1998/04/21.000 at R.A. = 11h25m07s.20, Decl. = -05°23'15".2 Mag 19.5:4/21, Type unknown (offset 1E 1S)
1998bz discovered 1998/04/24.000 at R.A. = 12h11m05s.84, Decl. = -05°35'33".8 Mag 19.1:4/24, Type unknown
1998ca discovered 1998/04/24.000 at R.A. = 12h13m29s.24, Decl. = -06°23'42".0 Mag 18.8:4/24, Type II (z=0.028) (7W 7N)

1998bw (= GRB980425), IAUC 6895 discovered 1998/04/28 by European Southern Observatory
Found in ESO 184-G82 at R.A. = 19h35m03s.31, Decl. = -52°50'46".65
Located in ESO 184-G82 (APOD image) (T. Galama image) (NTT image) (ESO image (smaller version)) (SpaceViews article) (Crisian Oliveira image)
Mag 14.0 (13.5:5/10), Type Ib (z=0.0085) (References: IAUC 6884, 6896, 6898, 6899, 6901, 6903, 6918, 6946, 6969, 7017, 7215)

1998bv, IAUC 6900 discovered 1998/04/06.000 by Kniazev et al.
Found in an anonymous galaxy at R.A. = 10h38m25s.40, Decl. = +47°42'32".8
Located 3" west and 4" south of the center of the host galaxy
Mag 17.1:4/6, Type IIP

1998bu, IAUC 6899 discovered 1998/05/09 by Mirko Villi
Found in M96 at R.A. = 10h46m46s.03, Decl. = +11°50'07".15 (M. Funada detailed finder chart) (AAVSO finder chart)
Located 4.3" east and 55.3" north of the center of NGC 3368 (= M96)
Mag 21.1 (11.6:5/14), Type Ia (References: IAUC 6902, 6905, 6907, 6918, 6921, 6926, 6937, 6982, 7070, 7103, 7144, 7391)
SN 1998bu images subpage

1998bq - 1998bt IAUC 6893 discovered by Mount Stromlo Abell Cluster Supernova Search Team

1998bq discovered 1998/04/28.000 at R.A. = 15h10m20s.53, Decl. = +05°51'16".5 Mag 19.2:4/28, Type unknown (1W 2S)
1998br discovered 1998/04/28.000 at R.A. = 15h10m24s.94, Decl. = +05°55'30".0 Mag 20.5:4/28, Type unknown (5E 4N)
1998bs discovered 1998/04/28.000 at R.A. = 13h26m31s.51, Decl. = -31°09'08".9 Mag 20.6:4/28, Type unknown (0E 0N)
1998bt discovered 1998/03/10.000 at R.A. = 13h25m41s.93, Decl. = -26°46'55".7 Mag 19.7:3/10, Type unknown

1998bp, IAUC 6890 discovered 1998/04/29 by Mark Armstrong
Found in NGC 6495 at R.A. = 17h54m50s.74, Decl. = +18°19'50".5
Located 1" east and 13" north of the center of NGC 6495
Mag 15.2 (14.8:4/29), Type Ia (z=0.015) (CfA Spectrum) (References: IAUC 6891, 6892, 6982)
VSNet's sn1998bp web page
SN 1998bp images subpage

1998bo, IAUC 6889 discovered 1998/04/22.000 by Marina Wischnjewsky
Found in ESO 185-G31 at R.A. = 19h57m22s.55, Decl. = -55°08'18".4
Located 3" east and 5" south of the center of ESO 185-G31
Mag 18.0:4/22, Type Ic (z=0.016)

1998bn, IAUC 6886 discovered 1998/04/17 by Lick Observatory Supernova Search
Found in NGC 4462 at R.A. = 12h29m18s.88, Decl. = +23°09'49".25 (AAVSO finder chart)
Located 32".3 west and 9".7 north of the center of NGC 4462
Mag 14.8 (13.7:4/17), Type Ia (z=0.0053) (References: IAUC 6888, 6889, 6927, 6982)
SN 1998bn images subpage

1998bm, IAUC 6882, discovered 1998/04/21 by Lick Observatory Supernova Search
Found in IC 2458 at R.A. = 09h21m30s.498, Decl. = +64°14'25".4
Located 1" east and 5" north of the center of IC 2458 (Lick Observatory Discovery image)
Mag 17.6, Type II
VSNet's sn1998bm web page

1998as - 1998bn IAUC 6881 discovered by Supernova Cosmology Project

1998as discovered 1998/03/22.000 at R.A. = 10h53m56s.22, Decl. = -03°39'10".0 Mag 22.0:3/22, Type Ia (z=0.36)
1998at discovered 1998/03/22.000 at R.A. = 10h54m54s.37, Decl. = -03°44'10".0 Mag 23.8:3/22, Type II (z=0.40)
1998au discovered 1998/03/22.000 at R.A. = 10h55m46s.11, Decl. = -04°19'51".0 Mag 23.5:3/22, Type unknown
1998av discovered 1998/03/22.000 at R.A. = 10h56m07s.98, Decl. = -04°11'20".6 Mag 23.3:3/22, Type unknown
1998aw discovered 1998/03/22.000 at R.A. = 10h56m15s.02, Decl. = -04°15'21".5 Mag 25.0:3/22, Type Ia (z=0.44)
1998ax discovered 1998/03/22.000 at R.A. = 10h57m16s.38, Decl. = -03°33'59".2 Mag 22.3:3/22, Type Ia (z=0.50)
1998ay discovered 1998/03/22.000 at R.A. = 10h57m21s.51, Decl. = -03°14'49".9 Mag 22.9:3/22, Type Ia (z=0.64)
1998az discovered 1998/03/22.000 at R.A. = 10h57m21s.78, Decl. = -03°25'23".0 Mag 22.7:3/22, Type Ia (z=0.46)
1998ba discovered 1998/03/22.000 at R.A. = 13h43m36s.92, Decl. = +02°19'30".6 Mag 22.3:3/22, Type Ia (z=0.43) (NERSC and HST image)
1998bb discovered 1998/03/22.000 at R.A. = 13h43m53s.58, Decl. = +01°25'33".7 Mag 24.0:3/22, Type Ia (z=0.57)
1998bc discovered 1998/03/22.000 at R.A. = 13h45m10s.14, Decl. = +02°23'52".4 Mag 22.1:3/22, Type Ia (z=0.40)
1998bd discovered 1998/03/22.000 at R.A. = 13h45m29s.05, Decl. = +01°57'32".5 Mag 21.2:3/22, Type Ia (z=0.25)
1998be discovered 1998/03/22.000 at R.A. = 13h46m20s.89, Decl. = +02°02'40".4 Mag 23.8:3/22, Type Ia (z=0.64)
1998bf discovered 1998/03/22.000 at R.A. = 13h46m31s.80, Decl. = +02°08'37".7 Mag 24.3:3/22, Type unknown
1998bg discovered 1998/03/22.000 at R.A. = 13h47m11s.74, Decl. = +02°07'22".4 Mag 20.9:3/22, Type unknown
1998bh discovered 1998/03/22.000 at R.A. = 13h47m36s.55, Decl. = +02°18'22".5 Mag 23.1:3/22, Type unknown
1998bi discovered 1998/03/22.000 at R.A. = 13h47m44s.72, Decl. = +02°20'57".2 Mag 23.7:3/22, Type Ia (z=0.75)
1998bj discovered 1998/03/22.000 at R.A. = 13h47m49s.63, Decl. = +01°59'47".8 Mag 23.4:3/22, Type unknown
1998bk discovered 1998/03/22.000 at R.A. = 13h48m48s.25, Decl. = +02°58'41".2 Mag 22.5:3/22, Type Ia (z=0.41)
1998bl discovered 1998/03/22.000 at R.A. = 13h49m36s.04, Decl. = +01°57'46".6 Mag 23.2:3/22, Type unknown

1998ar, IAUC 6877 discovered 1998/04/14 by BAO Supernova Survey
Found in NGC 2916 at R.A. = 09h34m58s.86, Decl. = +21°42'57".54
Located 16.9" east and 38.5" north of the center of NGC 2916 (Jim Wentworth image) (Diego Rodrigues image) (Ca' Bionda Observatory image)
Mag 18.4, Type II (z=0.0125) (References: IAUC 6880)

1998aq, IAUC 6875 discovered 1998/04/13 by Mark Armstrong
Found in NGC 3982 at R.A. = 11h56m25s.76, Decl. = +55°07'40".1 (Stefano Pesci detailed drawing) (AAVSO finder chart)
Located 18" west and 7" north of the center of NGC 3982
Mag 19.6 (12.0:4/18), Type Ia (CfA Spectrum) (CfA light curve) (References IAUC 6876, 6878, 6880, 6884, 6898, 6909, 6937, 6978, 7070, 7103)
SN 1998aq Images subpage

1998ap, IAUC 6873 discovered 1998/03/31.000 by Roberto Antezana
Found in an anonymous galaxy at R.A. = 20h00m35s.58, Decl. = -52°42'36".8
Located 16" west and 3" north of the center of the host galaxy
Mag 17.0:3/31, Type unknown

1998ao, IAUC 6873 discovered 1998/03/25.000 by Roberto Antezana
Found in an anonymous galaxy at R.A. = 10h07m14s.58, Decl. = -26°23'35".1
Located 10" east and 4" south of the center of the host galaxy
Mag 18.0:3/25, Type II (z=0.0156)

1998an, IAUC 6871 discovered 1998/04/06 by Ron Arbour
Found in UGC 3683 at R.A. = 07h08m17s.13, Decl. = +46°06'54".31
Located 32" east and 3" south of the center of UGC 3683 (Ron Arbour discovery image) (Mike Schwartz image) (Marko Moilanen Image) (Philip Sullivan image) (Ron Arbour image) (Larry Robinson image) (M1 SN 1998an page)
Mag 16.4, Type Ia (z=0.019) (References IAUC 6877, 6878, 6982)

1998ac - 1998am, IAUC 6861 discovered by High Z Supernova Search Team

1998ac discovered 1998/02/27.000 at R.A. = 09h31m20s.00, Decl. = -05°16'24".3 Mag 23.7:2/27, Type Ia (z=0.46)
1998ad discovered 1998/03/25.000 at R.A. = 09h29m55s.71, Decl. = -05°21'59".3 Mag 23.4:3/25, Type II? (z=0.44)
1998ae discovered 1998/03/25.000 at R.A. = 09h30m47s.53, Decl. = -04°38'51".0 Mag 23.9:3/25, Type unknown
1998af discovered 1998/03/25.000 at R.A. = 09h30m36s.98, Decl. = -05°04'51".1 Mag 23.7:3/25, Type II (z=0.23)
1998ag discovered 1998/03/25.000 at R.A. = 13h43m36s.42, Decl. = +00°08'02".2 Mag 23.5:3/25, Type Ia (z=0.67)
1998ah discovered 1998/03/26.000 at R.A. = 09h28m15s.74, Decl. = -05°21'57".9 Mag 22.6:3/26, Type Ia (z=0.43)
1998ai discovered 1998/03/26.000 at R.A. = 13h42m27s.59, Decl. = -00°06'47".2 Mag 22.7:3/26, Type Ia (z=0.49)
1998aj discovered 1998/03/26.000 at R.A. = 09h27m55s.76, Decl. = -04°59'56".9 Mag 24.1:3/26, Type Ia (z=0.83)
1998ak discovered 1998/03/26.000 at R.A. = 13h44m16s.22, Decl. = -00°10'49".3 Mag 23.7:3/26, Type Ia? (z=0.74)
1998al discovered 1998/03/26.000 at R.A. = 13h43m05s.37, Decl. = -00°25'43".0 Mag 23.4:3/26, Type Ia (z=0.71)
1998am discovered 1998/03/26.000 at R.A. = 13h41m21s.38, Decl. = -00°32'33".8 Mag 23.8:3/26, Type II (z=0.24)

1998ab, IAUC 6858 discovered 1998/04/01 by BAO Supernova Survey
Found in NGC 4704 at R.A. = 12h48m47s.24, Decl. = +41°55'28".31
Located 2" east and 12" north of the center of NGC 4704 (Marko Moilanen Image) (VSnet image) (Jim Wentworth Images) (Ca' Bionda Observatory image) (L. Kiss image)
Mag 17.3, Type Ia (CfA FLWO spectrum) (References IAUC 6891)

1998aa, IAUC 6850 discovered 1998/02/26.000 by Roberto Antezana
Found in an anonymous galaxy at R.A. = 12h25m32s.65, Decl. = +07°38'59".0
Located 10" west and 1" south of the center of the host galaxy
Mag 18.0:2/26, Type Ia

1998Z, IAUC 6850 discovered 1998/03/16.000 by Mount Stromlo Abell Cluster Supernova Search Team
Found in an anonymous galaxy at R.A. = 05h24m58s.78, Decl. = -31°21'38".1
Located 2" west and 2" south of the center of the host galaxy
Mag 19.6:3/16, Type Ia

1998Y, IAUC 6850 discovered 1998/03/16 by Lick Observatory Supernova Search
Found in NGC 2415 at R.A. = 07h36m56s.934, Decl. = +35°14'36".01
Located 7" east and 6" north of the center of NGC 2415 (Marko Moilanen Image) (KAIT Image)
Mag 18.3, Type II

1998X, IAUC 6847 discovered 1998/03/13 by Perth Astronomical Research Group
Found in NGC 6754 at R.A. = 19h11m23s.2, Decl. = -50°38'34".0 (exact coordinates not provided)
Located 23.8" west and 3.1" south of the center of NGC 6754 (Discovery image)
Mag 17, Type II (z=0.0104) (References: SN 1998dq, 2000do)

1998W, IAUC 6843 discovered 1998/03/16 by Lick Observatory Supernova Search
Found in NGC 3075 at R.A. = 09h58m54s.83, Decl. = +14°25'25".7
Located 20" west and 12" north of the center of NGC 3075 (Mike Schwartz image) (Colleen Gino Image) (Marko Moilanen Image) (KAIT Image) (Hubert Lehmann image) (Luis Hernandex and A. A. Tenerief image) (Ca' Bionda Observatory image) (Grasslands Observatory image)
Mag 17.3, Type II (z=0.0116) (References IAUC 6844, 6853)

1998V, IAUC 6841 discovered 1998/03/10 by Mark Armstrong
Found in NGC 6627 at R.A. = 18h22m37s.40, Decl. = +15°42'08".4
Located 21" west and 21" north of the center of NGC 6627 (Mark Armstrong image) (CfA SN Image) (Marko Moilanen image) (The Astronomer 1998V page) (Luis Hernandex and A. A. Tenerief image)
Mag 16.2, Type Ia (z=0.0176) (CfA SN Spectrum) (References IAUC 6844, 6891)

1998U, IAUC 6836 discovered 1998/03/03.000 by EROS at R.A. = 11h36m32s.20, Decl. = -12°07'26".7 Mag 20.0:3/3, Type unknown (offset 2W 4N)

1998T, IAUC 6830, discovered 1998/03/03 by BAO Supernova Survey
Found in NGC 3690 at R.A. = 11h28m33s.16, Decl. = +58°33'43".7
Located in NGC 3690 which has no clearly defined nucleus.
Mag 14.4 (13.9:3/5), Type Ib (References IAUC 6843, 6844, 6859; SN 2010P, 2010O, 2005U, 1999D, 1993G, 1992bu)
Please refer to the SN1998T subpage for reference images and information on the location of SN1998T in the IC 694/NGC 3690 complex.

1998S, IAUC 6829, discovered 1998/03/03 by BAO Supernova Survey
Found in NGC 3877 at R.A. = 11h46m06s.18, Decl. = +47°28'55".57 (Stefano Pesci detailed drawing)
Located 13.6" west and 46" south of the center of NGC 3877
Mag 18.0 (11.9:3/21), Type IIn (ISN Light curve) (CfA SN Spectrum) (References IAUC 6830, 6831, 6832, 6841, 6843, 6845, 6846, 6847, 6852, 6860, 6865, 6885, 6924, 6956, 7047, 7058, 7103, 7185, 7322, 7435)
SN 1998S Images subpage

1998R, IAUC 6826, discovered 1998/02/23 by CfA Supernova group
Found in UGC 6271 at R.A. = 11h14m37s.03, Decl. = +30°18'51".7
Located 3.1" west and 0.8" north of the center of UGC 6271 (Marko Moilanen Image) (Luis Hernandex and A. A. Tenerief image)
Mag 16.0:2/23, Type II (z=0.0668)

1998O - 1998Q IAUC 6820 discovered by Mount Stromlo Abell Cluster Supernova Search Team

1998O discovered 1998/01/27.000 at R.A. = 13h39m34s.98, Decl. = -35°46'32".5 Mag 20.9:1/27, Type unknown (1E 16N)
1998P discovered 1998/01/27.000 at R.A. = 13h37m17s.63, Decl. = -35°27'32".6 Mag 20.9:1/27, Type unknown (2E 2N)
1998Q discovered 1998/01/27.000 at R.A. = 13h32m46s.38, Decl. = -31°37'23".5 Mag 20.9:1/27, Type unknown (0E 2N)

1998F - 1998N IAUC 6819 discovered by High Z Supernova Search Team

1998F discovered 1998/01/23.000 at R.A. = 04h16m50s.13, Decl. = -05°44'59".6 Mag 24.5:1/23, Type unknown (z=0.52)
1998G discovered 1998/01/23.000 at R.A. = 08h03m37s.02, Decl. = +06°10'13".9 Mag 22.8:1/23, Type II? (z=0.30)
1998H discovered 1998/01/23.000 at R.A. = 08h04m51s.47, Decl. = +05°36'39".3 Mag 23.0:1/23, Type unknown (z=0.66)
1998I discovered 1998/01/23.000 at R.A. = 08h04m51s.56, Decl. = +05°15'47".7 Mag 23.6:1/23, Type Ia (z=0.89)
1998J discovered 1998/01/23.000 at R.A. = 09h31m10s.48, Decl. = -04°45'36".5 Mag 22.5:1/23, Type Ia (z=0.83)
1998K discovered 1998/01/24.000 at R.A. = 04h13m42s.86, Decl. = -05°50'45".2 Mag 23.8:1/24, Type unknown
1998L discovered 1998/01/24.000 at R.A. = 11h33m36s.63, Decl. = +04°35'04".6 Mag 23.6:1/24, Type II?
1998M discovered 1998/01/24.000 at R.A. = 11h33m44s.37, Decl. = +04°05'13".4 Mag 23.3:1/24, Type Ia (z=0.63)
1998N discovered 1998/01/24.000 at R.A. = 11h33m29s.39, Decl. = +03°51'02".3 Mag 23.1:1/24, Type unknown (z=0.26)

1998E, IAUC 6817, discovered 1998/01/29 by Perth Astronomical Research Group
Found in NGC 5161 at R.A. = 13h29m02s, Decl. = +33°10'00" (Exact position not given)
Located 3" east and 8" south of the center of NGC 5161 (Discovery image)
Mag 16.5, Type IIn

1998D, IAUC 6815, discovered 1998/01/28 by BAO Supernova Survey
Found in NGC 5440 at R.A. = 14h02m59s.28, Decl. = +34°44'54".37
Located 26".1 west and 7".4 south of the center of NGC 5440 (Mike Schwartz image) (D.Buczynski image) (Josep MЄ Bosch image) (Ca' Bionda Observatory image)
Mag 15.6, Type Ia (References IAUC 6823)

1998C, IAUC 6812, discovered 1998/01/21 by BAO Supernova Survey
Found in UGC 3825 at R.A. = 07h23m34s.638, Decl. = +41°26'04".2
Located 15".5 east and 0".5 south of the center of UGC 3825 (Visseggi Observatory image) (KAIT Image)
Mag 17.9, Type II (z=0.0286) (References: IAUC 6823; SN 2004es)

1998B, IAUC 6809 discovered 1998/01/01.000 by Jean Mueller
Found in an anonymous galaxy at R.A. = 07h46m02s.10, Decl. = +18°43'02".0
Located 7" west and 2" south of the center of the host galaxy
Mag 18.5:1/1, Type Ia (z=0.045)

1998A, IAUC 6805, discovered 1998/01/06 by Perth Astronomical Research Group
Found in IC 2627 at R.A. = 11h09m50s.33, Decl. = -23°43'43".1
Located 40" west and 10" south of the center of IC 2627 (Discovery image)
Mag 17.0:1/6, Type II (References IAUC 6809, 6823, 6849, 7435; SN 1994R, 1989G)

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David Bishop

Last modified: Thu 10/23 12:50:09 EDT 2003