Hoag's Object ============= hoag_aligned_avg_bsdf.fits A sum of 7 100-second exposures in g' with the RC24 telescope Constellation: Serpens Caput Right ascension: 15h 17m 14.4s Declination: +2 3 08 Redshift: 12,740 +/- 50 km/s Distance: 600 +/- 30 Mly (183 +/- 8 Mpc) Type: SA0(r) Apparent dimensions: (V) 0.28' x 0.28' Apparent magnitude: (V) 16.0 Notable features: Ring galaxy AKA: PGC 54559,[1] PRC D-51[1] Observer: Karen Collins Processing: John Kielkopf

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. Comment on J1842+7946 . Comparing the brightnesses of the two main features seen in our 5 GHz image with higher frequency VLBI images available in the literature (at 8.4 GHz from the USNO database and at 15 GHz by Kellermann et al. (1998)), one can conclude that the NW component has a steeper spectrum since the SE one becomes relatively stronger as the observing frequency increases. VLBApls home page . Last modified: 16 Oct 2000

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... MASTER Net is 56 square degrees per 1 exposition . ... 06 Dec 2015: GRB 151205B: MASTER-NET early optical observations GCN18665 . ... 18 Nov 2015: GRB 151118A: MASTER-NET optical observations GCN18613 . ... 12 Nov 2015: GRB 151112A: MASTER-NET optical limit GCN18591 . ... 07 Nov 2015: GRB 151107A: MASTER-NET optical observations GCN18565 . ... 31 Oct 2015: Five OTs detected by Global Robotic MASTER Net ATel8232 . ... 02 Oct 2015: GRB 151001B: MASTER-NET early optical observations GCN18380 . ...

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GCVS Variability Types and Distribution Statistics of Designated Variable Stars According to their Types of Variability ======================================================================== I. GCVS Variability Types. ... Amplitudes usually do not exceed 0.1 mag. ... RR Variables of the RR Lyrae type, which are radially-pulsating giant A-F stars having amplitudes from 0.2 to 2 mag in V. Cases of variable light-curve shapes as well as variable periods are known. ... RV Variables of the RV Tauri type. ...

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99. Science Innovations