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I/193 Positions and Proper Motions - South (Bastian+ 1993)
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Catalogue of Positions and Proper Motions - South
Bastian U., Roeser S.
=1993pscs.book.....R
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ADC_Keywords: Positional data; Proper motions
Description:
PPM South gives positions and proper motions of 197179
stars south of about -2.5 degrees declination. Its main purpose
is to provide a convenient, dense and accurate net of astrometric
reference stars on the southern celestial hemisphere. This net is
designed to represent as closely as possible the new IAU (1976)
coordinate system on the sky, as defined by the FK5 star
catalogue (Fricke et al., 1988). In other words, it is a
representation of this system at higher star densities and
fainter magnitudes. PPM South is the southern-hemisphere
complement to the PPM Star Catalogue (Roeser and Bastian, 1991),
which covers the northern hemisphere, plus a strip between the
equator and about -2.5 degrees declination. At the border line a
continuous transition between the northern and southern part was
tailored in such a way that no overlap, nor gaps, nor double
entries occurred.
The PPM South consists of three files: a descriptive document
supplied by the authors for more detail regarding the scope,
construction, properties, and usage of PPM South; the data file for
the PPM South itself; and a version of PPM South for equinox and epoch
B1950.0, FK4 system, in the format of the preliminary PPM North
(Roeser and Bastian, 1991: Astronomisches Rechen-Institut, Heidelberg,
Vols. I and II, printed by Spektrum Akademischer Verlag, Heidelberg).
See the author-supplied documentation for more complete information.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
descrip.doc 80 984 Authors' description
ppmsouth.dat 131 197179 Positions and Proper Motions - South
ppmsofmt.dat 138 197179 PPM South - in format of old PPM North
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Byte-by-byte Description of file: ppmsouth.dat
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Bytes Format Units Label Explanations
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2- 7 I6 --- PPM *Designation of the star
10- 18 A9 --- DM *BD (zones -02 to -22), else CD
20- 23 F4.1 mag mag *Magnitude
25- 26 A2 --- Sp *Spectral type
28- 29 I2 h RAh Right Ascension J2000 (hours)
31- 32 I2 min RAm Right Ascension J2000 (minutes)
34- 39 F6.3 s RAs Right Ascension J2000 (seconds)
42 A1 --- DE- Declination J2000 (sign)
43- 44 I2 deg DEd Declination J2000 (degrees)
46- 47 I2 arcmin DEm Declination J2000 (minutes)
49- 53 F5.2 arcsec DEs Declination J2000 (seconds)
56- 62 F7.4 s/yr pmRA *Proper motion in RA, J2000
64- 69 F6.3 arcsec/yr pmDE *Proper motion in DE, J2000
71- 72 I2 --- N *Number of individual published positions used
74- 75 I2 10mas e_RA *Mean error of RA
77- 78 I2 10mas e_DE *Mean error of DE
80- 83 F4.1 mas/yr e_pmRA *Mean error of pmRA
85- 88 F4.1 mas/yr e_pmDE *Mean error of pmDE
90- 94 F5.2 yr EpRA *Weighted mean epoch, RA and pmRA
96-100 F5.2 yr EpDE *Weighted mean epoch, DE and pmDE
102-107 I6 --- SAO [1/258997]? SAO Designation
109-114 I6 --- HD [1/359000]? Henry Draper Designation
117-125 A9 --- CPD Cape Photographic Durchmusterung Designation
127 A1 --- Flag1 *'P' - problem, 'C' - comment
128 A1 --- Flag2 *'D' - double star
129 A1 --- Flag3 * - not used
130 A1 --- Flag4 *'F' - member of FK5
131 A1 --- Flag5 *'R' - remark, 'V' - V mag (CPC-2)
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Note on PPM:
Designation of the star in PPM South starting with No. 181732,
see chapter 3 of the author's description file.
Note on DM:
Designation of the star in the Bonner Durchmusterung (for zones from
-02 to -22 degrees) or in the Cordoba Durchmusterung (zones -23 to
-89 degrees).
Note on mag and Sp:
See chapter 3 of description file.
Note on pmRA and pmDE:
Proper motion in right ascension fro epoch and equinox J2000.0,
on the system of FK5 given in seconds of time per Julian year.
Note on N:
Number of individual published positions used for the
derivation of the position and proper motion given.
Note on e_RA:
Mean error of right ascension at the mean epoch of right ascension,
multiplied by the cosine of declination, given in units of #0.01
seconds of arc.
Note on e_DE:
Mean error of declination at the mean epoch of declination, given in
units of #0.01 seconds of arc.
Note on e_pmRA:
Mean error of the proper motion in right ascension, multiplied by
the cosine of declination, given in units of 0.001 seconds of arc
per Julian year.
Note on e_pmDE:
mean error of the proper motion in declination given in units of
0.001 seconds of arc per Julian year
Note on EpRA:
Weighted mean epoch of the measured positions used for the
derivation of RA and pmRA, given in years since 1900.0.
Note on EpDE:
Weighted mean epoch of the measured positions used for the
derivation of DE and pmDE, given in years since 1900.0.
Note on Flag1:
P - problem case, preferably not to be used as astrometric
reference star.
C - a critical comment is given in the List of Critical Comments.
Not to be used as astrometric reference star.
Note on Flag2:
D - double star, preferably not to be used as astrometric
reference star.
Note on Flag3:
Not used, void for consistency with PPM (north).
Note on Flag4:
F - member of FK5, mostly bright stars, original FK5 data
are given.
Note on Flag5:
R - a remark is given in the List of Remarks on Individual
Stars.
V - the magnitude is a photographic V magnitude copied from
CPC-2.
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Byte-by-byte Description of file: ppmsofmt.dat
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Bytes Format Units Label Explanations
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2- 4 A3 --- cat Characters 'PPM'
5- 10 I6 --- PPM Designation of the star
11- 16 F6.1 mag mag Magnitude
19- 20 A2 --- Sp Spectral type
22 A1 --- Flag1 *Problem flag
24- 38 D15.8 rad RA1950 RA equinox and epoch B1950, FK4
40- 54 D15.8 rad DE1950 DE equinox and epoch B1950, FK4
56- 67 D12.5 0.01rad/yr pmRA1950 Proper motion in RA, B1950, FK4
69- 80 D12.5 0.01rad/yr pmDE1950 Proper motion in DE, B1950, FK4
82- 96 D15.8 rad RA RA equinox and epoch J2000, FK5
98-112 D15.8 rad DE DE equinox and epoch J2000, FK5
114-125 D12.5 0.01rad/yr pmRA Proper motion in RA, J2000, FK5
127-138 D12.5 0.01rad/yr pmDE Proper motion in DE, J2000, FK5
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Note on Flag1:
P - problem case, preferably not to be used as astrometric
reference star.
C - a critical comment is given in the List of Critical Comments.
Not to be used as astrometric reference star.
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References:
Fricke, W., Schwan, H., Lederle, T. (1988): Fifth Fundamental
Catalogue (FK5). Part I. The Basic Fundamental Stars.
Veroeff. Astron. Rechen-Institut Heidelberg Nr.32.
IAU (1976): IAU Transaction XVI B, Reidel Publ., Dordrecht 1977.
Roeser, S., Bastian, U. (1991): PPM Star Catalogue, Astronomisches
Rechen-Institut, Heidelberg, Vols. I and II, printed
by Spektrum Akademischer Verlag, Heidelberg
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(End) Lee E. Brotzman [Hughes STX] and Gail L. Schneider [NSSDC/ADC] 14-Nov-1994