I/16 Catalog of 3356 Faint Stars, 1950 (Larink+ 1955)
Katalog von 3356 Schwachen Sternen fuer das Aequinoktium 1950
Larink J., Bohrmann A., Kox H., Groeneveld J., Klauder H.
<Verlag der Sternwarte, Hamburg-Bergedorf (1955)>
ADC_Keywords: Fundamental catalog; Positional data; Proper motions
Description:
This catalog of 3356 faint stars was derived from meridian circle
observations at the Bergedorf and Heidelberg Observatories. The
positions are given for the equinox 1950 on the FK3 system. The stars
are mainly between 8.0 and 10.0 visual magnitude. A few are brighter
than 8.0 mag. The lower limit in brightness resulted from the
visibility of the stars.
Introduction:
All stars were observed at both the Heidelberg and Bergedorf
Observatories. Normally, at each observatory, two observations were
obtained with the clamp east and two with the clamp west. The mean
errors are comparable for the two observatories with no significant
systematic difference in the positions between them. The mean errors
of the resulting positions should be approximated 0.011s/cos(dec) in
right ascension and ).023" in declination.
The proper motions were derived from a comparison with the catalog
positions with the positions in the AGK2 and AGK2A with a 19 year
baseline and from a comparison of new positions with those in Kuestner
1900 with about a fifty year baseline.
The magnitudes were taken from the AGK2. Most spectral types were
determined by A. N. Vyssotsky. A few are from the Bergedorfer
Spektraldurchmusterung.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 88 3356 The catalog
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Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- ID Catalog number
5- 11 A7 --- DM BD identification
13- 16 F4.1 mag mag Photographic magnitude
18- 20 A3 --- Sp Spectral class
21- 22 I2 h RAh Right Ascension hours (1950)
23- 24 I2 min RAm Right Ascension minutes (1950)
25- 29 F5.2 s RAs Right Ascension seconds (1950)
30- 37 F8.2 0.01s/a prRA1 First order precession in RA per century
38- 45 F8.2 0.0001s2/a2 prRA2 Second order precession in RA per century
46- 50 F5.1 0.01s/a pmRA ?Proper motion in RA from AGK2 positions
51- 54 F4.1 0.01s/a pmRA2 ?Proper motion in RA from Kuestner positions
55 A1 --- DE- Sign of declination (1950)
56- 57 I2 deg DEd Declination degrees (1950)
58- 59 I2 arcmin DEm Declination minutes (1950)
60- 63 F4.1 arcsec DEs Declination seconds (1950)
64- 70 F7.1 arcsec/ha prDE1 First order precession in dec per century
71- 76 F6.1 arcsec2/ha2 prDE2 Second order precession in dec per century
77- 79 I3 arcsec/ha pmDE Proper motion in DE from AGK2 positions
80- 82 I3 arcsec/ha pmDE2 ?Proper motion in DE from Kuestner positions
84- 87 F4.1 yr Ep-1900 Epoch of observation - 1900.0
88 A1 --- rem *Note for star in printed catalog
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Note on rem:
1 = ma (blend?)
3 = pr (preceding)
4 = seq (following)
5 = bor (northern)
6 = au (southern)
* = other note in printed volume (All notes in the printed volume have not
been indicated in this version.)
the printed volume sometimes has additional information on the systems with
numerical remarks.
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(End) Nancy Grace Roman [ADC/SSDOO] 01-Feb-1996