1016 I/16 Catalog of 3356 Faint Stars, 1950 J Larink A Bohrmann H Kox J Groeneveld H Klauder Verlag der Sternwarte, Hamburg-Bergedorf ??? ??? 1955 1955 Fundamental catalog Positional data Proper motions 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.

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.

ID Catalog number --- DMz BD zone --- DMn BD number --- mag Photographic magnitude mag Sp Spectral class --- RAh Right Ascension hours (1950) h RAm Right Ascension minutes (1950) min RAs Right Ascension seconds (1950) s Pr-RA1 First order precession in RA per century 0.01s/a Pr-RA2 Second order precession in RA per century 0.0001s2/a2 pmRA Proper motion in RA from AGK2 positions 0.01s/a pmRA2 Proper motion in RA from Kuestner positions 0.01s/a DE- Sign of declination (1950) --- DEd Declination degrees (1950) deg DEm Declination minutes (1950) arcmin DEs Declination seconds (1950) arcsec Pr-de1 First order precession in dec per century arcsec/ha Pr-de2 Second order precession in dec per century arcsec2/ha2 pmdec Proper motion in DE from AGK2 positions arcsec/ha pmdec2 Proper motion in DE from Kuestner positions arcsec/ha epoch Epoch of observation - 1900.0 yr rem Note for star in printed catalog 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. --- Nancy Grace Roman ADC/SSDOO 1996Feb01 I_16.xml