J/A+AS/115/97 J/A+AS/115/97 Positions of 790 AGNs M -P Veron-Cetty P Veron Astron. Astrophys. Suppl. Ser. 115 97 1996 1996A&AS..115...97V Active gal. nuclei QSOs astrometry galaxies: active quasars: general From the measurement on the Digitized Sky Survey of the optical position of 153 QSOs with an accurate VLBI position, we have determined that the r.m.s. uncertainties of these measurements is about 0.6 arcsec in both coordinates over the whole sky, except for objects located near the edge of the plates. We have measured the optical position of 790 AGNs (or AGNs candidates). For many of these objects, the accuracy of the published optical position was one arcminute or worst.

Name Name of the source --- RAh Right Ascension J2000 (hours) (optical) h RAm Right Ascension J2000 (minutes) min RAs Right Ascension J2000 (seconds) s DE- Declination J2000 (sign) --- DEd Declination J2000 (degrees) deg DEm Declination J2000 (minutes) arcmin DEs Declination J2000 (seconds) arcsec dRA optical - radio right ascension arcsec dDE optical - radio declination arcsec Xpos Rectangular coordinate toward East measured from the centre of the plate cm Ypos Rectangular coordinate toward North measured from the centre of the plate cm Name Name of the source --- RAh1950 Right Ascension B1950 (hours) h RAm1950 Right Ascension B1950 (minutes) min RAs1950 Right Ascension B1950 (seconds) s DE-1950 Declination B1950 (sign) --- DEd1950 Declination B1950 (degrees) deg DEm1950 Declination B1950 (minutes) arcmin DEs1950 Declination B1950 (seconds) arcsec RAh Right Ascension J2000 (hours) h RAm Right Ascension J2000 (minutes) min RAs Right Ascension J2000 (seconds) s DE- Declination J2000 (sign) --- DEd Declination J2000 (degrees) deg DEm Declination J2000 (minutes) arcmin DEs Declination J2000 (seconds) arcsec Xpos Rectangular coordinate toward East measured from the centre of the plate cm Ypos Rectangular coordinate toward North measured from the centre of the plate cm FC Reference for the finding chart (see file "refs") --- Note Remarks number=1 C indicates that the position has been measured with the cursor rather than with a Gaussian fitting routine. * indicates that the object is located near the edge of the plate ( |X| or |Y| > 14.7 cm ) 1 double sep. 3" 2 weak object at 5.0" N 3 extended 4 double sep. 4" 5 double object 6 weak object at 3.8" 7 object at 6.0" N 8 weak object at 3.5" NW --- FC Reference as in table2, blank for continuation --- Text Text of reference --- Francois Ochsenbein CDS 1995Jul13Mira Veron <mira@obshpx.obs-hp.fr> J_A+AS_115_97.xml