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HD 4997


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GPM1 - a catalog of absolute proper motions of stars with respect to galaxies
The description of the first version of the General Compiled Catalogueof Absolute Proper Motions (GPM1) for a sample of HIPPARCOS stars,derived with respect to galaxies within the plan called Catalogue ofFaint Stars (KSZ, Deutch 1952), is presented. The principal aim of theGPM1 construction was to provide absolute proper motions of stars todetermine the rotation of the HIPPARCOS system. The GPM1 cataloguecontains 977 HIPPARCOS Input Catalogue stars with V magnitudes $5^m -11^m in 180 fields north of -25 degrees of declination. The accuracy ofthe proper motions is 8 mas/yr (milliarcseconds per year). Comparison ofproper motions of GPM1 with those of the PPM and ACRS was performed andanalyzed with respect to systematic errors caused by spurious rotationof the FK5 system. The standard errors show that the rotation may bedetermined with an accuracy better than 1 mas/yr. Catalog is onlyavailable in electronic form at the CDS via anonymous ftpcdsarc.u-strasbg.fr or ftp 130.79.128.5.

GPM - compiled catalogue of absolute proper motions of stars in selected areas of sky with galaxies.
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Photometric survey near the main Galactic meridian: 2.1. Finding charts and photoelectric U,B,V,R stellar magnitudes in 25 fields
Finding charts and photoelectric U,B,V,R magnitudes of stars in 25fields in the Main Galactic Meridian (programme MEGA) are presented.This part of the photometric survey includes fields near the NorthGalactic pole and fields at southern Galactic latitudes. Together withthe finding charts of 2.5(deg) x2.5(deg) the equatorial coordinates ofthe stars are given for epoch and equinox 1950.

Photometric Survey Near the Main Galactic Meridian - Part One - Photoelectric Stellar Magnitudes and Colours in the UBVR System
Not Available

Photoelectric Vilnius Photometry of Stars in the MEGA Proper-Motion Fields 159 161 and 205 - Part One - Catalog of Observations
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观测天体数据

星座:鯨魚座
右阿森松:00h51m54.78s
赤纬:-07°07'30.0"
视星:8.948
距离:10000000 天文距离
右阿森松适当运动:7.7
赤纬适当运动:-6.9
B-T magnitude:10.999
V-T magnitude:9.118

目录:
适当名称
HD 1989HD 4997
TYCHO-2 2000TYC 4680-50-1
USNO-A2.0USNO-A2 0825-00196317
HIPHIP 4054
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