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HD 74883


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Open clusters with Hipparcos. I. Mean astrometric parameters
New memberships, mean parallaxes and proper motions of all 9 openclusters closer than 300 pc (except the Hyades) and 9rich clusters between 300 and 500 pc have been computed using Hipparcosdata. Precisions, ranging from 0.2 to 0.5 mas for parallaxes and 0.1 to0.5 mas/yr for proper motions, are of great interest for calibratingphotometric parallaxes as well as for kinematical studies. Carefulinvestigations of possible biases have been performed and no evidence ofsignificant systematic errors on the mean cluster parallaxes has beenfound. The distances and proper motions of 32 more distant clusters,which may be used statistically, are also indicated. Based onobservations made with the ESA Hipparcos astrometry satellite

Relative radial velocities from objective prism spectra in the region of nine southern open star clusters and a star field at Eta Carinae
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1980A&AS...41..245G&db_key=AST

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Observation and Astrometry data

Constellation:ほ座
Right ascension:08h45m10.32s
Declination:-41°25'38.0"
Apparent magnitude:8.751
Distance:581.395 parsecs
Proper motion RA:-13
Proper motion Dec:6.7
B-T magnitude:8.699
V-T magnitude:8.747

Catalogs and designations:
Proper Names
HD 1989HD 74883
TYCHO-2 2000TYC 7683-1298-1
USNO-A2.0USNO-A2 0450-07452798
HIPHIP 42939

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