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HD 221900


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Photometry of stars in the uvgr system
Photoelectric photometry is presented for over 400 stars using the uvgrsystem of Thuan and Gunn. Stars were selected to cover a wide range ofspectral type, luminosity class, and metallicity. A mean main sequenceis derived along with reddening curves and approximate transformationsto the UBVR system. The calibration of the standard-star sequence issignificantly improved.

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Observation and Astrometry data

Constellation:Κασσιόπη
Right ascension:23h35m36.36s
Declination:+61°22'06.4"
Apparent magnitude:8.766
Distance:174.52 parsecs
Proper motion RA:29.7
Proper motion Dec:-13.4
B-T magnitude:9.245
V-T magnitude:8.806

Catalogs and designations:
Proper Names
HD 1989HD 221900
TYCHO-2 2000TYC 4280-383-1
USNO-A2.0USNO-A2 1500-09877082
HIPHIP 116432
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