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HD 167991


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The calibration of the Stromgren photometric system for A, F and early G supergiants. I - The observational data
An empirical calibration of the Stromgren uvby-beta photometric systemfor the A, F, and early G supergiants is being derived. This paperexplains the observational program and the photometric reductiontechniques used and presents a catalog of new Stromgren photometry forover 600 A, F, and G supergiants.

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Observation and Astrometry data

Constellation:Pavo
Right ascension:18h22m05.94s
Declination:-63°22'53.7"
Apparent magnitude:7.341
Distance:401.606 parsecs
Proper motion RA:2.2
Proper motion Dec:10.5
B-T magnitude:8.475
V-T magnitude:7.435

Catalogs and designations:
Proper Names
HD 1989HD 167991
TYCHO-2 2000TYC 9072-2949-1
USNO-A2.0USNO-A2 0225-29100704
HIPHIP 90018
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