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HD 109938


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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:Musca
Right ascension:12h39m25.55s
Declination:-65°42'36.9"
Apparent magnitude:8.618
Distance:338.983 parsecs
Proper motion RA:-5.1
Proper motion Dec:-1.5
B-T magnitude:9.277
V-T magnitude:8.673

Catalogs and designations:
Proper Names
HD 1989HD 109938
TYCHO-2 2000TYC 9000-54-1
USNO-A2.0USNO-A2 0225-14961202
HIPHIP 61758
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