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HD 121254


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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:Zirkel
Right ascension:13h57m17.41s
Declination:-70°07'06.0"
Apparent magnitude:9.435
Proper motion RA:-20.1
Proper motion Dec:-6
B-T magnitude:10.134
V-T magnitude:9.493

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 121254
TYCHO-2 2000TYC 9247-348-1
USNO-A2.0USNO-A2 0150-12562855
HIPHIP 68163
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