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HD 79078


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Photometry of astrometric reference stars
UBVRI, DDO, and uvby, H-beta photometry of astrometric reference starsis presented. Spectral types and luminosity classifications made fromthe colors are used to determine their spectroscopic parallaxes. In thispaper, colors for 309 stars in 25 regions are given, and classificationsfor 210 stars have been made. These stars form reference frames in theAllegheny Observatory Multichannel Astrometric Photometer astrometricprogram, and in the Praesepe cluster reduced by Russell (1976). It isfound that the present photometric spectral types are reliable to within2.5 spectral subclasses.

Photoelectric observations of lunar occultations. XII
Occultation observations of 414 events observed between 6 July 1979 and4 September 1980 with the 0.76-m telescope of McDonald Observatory arereported. Timings and data on double stars are given. Angular diameterinformation in six cases is included. The stars concerned with their runnumbers are: SAO 161754 (5270); 94027 (Alpha Tau) (5319, 5381, 5454);159370 (Gamma Lib) (5325, 5571); 162413 (43 Sgr) (5332); 97472 (3 Cnc)(5414); and 93955 (Theta Tau) (5445).

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Observation and Astrometry data

Constellation:Cancer
Right ascension:09h12m24.07s
Declination:+14°43'40.3"
Apparent magnitude:9.412
Proper motion RA:0.7
Proper motion Dec:-14.5
B-T magnitude:10.173
V-T magnitude:9.475

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 79078
TYCHO-2 2000TYC 825-274-1
USNO-A2.0USNO-A2 0975-06180435

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