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HD 76273


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Spectral Classification of Stars in A Supplement to the Bright Star Catalogue
MK spectral types are given for about 584 stars in A Supplement to theBright Star Catalogue. These are compared with Hipparcos parallaxes tocheck the reliability of those classifications. The estimated errors are+/-1.2 subtypes, and 10% of the luminosity classes may be wrong.

Final catalogue of 229 photometric standards in UBV system near the selected areas 1-115
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Photoelectric filter photometry of the flux depression at 5200 A in Ap-stars
A new photometric index was used to characterize the flux depression at5200 A in a photoelectric filter photometric study of a large number ofnormal A-stars, Ap-stars, Am-stars, and Hg-Mn-stars. The new index isdefined as a = g - (h + y)/2, where g and h are the brightnesses at 5240and 5020 A, respectively, measured by interference filters, and y is thebrightness measured with a Stromgren filter. The index reveals a markedcontrast between normal and peculiar stars.

The corrected magnitudes and colours of 278 stars near S.A. 1-139 in the UBV system
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Observation and Astrometry data

Constellation:Ύδρα
Right ascension:08h54m58.38s
Declination:-03°33'20.1"
Apparent magnitude:6.981
Distance:120.773 parsecs
Proper motion RA:-3.6
Proper motion Dec:17.7
B-T magnitude:7.22
V-T magnitude:7.001

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 76273
TYCHO-2 2000TYC 4869-1686-1
USNO-A2.0USNO-A2 0825-06626455
HIPHIP 43774
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