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HD 75620


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Intermediate-Brightness Equatorial Spectrophotometric Standards
We have obtained spectral energy distributions for 41 7m 8m stars nearthe celestial equator (δ=±3°). The λλ31007600 Å spectral range is studied with a spectral resolution of 50Å. The relative rms error in the visible is 1 2%, increasing to 35% towards the edges of the wavelength interval studied. All stars arereferenced to a single standard, the circumpolar star HD 221525. Thesynthetic colors of common stars are compared with those observed infour photometric systems: U BV, W BV R, uvby, and that of the TYCHOcatalog. The program stars are recommended as secondaryspectrophotometric standards.

Lichtelektrische UBV-Photometrie von Standardsternen und in vier Sternfeldern am Äquator
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Catalogue de 240 couples visuels d'étoiles naines rouges
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Observation and Astrometry data

Constellation:Ύδρα
Right ascension:08h51m04.22s
Declination:+00°28'10.9"
Apparent magnitude:7.981
Distance:156.986 parsecs
Proper motion RA:-27.3
Proper motion Dec:-2.9
B-T magnitude:8.108
V-T magnitude:7.992

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 75620
TYCHO-2 2000TYC 212-293-1
USNO-A2.0USNO-A2 0900-06179733
HIPHIP 43456
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