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HD 41666


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Interstellar reddening in the Southern Hemisphere. I - The UVBY beta observations
The uvby-beta photometric data obtained from a Southern Hemisphereobservational project is presented. A uvby-beta photometric network ofnearly 3900 A and early F stars has been established with the intentthat the stars serve as 'space probes' for measurements of interstellarreddening.

Visual multiples. VII - MK classifications
Classifications are given for 865 components of visual multiples; theyshow no systematic differences from the MK system, and the random errorsare one subclass in type and two-thirds of a luminosity class. It isfound that at least 1% of the F-type IV and V stars are weak-lined, 32%of the A4-F1 IV and V stars are Am, and 5% of the A0-A3 IV and V starsare early-type Am. Attention is called to the large fraction (55%) ofthe A3-A9 III-V stars that are of luminosity classes III or IV, unlikethe percentage (16%) at neighboring types.

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Observation and Astrometry data

Constellation:Λαγωός
Right ascension:06h05m55.68s
Declination:-13°14'52.0"
Apparent magnitude:7.194
Distance:144.509 parsecs
Proper motion RA:3.1
Proper motion Dec:1.7
B-T magnitude:7.515
V-T magnitude:7.221

Catalogs and designations:
Proper Names
HD 1989HD 41666
TYCHO-2 2000TYC 5361-1754-1
USNO-A2.0USNO-A2 0750-01797152
HIPHIP 28886

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