HD 283750

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Star
HD 283750
AladinLite
Observation
dates equinoxJ2000.0 , epoch : J2000.0
Constellation bull
Right ascension 04 h 36 m 48.24 s
declination + 27 ° 07 ′ 55.9 ″
Apparent brightness 8.1 likes
Typing
Spectral class K2
Variable star type BY-Draconis mutable 
Astrometry
Radial velocity (35.2 ± 2.5) km / s
parallax (55.66 ± 1.43)  mas
distance (58.6 ± 1.5)  ly
(18.0 ± 0.5)  pc  
Visual absolute brightness M vis +6.8 mag
Proper movement 
Rec. Share: (+233.65 ± 1.63)  mas / a
Dec. portion: (−146.61 ± 1.19)  mas / a
Physical Properties
radius approx. 0.6  R
Effective temperature 4900  K
Other names
and catalog entries
Bonn survey BD + 26 ° 730
Henry Draper Catalog HD 283750 [1]
Hipparcos catalog HIP 21482 [2]
SAO catalog SAO 76672 [3]
Tycho catalog TYC 1838-564-1 [4]Template: Infobox star / maintenance / specification of the TYC catalog
Other names V833 Tauri
annotation
  1. ↑ Estimated from apparent brightness and distance.

HD 283750 is a late main sequence star in the constellation Taurus, almost 60 light years away from Earth . With an apparent brightness of 8.1 mag, it can no longer be seen with the naked eye, even under optimal observation conditions. HD 283750 is classified as a BY Draconis variable and has the variable designation V833 Tauri . Together with the white dwarf WD 0433 + 27, it forms a pair of independent movements and is possibly a member of the Hyades or the Hyades Current .

Spectroscopic companion

In 1996 Michel Mayor et al. a spectroscopic companion with a minimum mass of 50 Jupiter masses that orbits this star with a period of 1.8 days. This object is believed to be a low mass star, but it could also be a brown dwarf .

Web links

Individual evidence

  1. a b c Hipparcos catalog (ESA 1997)
  2. Pulkovo radial velocities for 35493 HIP stars
  3. a b c Hipparcos, the New Reduction (van Leeuwen, 2007)