HD 50554

from Wikipedia, the free encyclopedia
Stern
HD 50554
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation Twins
Right ascension 06 h 54 m 42.83 s
declination + 24 ° 14 ′ 44 ″
Apparent brightness 6.84 likes
Typing
Known exoplanets 1
B − V color index +0.53 
Spectral class F8
Astrometry
Radial velocity (−4.0 ± 0.1) km / s
parallax (33.43 ± 0.59)  mas
distance (97.6 ± 1.7)  ly
(29.9 ± 0.5)  pc  
Visual absolute brightness M vis +4.5 mag
Proper movement 
Rec. Share: (−37.58 ± 0.71)  mas / a
Dec. portion: (−95.54 ± 0.47)  mas / a
Physical Properties
radius (1.11 ± 0.33)  R ☉
Effective temperature 5900  K
Metallicity [Fe / H] −0.07
Age approx. 5 billion  a
Other names
and catalog entries
Bonn survey BD + 24 ° 1451
Henry Draper Catalog HD 50554 [1]
Hipparcos catalog HIP 33212 [2]
SAO catalog SAO 78855 [3]
Tycho catalog TYC 1894-1961-1 [4]Template: Infobox star / maintenance / specification of the TYC catalog

HD 50554 is a sun-like star in the constellation Gemini, about 98 light-years away from Earth, with an apparent magnitude of about 6.8 mag. In 2002 Vogt et al. Using the radial velocity method, an exoplanet candidate orbiting this star with a period of 1224  days . The object with the systematic designation HD 50554 b has a minimum mass of around 5 Jupiter's masses. The semi-major axis of the orbit measures approx. 2.3  astronomical units , its eccentricity 0.44.

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)
  4. ↑ estimated based on the apparent brightness and distance