HD 50554
Stern HD 50554 |
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AladinLite | |||||||||||
Observation dates equinox : J2000.0 , epoch : J2000.0 |
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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 |
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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 |
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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
- ↑ a b c Hipparcos catalog (ESA 1997)
- ↑ Pulkovo radial velocities for 35493 HIP stars
- ↑ a b c Hipparcos, the New Reduction (van Leeuwen, 2007)
- ↑ estimated based on the apparent brightness and distance