HD 4203
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Star HD 4203 |
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| AladinLite | |||||||||||||
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Observation dates equinox : J2000.0 , epoch : J2000.0 |
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| Constellation | fishes | ||||||||||||
| Right ascension | 00 h 44 m 41.2 s | ||||||||||||
| declination | + 20 ° 26 ′ 56.1 ″ | ||||||||||||
| Apparent brightness | 8.7 likes | ||||||||||||
| Typing | |||||||||||||
| Known exoplanets | 1 | ||||||||||||
| Spectral class | G5 | ||||||||||||
| Astrometry | |||||||||||||
| Radial velocity | (−14.2 ± 0.2) km / s | ||||||||||||
| parallax | (12.95 ± 1.03) mas | ||||||||||||
| distance | (252 ± 20) ly (77.2 ± 6.1) pc |
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| Visual absolute brightness M vis | +4.3 mag | ||||||||||||
| Proper movement | |||||||||||||
| Rec. Share: | (+122.97 ± 0.84) mas / a | ||||||||||||
| Dec. portion: | (−124.29 ± 0.66) mas / a | ||||||||||||
| Physical Properties | |||||||||||||
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Other names and catalog entries |
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HD 4203 is a star of the spectral class G5 in the constellation Pisces, about 250 light-years away . It has about the same mass as the sun and is accompanied by an exoplanet called HD 4203 b .
Exoplanet
HD 4203 b orbits the central star with a period of about 430 days at a distance of about 1.2 astronomical units . It has a mass of at least about 2 Jupiter and was discovered in 2001 by Steven Vogt et al. discovered using the radial velocity method.
Web links
The star in the "Encyclopedia of Extrasolar Planets"
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 from apparent brightness and distance