HD 4203

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**HD 4203**
Observation data Epoch J2000.0
Constellation (pronunciation)	Pisces
Right ascension	00^h 44^m 41.2^s
Declination	+20° 26′ 56.1″
Apparent magnitude (V)	+8.68
Absolute magnitude (V)	+4.23
Distance	253 ly (77.5 pc)
Spectral type	G5
Other designations
BD+19º117, HIP 3502, SAO 74235

HD 4203 is a 9th magnitude star in the constellation Pisces. The star is yellow with spectral type G5. It is approximately 253 ly away. The star has evolved for 9.41 billion years. The star has a giant planet orbiting around +0.22 dex star.

[edit] HD 4203 b

**HD 4203 b**
Orbital elements
Extrasolar planet		List of extrasolar planets
Semimajor axis	(a)	2.07±0.13 AU
Eccentricity	(e)	0.519±0.027
Orbital period	(P)	431.88±0.85 d
Angular distance	(θ)	26.71 mas
Longitude of periastron	(ω)	329.1±3.1°
Time of periastron	(T₀)	2,451,918.9±2.7 JD
Semi-amplitude	(K)	60.3±2.2 m/s
Physical characteristics
Mass	(m)	>1.16 M_J
Discovery information
Discovery date		2001
Discoverer(s)		Vogt et al.
Detection method		radial velocity
Discovery site		Keck telescope
Discovery status		Published

HD 4203 b is a planet more massive than Jupiter. It orbits two times further from the star than Earth to the Sun. The planet takes 1.1824 year to orbit the star very eccentrically from 1.00 AU to 3.14 AU. The planet was discovered by Steve Vogt using the Keck telescope.