HD 32963

HD 32963 is a G-type main sequence star located 124 light years away from Earth^[8] in the constellation of Taurus. It has a mass of 0.94 solar masses. It is 4.99 billion years old.^[9] It has one exoplanet orbiting it which was discovered using radial velocity. The exoplanet that has been named HD 32963 b is a Jupiter analogue due to its similar characteristics to the planet Jupiter such as orbit and size.^[3]

HD 32963

Observation data Epoch J2000      Equinox J2000
Constellation	Taurus[1]
Right ascension	05h 07m 55.76408s[2]
Declination	+26° 19′ 40.6750″[2]
Apparent magnitude (V)	7.60[3]
Characteristics
Spectral type	G3V[4] or G5IV[5]
B−V color index	0.6[3]
Astrometry
Radial velocity (Rv)	−62.49±0.12[2] km/s
Proper motion (μ)	RA: −69.896 mas/yr[2] Dec.: −66.118 mas/yr[2]
Parallax (π)	26.1310±0.0238 mas[2]
Distance	124.8 ± 0.1 ly (38.27 ± 0.03 pc)
Absolute magnitude (MV)	+4.80[1]
Details
Mass	1.03±0.05[5] M☉
Radius	1.1[2] R☉
Luminosity	1.1[2] L☉
Surface gravity (log g)	4.41±0.03[3] cgs
Temperature	5,727±32[3] K
Metallicity [Fe/H]	0.11±0.05[3] dex
Rotational velocity (v sin i)	1.10[6] km/s
Age	4.99+6.71 −3.55[3] Gyr
Other designations
BD+26 789, HD 32963, HIP 23884, SAO 76970, PPM 94086[7]
Database references
SIMBAD	data
Exoplanet Archive	data

Planetary system

It has one currently discovered exoplanet orbiting it named HD 32963 b. The planet orbits the star at a distance of 3.41 AU with an eccentricity of 0.07. It takes 2372 days to orbit the parent star. Its has a minimum mass of 0.7 Jupiter masses; in 2023 its inclination was measured by astrometry, showing it to have a true mass about twice that of Jupiter.^[5] The orbit and size of HD 32963 b is similar to the planet Jupiter. This makes it a Jupiter analogue planet.^[9][3]

The HD 32963 planetary system^[5]

Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (years)	Eccentricity	Inclination	Radius
b	2.07+0.83 −0.64 MJ	3.409+0.063 −0.064	6.483+0.064 −0.061	0.099±0.028	19.3+9.2 −5.7 or 160.7+5.7 −9.2°	—