HD 23596 b

HD 23596 b

Exoplanet		List of exoplanets
Parent star
Star		HD 23596
Constellation		Perseus
Right ascension	(α)	03^h 48^m 00.3739^s
Declination	(δ)	+40° 31′ 50.287″
Apparent magnitude	(mV)	7.24
Distance		170 ly (52 pc)
Spectral type		F8
Orbital elements
Semi-major axis	(a)	2.83 AU (423 Gm)
		54.4 mas
Periastron	(q)	2.00 AU (300 Gm)
Apastron	(Q)	3.66 AU (547 Gm)
Eccentricity	(e)	0.292 ± 0.023
Orbital period	(P)	1565 ± 21 d (4.285 y)
Argument of periastron	(ω)	274.1 ± 3.9°
Time of periastron	(T0)	2,451,604 ± 15 JD
Semi-amplitude	(K)	124.0 ± 3.0 m/s
Physical characteristics
Minimum mass	(m sin i)	7.80 ± 0.35 MJ
Discovery information
Discovery date		June 2002
Discoverer(s)		Perrier et al.
Discovery method		radial velocity
Discovery site		Haute-Provence Observatory
Discovery status		Published

HD 23596 b is an exoplanet approximately 170 light years away in the constellation Perseus. The planet is very massive, at least 7.8 times that of Jupiter, classifying as mid-superjovian. Based on its mass, the planet would probably be a gas giant with no solid surface. The planet orbits at the average distance of 2.83 AU, taking 1565 days to complete its orbit with average velocity of 19.7 km/s. The eccentricity of the planet’s orbit is higher than all the planets in the Solar System, bringing as close as 2.00 AU to as far as 3.66 AU from the parent star.^[1]

The planet was discovered by Perrier et al. in 2002 using his radial velocity technique to look for changes in inward (blue-shifting) and outward (red-shifting) radial stellar motion in the sky.^[1]

References

1. Perrier, C.; et al. (2003). "The ELODIE survey for northern extra-solar planets. I. Six new extra-solar planet candidates". Astronomy and Astrophysics. 410 (3): 1039–1049. arXiv:astro-ph/0308281. Bibcode:2003A&A...410.1039P. doi:10.1051/0004-6361:20031340.

External links

• "Notes for planet HD 23596b". The Extrasolar Planet Encyclopaedia.

Coordinates: 03^h 48^m 00.3739^s, +40° 31′ 50.287″