HD 30562 b

HD 30562 b
Discovery
Discovery date	August 12, 2009
Detection method	Radial velocity
Orbital characteristics
Semi-major axis	2.30 ± 0.02 AU (344,100,000 ± 3,000,000 km)
Eccentricity	0.76 ± 0.05
Orbital period (sidereal)	1157 ± 27 d
Time of periastron	10131.5 ± 14
Argument of periastron	81 ± 10
Star	HD 30562

HD 30562 b is an extrasolar planet which orbits the F-type main sequence star HD 30562, located approximately 85.4 light years away in the constellation Eridanus.^[1]

This planet is unusual that it orbits in a very oval path like comets in the Solar System. The semimajor axis of the orbit is 2.30 AU and it ranges from 0.55 AU to 4.05 AU. It has minimum mass 1.29 times that of Jupiter. The orbital period of this planet is 38 months compared with 12 months for the Earth.

This eccentric Jupiter was discovered on August 12, 2009 by using the radial velocity method which was designed to study the wobble of stars cause by their planet's gravity over the course of their orbit. Another study confirmed it in 2012.^[2]

References[]

^ Fischer, Debra; et al. (2009). "Five planets and an independent confirmation of HD 196885 Ab from Lick Observatory". The Astrophysical Journal. 703 (2): 1545–1556. arXiv:0908.1596. Bibcode:2009ApJ...703.1545F. doi:10.1088/0004-637X/703/2/1545.
^ Marmier, M.; et al. (2013). "The CORALIE survey for southern extrasolar planets XVII. New and updated long period and massive planets". Astronomy and Astrophysics. 551. A90. arXiv:1211.6444. Bibcode:2013A&A...551A..90M. doi:10.1051/0004-6361/201219639.

Coordinates: 04^h 48^m 36.3857^s, −05° 40′ 26.561″

[Fischer2009-1] Fischer, Debra; et al. (2009). "Five planets and an independent confirmation of HD 196885 Ab from Lick Observatory". The Astrophysical Journal. 703 (2): 1545–1556. arXiv:0908.1596. Bibcode:2009ApJ...703.1545F. doi:10.1088/0004-637X/703/2/1545.

[Marmier2013-2] Marmier, M.; et al. (2013). "The CORALIE survey for southern extrasolar planets XVII. New and updated long period and massive planets". Astronomy and Astrophysics. 551. A90. arXiv:1211.6444. Bibcode:2013A&A...551A..90M. doi:10.1051/0004-6361/201219639.

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