HD 45364 c

HD 45364 c

Extrasolar planet		List of extrasolar planets
Parent star
Star		HD 45364
Constellation		Canis Major
Right ascension	(α)	06h 25m 38s
Declination	(δ)	–31° 28′ 51″
Apparent magnitude	(mV)	8.07
Distance		106.3 ly (32.6 pc)
Spectral type		G9V
Orbital elements
Semimajor axis	(a)	0.8972 AU
Periastron	(q)	0.8098 AU
Apastron	(Q)	0.9846 AU
Eccentricity	(e)	0.0974 ± 0.012
Orbital period	(P)	342.85 ± 0.28 d (0.93866 ± 0.00077 y)
Argument of periastron	(ω)	7.41 ± 4.3°
Time of periastron	(T0)	2453500 JD
Physical characteristics
Minimum mass	(m sin i)	0.6579 MJ
Discovery information
Discovery date		August 8, 2008
Discoverer(s)		Correia et al.
Detection method		Doppler spectroscopy using HARPS
Discovery site		La Silla Observatory
Discovery status		Published
Database references
Extrasolar Planets Encyclopaedia		data
SIMBAD		data

HD 45364 c is an extrasolar planet located approximately 106 light years away in the constellation of Canis Major, orbiting the 8th magnitude G-type main sequence star HD 45364. This planet is located in a 3:2 orbital resonance with HD 45364 b. It has minimum mass 3.5 times more massive than HD 45364 b, or 66% that of Jupiter. Its orbit takes 343 days, which is 22 days less than the Earth’s. Its eccentricity is similar to Mars, in which the orbital distance ranges from 0.81 to 0.98 astronomical units. This planet was discovered by HARPS on August 8, 2008, same day as the planet HD 45364 b.

References

• Correia et al.; Udry, S.; Mayor, M.; Benz, W.; Bertaux, J.-L.; Bouchy, F.; Laskar, J.; Lovis, C. et al. (2009). "The HARPS search for southern extra-solar planets XVI. HD 45364, a pair of planets in a 3:2 mean motion resonance" (abstract). Astronomy and Astrophysics 496 (2): 521–526. arXiv:0902.0597. Bibcode:2009A&A...496..521C. doi:10.1051/0004-6361:200810774.  (web preprint)