HD 66428 b

HD 66428 b
Exoplanet List of exoplanets
Parent star
Star HD 66428
Constellation Monoceros
Right ascension (α) 08h 03m 28.666s[1]
Declination (δ) –01° 09′ 45.75″[1]
Distance180±10[1] ly
(55±3[1] pc)
Spectral type G5
Orbital elements
Semi-major axis(a) 3.471±0.069[2] AU
Eccentricity (e) 0.440±0.013[2]
Orbital period(P) 2293.9±6.4[2] d
Argument of
periastron		 (ω) 180.4±2.6[2]°
Time of periastron (T0) 2452278±16[2] JD
Semi-amplitude (K) 52.6±1.1[2] m/s
Physical characteristics
Minimum mass(m sin i)3.194±0.060[2] MJ
Discovery information
Discovery date July 15, 2006
Discoverer(s) Butler et al.[3]
Discovery method Radial velocity
Discovery site United States California
Discovery status Published[3]

HD 66428 b is a long-period jovian exoplanet located approximately 179.3 light-years away in the constellation of Monoceros. It has a mass of >2.82 MJ and takes 1973 days or 5.402 years to orbit around its solar-type star HD 66428. The average distance is 3.18 AU, about half the distance between Mars and Jupiter. This planet is a so-called eccentric Jupiter with an orbital eccentricity of 0.465. At periastron, the distance is 1.70 AU and at apastron, the distance is 4.66 AU.[3]

See also

References

  1. 1 2 3 4 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
  2. 1 2 3 4 5 6 7 Feng, Y. Katherina; et al. (2015). "The California Planet Survey IV: A Planet Orbiting the Giant Star HD 145934 and Updates to Seven Systems with Long-period Planets". The Astrophysical Journal. 800. 22. arXiv:1501.00633. Bibcode:2015ApJ...800...22F. doi:10.1088/0004-637X/800/1/22.
  3. 1 2 3 Butler, R. P.; et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal. 646 (1): 505–522. arXiv:astro-ph/0607493. Bibcode:2006ApJ...646..505B. doi:10.1086/504701.
  • "Notes for planet HD 66428 b". The Extrasolar Planets Encyclopaedia. Retrieved 2008-08-20.
  • "HD 66428". Exoplanets. Retrieved 2008-08-20.

Coordinates: 08h 03m 28.6652s, −01° 09′ 45.752″


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