HD 99109 b

HD 99109 b
Exoplanet List of exoplanets
Parent star
Star HD 99109
Constellation Leo
Right ascension (α) 11h 24m 17.359s[1]
Declination (δ) –01° 31′ 44.66″[1]
Apparent magnitude (mV) 9.1
Distance160 ± 10[1] ly
(50 ± 3[1] pc)
Spectral type K0V
Orbital elements
Semi-major axis(a) 1.105 ± 0.065 AU
Eccentricity (e) 0.09 ± 0.16
Orbital period(P) 439.3 ± 5.6 d
Argument of
periastron		 (ω) 256°
Time of periastron (T0) 2,411,310 ± 80 JD
Semi-amplitude (K) 14.1 ± 2.2 m/s
Physical characteristics
Minimum mass(m sin i)0.502 ± 0.07 MJ
Discovery information
Discovery date 15 July 2006
Discoverer(s) Butler et al.[2]
Discovery method Radial velocity
Discovery site  United States
Discovery status Confirmed
Database references
Extrasolar Planets
Encyclopaedia		data
SIMBADdata
Exoplanet Archivedata
Open Exoplanet Cataloguedata

HD 99109 b is an extrasolar planet approximately 197 light-years away in the constellation of Leo. The planet was confirmed in 2006 to be orbiting the orange dwarf star HD 99109. The planet is about one half the mass of Jupiter, classifying the planet as a Jovian planet. The orbital eccentricity is about the same as Mars.[2]

  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 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.
  • "HD 99109". Exoplanets. Retrieved 2008-07-18.
  • "HD 99109 b". PlanetQuest. Archived from the original on 2008-09-17. Retrieved 2008-07-18.

Coordinates: 11h 24m 17.358s, −01° 31′ 44.674″


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