HD 102272 c

HD 102272 c
Extrasolar planet List of extrasolar planets
Parent star
Star HD 102272
Constellation Leo
Right ascension (α) 11h 46m 23.5351s[1]
Declination (δ) +14° 07′ 26.350″[1]
Apparent magnitude (mV) 8.71[1]
Distance1200±300 ly
(360±90[2] pc)
Spectral type K0[3]
Orbital elements
Semimajor axis(a) 1.57 ± 0.05[3] AU
Eccentricity (e) 0.68 ± 0.06[3]
Orbital period(P) 520 ± 26[3] d
Argument of
periastron		 (ω) 320 ± 10[3]°
Time of periastron (T0) 2454135 ± 260[3] JD
Semi-amplitude (K) 59 ± 11[3] m/s
Physical characteristics
Mass(m)>2.6 ± 0.4[3] MJ
Discovery information
Discovery date 18 June 2008
Discoverer(s) Niedzielski et al.
Discovery method Radial velocity
Discovery site McDonald Observatory, USA
Discovery status Published[3]

HD 102272 c is an extrasolar planet approximately 1,200 light-years away in the constellation of Leo. The planet is orbiting the K-type giant star HD 102272. The planet was discovered by the radial velocity method, using the Hobby-Eberly Telescope. Another planet, HD 102272 b, was also discovered orbiting the same star. Although there is evidence for the existence of this planet, data is insufficient to unambiguously determine its orbit. The discovery was announced in June 2008. It's thought to have at least 2.6 times the mass of Jupiter.[3]

See also

References

  1. ↑ 1.0 1.1 1.2 HD 102272, entry, SIMBAD. Accessed on line June 18, 2008.
  2. ↑ "Notes for star HD 102272". The Extrasolar Planets Encyclopaedia. Retrieved 2008-07-01.
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 Niedzielski, A. et al. (2009). "A Planet in a 0.6 AU Orbit Around the K0 Giant HD 102272". The Astrophysical Journal 693 (1): 276–280. arXiv:0810.1710. Bibcode:2009ApJ...693..276N. doi:10.1088/0004-637X/693/1/276.

External links

Coordinates: 11h 46m 23.5351s, +14° 07′ 26.350″