HD 190647 b

HD 190647 b
Exoplanet List of exoplanets
Parent star
Star HD 190647
Constellation Sagittarius
Right ascension (α) 20h 07m 19.6697s
Declination (δ) −35° 32 19.079
Distance176.8 ly
(54.2 pc)
Spectral type G5IV
Orbital elements
Semi-major axis(a) 2.07 ± 0.06 AU
Periastron (q) 1.70 AU
Apastron (Q) 2.44 AU
Eccentricity (e) 0.18 ± 0.02
Orbital period(P) 1038.1 ± 5.1 d
(2.8421 y)
Orbital speed (υ) 21.8 km/s
Argument of
periastron
(ω) 232.5 ± 9.6°
Time of periastron (T0) 2,453,868 ± 25 JD
Semi-amplitude (K) 36.4 ± 1.2 m/s
Physical characteristics
Mass(m)>1.9 MJ
Discovery information
Discovery date March 5, 2007
Discoverer(s) Naef et al.[1]
Discovery method HARPS
Discovery site Chile
Discovery status Published[1]
Other designations
HIP 99115 b
Database references
Extrasolar Planets
Encyclopaedia
data
SIMBADdata
Exoplanet Archivedata
Open Exoplanet Cataloguedata

HD 190647 b is >1.9 MJ planet orbiting the star HD 190647 at 309.7 gigameters or 10.04 μpc away from the star, taking 89.69 megaseconds to orbit the star with average velocity of 21.8 km/s. The orbital eccentricity is 18%. Dominique Naef discovered this planet in early 2007 by using HARPS spectrograph located in Chile.[1]

See also

References

  1. 1 2 3 Naef, M.; et al. (2007). "The HARPS search for southern extra-solar planets IX. Exoplanets orbiting HD 100777 , HD 190647 , and HD 221287". Astronomy and Astrophysics. 470 (2): 721–726. arXiv:0704.0917. Bibcode:2007A&A...470..721N. doi:10.1051/0004-6361:20077361.
  • "HD 190647". Exoplanets.

Coordinates: 20h 07m 19.6697s, −35° 32′ 19.079″


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