HD 43197 b

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HD 43197 b
Exoplanet List of exoplanets
Parent star
Star HD 43197
Constellation Canis Major
Right ascension (α) 06h 13m 35.662s[1]
Declination (δ) –29° 53′ 50.17″[1]
Apparent magnitude (mV) 8.95
Distance 180 ± 10[1] ly
(56 ± 4[1] pc)
Spectral type G9IV/V
Orbital elements
Semi-major axis (a) 0.868 AU
(129.8 Gm)
    15.8 mas
Orbital period (P) 327.8 d
(0.8975 y)
Physical characteristics
Minimum mass (m sin i) 0.6 MJ
Discovery information
Discovery date October 19, 2009
Discoverer(s) Naef et al.
Discovery method radial velocity (HARPS)
Discovery site La Silla Observatory
Discovery status Published[2]
Database references
Extrasolar Planets
Exoplanet Archive data
Open Exoplanet Catalogue data

HD 43197 b is an extrasolar planet which orbits the G-type main sequence or subgiant star HD 43197, located approximately 180 light years away in the constellation Canis Major. This planet has at least three-fifths the mass of Jupiter and takes 0.9 years to orbit the star at a semimajor axis of 0.868 AU.[2] However unlike most other known exoplanets, its eccentricity is not known, but it is typical that its inclination is not known. This planet was detected by HARPS on October 19, 2009, together with 29 other planets.


Coordinates: Sky map 06h 13m 35.6615s, −29° 53′ 50.169″