HD 38801 b

HD 38801 b
Exoplanet List of exoplanets
Parent star
Star HD 38801
Right ascension (α) 05 47 59.18
Declination (δ) -08 19 39.72
Apparent magnitude (mV) 8.26
Distance324 ly
(99.4 pc)
Spectral type K0IV
Mass (m) 1.36 M☉
Temperature (T) 5222 K
Metallicity [Fe/H] 0.26
Physical characteristics
Mass(m)12.12 MJ
(3852 M⊕)
Orbital elements
Semi-major axis(a) 1.65 AU
Eccentricity (e) 0.0
Orbital period(P) 693.5 d
(1.9 y)
Discovery information
Discovery date 2010
Discoverer(s)
Discovery method Radial Velocity
Discovery status confirmed
Other designations
2MASS J05475919-0819396 b, BD-08 1218 b, HIP 27384 b, SAO 132543 b, SD-08 1218 b, TYC 5347-00367-1 b, WISE J054759.14-081940.4 b
Database references
Extrasolar Planets
Encyclopaedia		38801&p2=b data
SIMBAD38801 data
Exoplanet Archive38801 data
Open Exoplanet Catalogue38801+b data

HD 38801 b is an extrasolar, gas giant planet located in the constellation of Orion[1] whose discovery was announced in 2009 and was made using the radial velocity method.[2] The object, with a mass roughly 12 times that of Jupiter,[2] is located 324 light years (99.4 parsecs) from Earth[3][4] orbiting 1.65 astronomical units from its G-type star, HD 38801.[2][5] HD 38801 b, besides being the only planet in its system[3] also lies within the inner habitable zone[4] and takes around 1.9 years, or 693.5 days to complete a full orbit.[2]

Low Eccentricity

Hd 38801 b is characterized by its uniquely low eccentricity values, or having a near circular orbit. As a super massive planet with an orbital period of hundreds of days, this occurrence is quite uncommon.[6]

References

  1. ↑ http://exoplorer.org/en/exoplanets/hd-38801-b
  2. 1 2 3 4 "HD 38801 b – New World Atlas – Exoplanet Exploration: Planets Beyond our Solar System". Exoplanet Exploration: Planets Beyond our Solar System.
  3. 1 2 http://www.openexoplanetcatalogue.com/planet/HD%2038801%20b/
  4. 1 2 "HD 38801". exoplanetkyoto.org.
  5. ↑ "HD 38801 b". exoplanetarchive.ipac.caltech.edu.
  6. ↑ http://iopscience.iop.org/article/10.1088/0004-637X/715/1/550/meta
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