HD 4313 b

HD 4313 b is an extrasolar planet orbiting the K-type star HD 4313 approximately 447 light years away in the constellation Pisces.[1] This planet was discovered using the Doppler spectroscopy (radial velocity) method.

HD 4313 b
An artist's impression of HD 4313 b orbiting its parent star.
An artist's impression of HD 4313 b orbiting its parent star.
Discovery[1]
Discovered byJohnson et al.
Discovery siteKeck Observatory
Discovery date2010-03-17
Doppler spectroscopy
Orbital characteristics[2]
1.157±0.097 AU
Eccentricity0.147±0.047
356.21±0.88 d
2454816±12 JD
102±13 º
Semi-amplitude40.3±1.7 m/s
StarHD 4313
Physical characteristics
Mean radius
~1.2 RJ
Mass≥1.927±0.090 MJ[2]
69.25 m/s2
Temperature479.9 K (206.8 °C; 404.1 °F)

    Discovery

    HD 4313 was discovered by a group of scientist at the Keck Observatory on March 17, 2010 using the Doppler spectroscopy method, which is detecting a planet by the star's change in wobbling.

    Properties

    Orbit

    HD 4313 has an orbital period similar to Earth, with an orbit of approximately, 356 days.[3] Its orbit distance is similar, about 1 AU away from its host star.[3] According to the latest data, this planet has a somewhat eccentric orbit.[3]

    Physical characteristics

    HD 4313 has a mass only 92.7% greater than that of Jupiter, but its radius and inclination is unknown, so the true mass and radius can't be studied. A best estimate of the radius is 1.2 times that of Jupiter.[4]

    See also

    References
    1. Johnson, John Asher; et al. (2010). "Retired a Stars and Their Companions. IV. Seven Jovian Exoplanets from Keck Observatory". Publications of the Astronomical Society of the Pacific. 122 (892): 701–711. arXiv:1003.3445. Bibcode:2010PASP..122..701J. doi:10.1086/653809. S2CID 188131.
    2. Luhn, Jacob K.; et al. (2019). "Retired A Stars and Their Companions. VIII. 15 New Planetary Signals around Subgiants and Transit Parameters for California Planet Search Planets with Subgiant Hosts". The Astronomical Journal. 157 (4). 149. arXiv:1811.03043. Bibcode:2019AJ....157..149L. doi:10.3847/1538-3881/aaf5d0. S2CID 102486961.
    3. "Exoplanet Archive". exoplanetarchive.ipac.caltech.edu. Retrieved 2020-12-11.
    4. "Exoplanet-catalog". Exoplanet Exploration: Planets Beyond our Solar System. Retrieved 2020-12-11.
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