Misplaced Pages

HD 4313 b

Article snapshot taken from[REDACTED] with creative commons attribution-sharealike license. Give it a read and then ask your questions in the chat. We can research this topic together.
Extrasolar planet in the constellation Pisces
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
Discovered byJohnson et al.
Discovery siteKeck Observatory
Discovery date2010-03-17
Detection methodDoppler spectroscopy
Orbital characteristics
Semi-major axis1.157±0.097 AU
Eccentricity0.147±0.047
Orbital period (sidereal)356.21±0.88 d
Time of perihelion2454816±12 JD
Argument of perihelion102±13 º
Semi-amplitude40.3±1.7 m/s
StarHD 4313
Physical characteristics
Mean radius~1.2 RJ
Mass≥1.927±0.090 MJ
Surface gravity69.25 m/s
Temperature479.9 K (206.8 °C; 404.1 °F)

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

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. Its orbit distance is similar, about 1 AU away from its host star. According to the latest data, this planet has a somewhat eccentric orbit.

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.

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.

External links


Categories:
HD 4313 b Add topic