Epsilon Reticuli b, sometimes designated Epsilon Reticuli Ab to distinguish from the white dwarf companion of the primary star Epsilon Reticuli, also known as HD 27442, was discovered on December 16, 2000 by the Anglo-Australian Planet Search Team using the radial velocity method. The planet's mass is at least 56% greater than Jupiter mass, a more accurate estimate requiring its inclination to be known.

Epsilon Reticuli b
Discovered byButler, Tinney,
Marcy et al.[1]
Discovery siteAnglo-Australian
Discovery dateDec 16, 2000
Radial velocity
Orbital characteristics
1.271 ± 0.073 AU (190,100,000 ± 10,900,000 km)
Eccentricity0.060 ± 0.043
428.1 ± 1.1 d
2,451,963 ± 55
Semi-amplitude32.2 ± 1.4
StarEpsilon Reticuli
Physical characteristics
Mass≥1.56 ± 0.14 MJ

The planet orbits its parent star relatively close, and with more than twice the eccentricity of Earth's orbit. Based on its mass, it is almost certainly a gas giant.[1][2]

References edit

  1. ^ a b Butler, R. P.; et al. (2001). "Two New Planets from the Anglo-Australian Planet Search". The Astrophysical Journal. 555 (1): 410–417. Bibcode:2001ApJ...555..410B. doi:10.1086/321467. hdl:2299/137. S2CID 122572834.
  2. ^ Butler, R. P.; et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal. 646 (1): 505–522. arXiv:astro-ph/0607493. Bibcode:2006ApJ...646..505B. doi:10.1086/504701. S2CID 119067572.

External links edit