Epsilon Reticuli b

Planetbox begin
name=Epsilon Reticuli bPlanetbox orbit
semimajor=1.271±0.073
eccentricity=0.060±0.043
period=428.1±1.1
ang_dist = 65.193
long_peri=216
t_peri=2,451,963±55
semi-amp=32.2±1.4Planetbox character
mass=>1.56±0.14Planetbox discovery
discovery_date=Dec 16, 2000
discovery_site=Anglo-Australian
Observatory
discovery_method=Radial velocity
discoverers=Butler, Tinney,
Marcy et al.
discovery_status=PublishedPlanetbox catalog
names=Epsilon Reticuli Ab

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 highly successful radial velocity method. The planet's mass is at least 56% greater than Jupiter, a more accurate estimate requiring its inclination to be known.

The planet orbits its parent star relatively close, and with more than twice the eccentricity of Earth's orbit. The planet is certainly a gas giant and although this does not preclude life as we may or not know it, the planet still receives more than 16 times the heat Earth receives at Perihelion, and this factor is what dissolves hope of it having life, in the planet's atmosphere or in any massive moons (which cannot be detected with current technology) that the planet may have within its Hill sphere radius.

Basic Insolation Figures Chart

^[1] ((1.2 × 6.955e8 m)² (5.67051e-8) (4749°K)⁴) / (1.271×149597876600)² = 19,502.849 W/m²

References

*cite journal | url=http://www.journals.uchicago.edu/doi/full/10.1086/321467 | author=Butler "et al." | title=Two New Planets from the Anglo-Australian Planet Search | journal=The Astrophysical Journal | volume=555 | issue=1 | year=2001 | pages=410 – 417 | doi=10.1086/321467
*cite journal | url=http://www.journals.uchicago.edu/doi/abs/10.1086/504701 | author=Butler "et al." | title=Catalog of Nearby Exoplanets | journal=The Astrophysical Journal | volume=646 | issue=1 | pages=505 – 522 | year=2006 | doi=10.1086/504701 ( [http://xxx.lanl.gov/abs/astro-ph/0607493 web Preprint] )

External links

* [http://simbad.u-strasbg.fr/sim-id.pl?Ident=HD+27442+B SIMBAD planet entry]
* [http://www.obspm.fr/encycl/encycl.html The Extrasolar Planets Encyclopaedia] [http://www.obspm.fr/encycl/HD27442.html entry]
* [http://www.extrasolar.net/startour.asp?StarCatId=&StarId=127 "ε Reticuli"] at Extrasolar Visions
* [http://www.extrasolar.net/planettour.asp?StarCatId=normal&PlanetId=153 "ε Reticuli Ab"] at Extrasolar Visions