A Sun-like star around which has been
found a high-mass planet in a very eccentric orbit. The companion of 70
Virginis is the prototype for the eccentric Jovian class of extrasolar planets. Although
this world may lie within the habitable zone of its host star – earning it the nickname "Goldilocks," since its
orbital distance is "just right" – two other factors argue against
the possibility of it harboring life. First, the planet moves in such an
elongated orbit that it must experience severe seasonal variations in climate.
Second, being so massive, it almost certainly has an immense, crushing atmosphere.
It appears to be similar in nature to the companion of HD
| Host star
||59.1 light-years (18.1 parsecs)
|luminosity (Sun = 1)
|mass (Sun = 1)
||R.A. 13h 28m 25.8s , Dec. +13° 46' 43.6"
|| HD 117176, HR 5072, BD+14°2621, Gl 512.1, WDS 13284+1347A,
|mass (Jupiter = 1)
||7.49 ± 0.61
||0.48 AU (72 million km, 44.6 million miles)
||1996, Marcy, Butler, et al
|method of discovery
- Marcy, G. W., and Butler, R. P. "A Planetary Companion to 70 Virginis," Astrophysical Journal Letters," 464, L147 (1996).
70 Vir (Extrasolar Planets Catalog)
PLANETS AND SUBSTELLAR OBJECTS