Extrasolar planet | List of extrasolar planets | |
---|---|---|
Parent star | ||
Star | HD 108874 | |
Constellation | Coma Berenices | |
Right ascension | (α) | 12h 30m 26.8829s |
Declination | (δ) | +22° 52′ 47.383″ |
Distance | 223.4 ly (68.5 pc) |
|
Spectral type | G5 | |
Orbital elements | ||
Semimajor axis | (a) | 2.68 ± 0.25 AU |
Eccentricity | (e) | 0.25 ± 0.07 |
Orbital period | (P) | 1605.8 ± 88 d |
Inclination | (i) | ?° |
Argument of periastron |
(ω) | 17.3 ± 23° |
Time of periastron | (T0) | 2,449,584.8 ± 180 JD |
Semi-amplitude | (K) | 18.35 ± .86 m/s |
Physical characteristics | ||
Mass | (m) | >1.018 ± 0.3 MJ |
Discovery information | ||
Discovery date | June 24, 2005 | |
Discoverer(s) | Vogt Butler Marcy Fischer |
|
Detection method | radial velocity | |
Discovery site | California, USA | |
Discovery status | Published |
HD 108874 c is a gas giant discovered in 2005[1] which orbits beyond the star's habitable zone, and receives insolation 15.9% that of Earth. It has minimum mass similar to Jupiter, although since inclination of the orbit is not known. The true mass of this planet will probably be much greater. This planet is believed to be a Water Cloud Jovian. The planets appearance is white water ice clouds. The planet is positioned at earthlike temperatures at mean orbital distance of 2.68 + 0.25 AU within habitability zone.