HD 212301 b

Planetbox begin
name = HD 212301 b Planetbox star
star = HD 212301
constell = Octans
RA = RA|22|27|30.9195
DEC = DEC|–77|43|04.521
dist_ly = 171.93
dist_pc = 52.71
class = F8VPlanetbox orbit
semimajor = 0.0341
semimajor_gigameter = 5.10
periastron = 0.0341
periastron_gigameter = 5.10
apastron = 0.0341
apastron_gigameter = 5.10
eccentricity = 0
period = 2.24572 ± 28
period_year = 0.00614834
period_megasecond = 0.194030
speed = 166
ang_dist = 0.647
long_peri = 0
t_peri = 2453549.195 ± 0.004
semi-amp = 59.5 ± 0.7Planetbox character
mass = >0.396
radius = ~0.814
density = ~974
gravity_earth = ~1.58
gravity = ~15.5
temperature = ~1540 Planetbox discovery
discovery_date = August 22, 2005
discoverers = Lo Curto "et al"
discovery_method = Doppler spectroscopy
discovery_site = La Silla Observatory
discovery_status = Published Planetbox catalog
names = HIP 110852 b

HD 212301 b is an extrasolar planet located approximately 172 light-years (53 parsecs) away in the constellation of Octans, orbiting the star HD 212301. This is a low-mass exoplanet with a mass class of III (sub-Jupiter) and an appearance class of L (Alkali metal giant). It has an orbital period of 2.25 Earth days with the angular separation of 0.65 milliarcsecond. The orbital distance is 0.0341 astronomical units or 5.10 gigameters or 0.165 microparsecs. The periastron and apastron distance are identical to average orbital distance, meaning its eccentricity is 0.0%. The longitude of periastron is close to 0° or 360°. The time of periastron is 2,453,549.195 JD. The average orbital speed of this planet is as fast as 165.8 km/s. The semi-amplitude or the speed of the stellar wobble caused by a planet is 59.5 m/s.

On August 22, 2005, taking place in ESO La Silla Observatory in Chile, the planet was discovered by Lo Curto who used the HARPS spectrometer.

See also

* HD 213240 b

References

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External links

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