HD 212301

**HD 212301**
Observation data Epoch J2000.0
Constellation (pronunciation)	Octans
Right ascension	22h 27m 30.9195s
Declination	−77º 43' 04.5206″
Apparent magnitude (V)	7.77
Absolute magnitude (V)	4.16
Distance	171.93 ly (52.71 pc)
Spectral type	F8V
Other designations
CD−78 1011, HIP 110852, SAO 258040

HD 212301 is a star in the south circumpolar constellation Octans, located at a distance of 171.93 light years or 52.71 parsecs or 1.626 exameters away from the Sun. The magnitudes are m=7.77 and M=4.16. It is a peach main-sequence star of spectral type F8V. The temperature of the photosphere is 5998 Kelvin and have mass 5% more than our Sun. Its age is older than our local star by 1.3 billion years or by the factor of 1.3 times. It is a metal-rich star with 50% more metals than does the Sun has. This star is also called HIP 110852.

[edit] HD 212301 b

HD 212301 b is a low-mass exoplanet with a mass type IIc and an appearance type 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.