HD 212301
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Octans |
| Right ascension | Template:RA[1] |
| Declination | Template:DEC[1] |
| Apparent magnitude (V) | 7.76[2] |
| Characteristics | |
| Spectral type | F8V[3] + M3V[4] |
| B−V Template:Engvar | Script error: No such module "val".[2] |
| Astrometry | |
| Radial velocity (Rv) | Script error: No such module "val".[2] km/s |
| Proper motion (μ) | RA: Script error: No such module "val".[1] mas/yr Dec.: Script error: No such module "val".[1] mas/yr |
| Parallax (π) | 18.4109±0.0290 mas[1] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | 4.06[2] |
| Details | |
| A | |
| Mass | 1.20[5] Template:Solar mass |
| Radius | Script error: No such module "val".[1] Template:Solar radius |
| Luminosity | Script error: No such module "val".[1] Template:Solar luminosity |
| Surface gravity (log g) | 4.35[5] cgs |
| Temperature | Script error: No such module "val".[5] K |
| Metallicity [Fe/H] | Script error: No such module "val".[2] dex |
| Rotational velocity (v sin i) | 5.44[6] km/s |
| Age | Script error: No such module "val".[2] Gyr |
| B | |
| Mass | Script error: No such module "val".[4] Template:Solar mass |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[7] | |
| Database references | |
| SIMBAD | data |
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HD 212301 is a binary star[4] system in the south circumpolar constellation of Octans. This star is also called HIP 110852.[7] With an apparent visual magnitude of 7.76,[2] it is too faint to be visible to the naked eye. The system is located at a distance of 177 light years from the Sun based on parallax,[1] and is drifting further away with a radial velocity of +4.7 km/s.[2] It has an absolute magnitude of 4.06.[2]
The primary, component A, is an F-type main-sequence star with a stellar classification of F8V.[3] It has 20%[5] greater mass than the Sun and a 23%[1] larger radius. Its age is about the same as the Sun and it is spinning with a projected rotational velocity of 5.4 km/s.[6] It is a metal-rich star with 50% more metals than the Sun has.[6] The star is radiating 1.9[1] times the luminosity of the Sun from its photosphere at an effective temperature of 6,169 K.[1]
A secondary companion was announced in 2009. This faint star is located at an angular separation of Script error: No such module "val". to the northwest of the primary, corresponding to a projected separation of Script error: No such module "val".. This is a red dwarf with an estimated class of M3V and a mass equal to around 35% of the mass of the Sun. The pair share a common proper motion.[4]
A hot jupiter candidate exoplanet was discovered orbiting the primary, based on radial velocity observations taken in 2003 and 2005.[6]
Template:OrbitboxPlanet begin Template:OrbitboxPlanet
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See also
References
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- ↑ a b Template:Cite simbad
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External links
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