HD 167714
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| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Octans |
| Right ascension | 18h 29m 19.94396s[1] |
| Declination | −80° 13′ 57.7452″[1] |
| Apparent magnitude (V) | 5.95±0.01[2] |
| Characteristics | |
| Evolutionary stage | red giant branch[3] |
| Spectral type | K2 III[4] |
| U−B color index | +1.27[5] |
| B−V color index | +1.16[5] |
| Astrometry | |
| Radial velocity (Rv) | −13.9±0.4[6] km/s |
| Proper motion (μ) | RA: −22.298 mas/yr[1] Dec.: −63.166 mas/yr[1] |
| Parallax (π) | 9.0795±0.026 mas[1] |
| Distance | 359 ± 1 ly (110.1 ± 0.3 pc) |
| Absolute magnitude (MV) | +0.57[7] |
| Details | |
| Mass | 1.39+0.40 −1.10[8] M☉ |
| Radius | 12.28[9] R☉ |
| Luminosity | 64.6+3.0 −2.9[8] L☉ |
| Surface gravity (log g) | 2.55[1] cgs |
| Temperature | 4,692±122[9] K |
| Metallicity [Fe/H] | +0.11[10] dex |
| Rotational velocity (v sin i) | 1.7±1.2[11] km/s |
| Age | 1.99+0.843 −0.453[10] Gyr |
| Other designations | |
| 32 G. Octantis[12], CPD−80°849, GC 25089, HD 167714, HIP 90606, HR 6837, SAO 258796[13] | |
| Database references | |
| SIMBAD | data |
HD 167714, also known as HR 6837, is a solitary, orange hued star located in the southern circumpolar constellation Octans. It has apparent magnitude of 5.95,[2] allowing it to be faintly visible to the naked eye. Based on parallax measurements from Gaia, the object is estimated to be 359 light years distant.[1] With a heliocentric radial velocity of −13.9 km/s,[6] it is approaching the Solar System.
This is an evolved red giant with a stellar classification of K2 III.[4] It appears to be on the red giant branch,[3] generating energy by fusing a hydrogen shell around an inert helium core. At present it has 1.4 times the mass of the Sun[8] and at the age of two billion years,[10] it has expanded to 12.3 times its girth.[9] It shines with a luminosity 65 times greater than that of the Sun[8] from its enlarged photosphere at an effective temperature of 4,692 K.[9] HD 167714 has a near-solar metallicity[10] and is spinning slowly with a projected rotational velocity of 1.7 km/s.[11]
