Kappa2 Sculptoris
Star in the constellation Sculptor
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Kappa2 Sculptoris, Latinized from κ2 Sculptoris, is a solitary,[11] orange-hued star in the southern constellation of Sculptor. It is faintly visible to the naked eye, with a combined apparent visual magnitude of +5.42.[3] Based upon an annual parallax shift of 5.7 mas as measured from Earth,[2] it is located approximately 571 light years from the Sun.
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Sculptor[1] |
| Right ascension | 00h 11m 34.42072s[2] |
| Declination | −27° 47′ 58.9908″[2] |
| Apparent magnitude (V) | +5.42[3] |
| Characteristics | |
| Evolutionary stage | red giant branch[2] |
| Spectral type | K2 III[4] |
| B−V color index | +1.35[3] |
| Astrometry | |
| Radial velocity (Rv) | −5.6±0.8[5] km/s |
| Proper motion (μ) | RA: +5.058[2] mas/yr Dec.: +12.900[2] mas/yr |
| Parallax (π) | 5.7132±0.0814 mas[2] |
| Distance | 571 ± 8 ly (175 ± 2 pc) |
| Absolute magnitude (MV) | −1.46[1] |
| Details | |
| Mass | 4.2[2] M☉ |
| Radius | 31[6] R☉ |
| Luminosity | 325[6] L☉ |
| Surface gravity (log g) | 1.34[7] cgs |
| Temperature | 4,393[6] K |
| Metallicity [Fe/H] | −0.40[7] dex |
| Rotational velocity (v sin i) | 2.2[8] km/s |
| Age | 1.63[9] Gyr |
| Other designations | |
| κ2 Scl, CD−28°26, FK5 5, HD 720, HIP 930, HR 34, SAO 166103, WDS J00116-2748A[10] | |
| Database references | |
| SIMBAD | data |
This is an evolved K-type giant star with a stellar classification of K2 III.[4] It is radiating 325 times the solar luminosity from its photosphere at an effective temperature of 4,393.[6] There is a faint optical companion with visual magnitude 21.0 located at an angular separation of 44.2 arc seconds along a position angle of 289°, as of 2010.[12]