HD 92589
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Antlia[1] |
| Right ascension | 10h 40m 51.5391s[2] |
| Declination | −35° 44′ 30.176″[2] |
| Apparent magnitude (V) | 6.39±0.01[3] |
| Characteristics | |
| Spectral type | G8/K0 III + F/G[4] |
| U−B color index | +0.02[5] |
| B−V color index | +0.92[5] |
| Astrometry | |
| Radial velocity (Rv) | 11±5.4[6] km/s |
| Proper motion (μ) | RA: −25.072 mas/yr[2] Dec.: +5.872 mas/yr[2] |
| Parallax (π) | 5.5014±0.1586 mas[2] |
| Distance | 590 ± 20 ly (182 ± 5 pc) |
| Absolute magnitude (MV) | −0.78[1] |
| Details | |
| A | |
| Mass | 2.3[7] M☉ |
| Radius | 13.07[8] R☉ |
| Luminosity | 141[2] L☉ |
| Surface gravity (log g) | 2.54[7] cgs |
| Temperature | 5,171±122[9] K |
| Metallicity [Fe/H] | −0.29[10] dex |
| Rotational velocity (v sin i) | 1.6±1.2[11] km/s |
| B | |
| Mass | 2.96[12] M☉ |
| Other designations | |
| 76 G. Antliae, CD−35°6646, CPD−35°4320, FK5 2586, HD 92589, HIP 52273, HR 4183, SAO 201631, WDS J10409-3545 | |
| Database references | |
| SIMBAD | data |
HD 92589 (HR 4183) is a double star in the constellation Antlia. The system has a combined apparent magnitude of 6.39,[3] placing it near the limit of naked eye visibility. The system is located about 590 light years[2] away based on its parallax shift and has a heliocentric radial velocity of 11 km/s.[6] This indicates that it is drifting away from the Solar System.
The system has a composite stellar classification of G8/K0 III + F/G.[4] This indicates that the primary spectrum intermediate between a G8 and K0 giant star while the companion is probably a F-type or G-type star. As of 1991, the pair have a projected separation of 700 mas along a position angle of 48°.[13] Both stars take 1,591 years to orbit each other.[13][12]
At present the visible component has 2.3 times the mass of the Sun[7] but has expanded to 13.07[8] times its girth. It shines with a luminosity 141[2] times greater than the Sun from its enlarged photosphere at an effective temperature of 5,171 K,[9] which gives the yellow hue of a G-type star. HD 92589A is metal-deficient, with an iron abundance only 51%[10] that of the Sun and spins leisurely with a projected rotational velocity of 1.6 km/s,[11] common for giant stars.
References
[edit | edit source]- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). XHIP record for this object at VizieR.
- ^ a b c d e f g Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). Gaia DR3 record for this source at VizieR.
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b c Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
