Global InformationXi Gruis information
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Grus |
| Right ascension | 21h 32m 05.87583s[1] |
| Declination | −41° 10′ 45.5242″[1] |
| Apparent magnitude (V) | 5.29[2] |
| Characteristics | |
| Spectral type | K0 III[3] |
| B−V color index | +1.10[2] |
| Astrometry | |
| Radial velocity (Rv) | −9.81±0.13[1] km/s |
| Proper motion (μ) | RA: +19.427[1] mas/yr Dec.: +11.278[1] mas/yr |
| Parallax (π) | 7.5904 ± 0.1226 mas[1] |
| Distance | 430 ± 7 ly (132 ± 2 pc) |
| Absolute magnitude (MV) | −0.47[4] |
| Details | |
| Radius | 19.2±0.6[1] R☉ |
| Luminosity | 161.7±3.1[1] L☉ |
| Temperature | 4,703+76 −74[1] K |
| Other designations | |
ξ Gru, CD−41° 14550, FK5 3719, HD 204783, HIP 106327, HR 8229, SAO 230726[5] | |
| Database references | |
| SIMBAD | data |
ξ Gruis, Latinised as Xi Gruis, is a solitary[6] star in the southern constellation of Grus, near the constellation border with Microscopium. It is visible to the naked eye as a dim, orange-hued star with an apparent visual magnitude of 5.3.[2] The star is located about 430 light-years distant from the Sun, based on parallax, but is drifting closer with a radial velocity of −10 km/s.[1]
This is an evolved giant star with a stellar classification of K0 III,[3] having exhausted the supply of hydrogen at its core then cooled and expanded. It now has 19 times the girth of the Sun and is radiating 12 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,703 K.[1]
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