| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Musca |
| Right ascension | 13h 17m 13.01064s[1] |
| Declination | −66° 47′ 00.3789″[1] |
| Apparent magnitude (V) | 4.86[2] |
| Characteristics | |
| Spectral type | K2 Ib-II[3] |
| B−Vcolor index | 1.480±0.004[2] |
| Variable type | Suspected[4] |
| Astrometry | |
| Radial velocity (Rv) | −10.38±0.17[1] km/s |
| Proper motion (μ) | RA: −15.03±0.20[2]mas/yr Dec.: −6.63±0.17[2]mas/yr |
| Parallax (π) | 2.3868±0.1235 mas[1] |
| Distance | 1,370 ± 70 ly (420 ± 20 pc) |
| Absolute magnitude (MV) | −2.94[2] |
| Details | |
| Mass | 7.1±0.8[5] M☉ |
| Radius | 123.18+2.84 −8.96[1] R☉ |
| Luminosity | 3,849±234[1] L☉ |
| Temperature | 4,097+158 −47[1] K |
| Rotational velocity (v sin i) | 2.5±1.2[6] km/s |
| Age | 39.8±4.9[5] Myr |
| Other designations | |
| NSV 6164,CD−66° 1385,GC 17959,HD 115211,HIP 64820,HR 5002,SAO 252240[7] | |
| Database references | |
| SIMBAD | data |
HD 115211 is a single[8]star in the southernconstellation ofMusca. It has an orange hue and is faintly visible to the naked eye with anapparent visual magnitude of 4.86.[2] Its distance from Earth is approximately 1,370 light years based onparallax, and it is drifting closer to theSun with aradial velocity of −10 km/s.[1] It has anabsolute magnitude of −2.94.[2]
It is an agingbright giant/supergiant star with astellar classification of K2 Ib-II.[3] It is a suspectedvariable star of unknown type, with a brightness that has been measured ranging from 4.83 down to 4.87.[4] It is an estimated 40 million years old, with 7.1 times themass of the Sun.[5] With the supply of hydrogen exhausted at itscore, it has expanded to 123 times theSun's radius. It is radiating 3,849 times theluminosity of the Sun from its swollenphotosphere at aneffective temperature of 4,097 K.[1]
