  | |
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Chamaeleon [1] |
| Right ascension | 08h 45m 55.14862s [2] |
| Declination | −79° 30′ 15.7456″ [2] |
| Apparent magnitude (V) | 5.77±0.01 [3] |
| Characteristics | |
| Spectral type | K5 III [4] |
| U−B color index | +1.96 [5] |
| B−V color index | +1.60 [5] |
| Astrometry | |
| Radial velocity (Rv) | 7±0.4 [6] km/s |
| Proper motion (μ) | RA: −27.042 [2] mas/yr Dec.: +81.026 [2] mas/yr |
| Parallax (π) | 5.3327±0.049 mas [2] |
| Distance | 612 ± 6 ly (188 ± 2 pc) |
| Absolute magnitude (MV) | −0.13 [1] |
| Details | |
| Mass | 1.78±0.09 [7] M☉ |
| Radius | 53.1±2.7 [8] R☉ |
| Luminosity | 950+160 −60 [2] L☉ |
| Surface gravity (log g) | 1.18 [9] cgs |
| Temperature | 3,989±122 [10] K |
| Metallicity [Fe/H] | +0.27 [9] dex |
| Rotational velocity (v sin i) | 3±1.1 [11] km/s |
| Other designations | |
| 11 G. Chamaeleontis [12] , CPD−79°352, GC 12194, HD 76236, HIP 43012, HR 3543, SAO 256552 [13] | |
| Database references | |
| SIMBAD | data |
HD 76236, also designated as HR 3543 or rarely 11 G. Chamaeleontis, [12] is a solitary star [14] located in the southern circumpolar constellation Chamaeleon. It is faintly visible to the naked eye as an orange-hued star with an apparent magnitude of 5.77. [3] Based on parallax measurements from the Gaia satellite, the object is estimated to be 612 light years away. [2] Currently, it is receding with a heliocentric radial velocity of 7 km/s . [6] At its current distance, HD 76236's brightness is diminished by 0.39 magnitudes due to interstellar dust. [15] It has an absolute magnitude of −0.13. [1]
This is an evolved red giant with a stellar classification K5 III. [4] It has 1.78 times the mass of the Sun [7] and an enlarged radius of 53.1 R☉. [8] It radiates 950 times the luminosity of the Sun [2] from its photosphere at an effective temperature of 3,989 K . [10] HD 76236 has an iron abundance nearly twice of the Sun's, [9] making it metal enriched. It spins modestly with a projected rotational velocity of 3 km/s . An infrared excess has been detected around HD 76236, indicating that the star may have a circumstellar disk. [16] [17]
