HD 27274
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Dorado |
| Right ascension | 04h 15m 56.90154s[1] |
| Declination | −53° 18′ 35.3067″[1] |
| Apparent magnitude (V) | 7.63[2] |
| Characteristics | |
| Spectral type | K4.5 Vk:[3] |
| U−B color index | +1.08[2] |
| B−V color index | +1.12[2] |
| Astrometry | |
| Radial velocity (Rv) | −23.4±0.3[4] km/s |
| Proper motion (μ) | RA: +784.529 mas/yr[1] Dec.: +396.695 mas/yr[1] |
| Parallax (π) | 76.6638±0.0146 mas[1] |
| Distance | 42.544 ± 0.008 ly (13.044 ± 0.002 pc) |
| Absolute magnitude (MV) | +7.06[5] |
| Details | |
| Mass | 0.73±0.09[6] M☉ |
| Radius | 0.70±0.05[6] R☉ |
| Luminosity | 19.6±0.5%[1] L☉ |
| Surface gravity (log g) | 4.64[7] cgs |
| Temperature | 4,602±80[7] K |
| Metallicity [Fe/H] | +0.16±0.01[7] dex |
| Rotational velocity (v sin i) | 1[8] km/s |
| Age | 4.5[9] Gyr |
| Other designations | |
| CD−53° 889, CPD−53° 672, GC 5176, GJ 167, HD 27274, HIP 19884, SAO 233456[10] | |
| Database references | |
| SIMBAD | data |
| ARICNS | data |
HD 27274, also known as Gliese 167, is a solitary,[11] orange hued star located in the southern constellation Dorado. It has an apparent magnitude of 7.63,[2] making it readily visible in binoculars, but not to the naked eye. Based on parallax measurements from the Gaia spacecraft, the star is known to be located 42.5 light-years (13.02 parsecs) away from the Solar System[1] However, it is drifting closer with a heliocentric radial velocity of −23 km/s. At its current distance, HD 27274 is dimmed down by 0.05 magnitudes due to interstellar dust.[12]
HD 27274 has a stellar classification of K4.5 Vk:,[3] indicating that it is a K-type main-sequence star with interstellar absorption features. However, there is uncertainty behind the classification. At present it has 73% the mass of the Sun and 70% of its radius.[6] It has an effective temperature of 4,602 K,[7] but its small size yields a luminosity only 19.6% that of the Sun.[1] HD 27274 is metal enriched, having an iron abundance 44.6% above solar levels.[7] The star spins with a projected rotational velocity of 1 km/s,[8] and is estimated to be 4.5 billion years old.[9] This is similar to the Sun's current age (4.6 Gyr).
References
[edit | edit source]- ^ 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 c d 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).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ 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 c d e 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).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
