HD 167257
HD 167257 is a star in the constellation Telescopium, located about 359.2 light-years (110.1 parsecs) from Earth. It has an apparent magnitude of +6.06, allowing it to be viewed with the naked eye under suitable viewing conditions. The stellar classification is B9V, which indicates that it is a main sequence blue-white star. The effective temperature of its chromosphere is 11,000 K,.[2]
| Observation data Epoch J2000 Equinox | |
|---|---|
| Constellation | Telescopium |
| Right ascension | 18h 17m 00.91889s[1] |
| Declination | –51° 04′ 05.7601″[1] |
| Apparent magnitude (V) | 6.06[2] |
| Characteristics | |
| Spectral type | B9V[1][2] |
| B−V color index | -0.06[3] |
| Astrometry | |
| Radial velocity (Rv) | -5.10[1] km/s |
| Proper motion (μ) | RA: 0.66[1] mas/yr Dec.: -9.25[1] mas/yr |
| Parallax (π) | 8.21 ± 0.47[1] mas |
| Distance | 400 ± 20 ly (122 ± 7 pc) |
| Absolute magnitude (MV) | 0.848 [2] |
| Details | |
| Mass | 3.3[2] M☉ |
| Radius | 2.7[2] R☉ |
| Temperature | 11,000[2] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
It has an estimated lifespan of 490 million years and is three times the mass of the Sun. Its end state will probably be a carbon-oxygen white dwarf.[2]
References
- "hd167257", SIMBAD, Centre de Données astronomiques de Strasbourg, retrieved 2015-10-29
- hd167257 - Wolfram|Alpha, WolframAlpha, retrieved 2015-10-29
- Corben, P. M.; Stoy, R. H. (1968). "Photoelectric Magnitudes and Colours for Bright Southern Stars". Monthly Notes of the Astron. Soc. Southern Africa. 27: 11. Bibcode:1968MNSSA..27...11C. Color indices accessed using SIMBAD.
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