D Centauri
D Centauri (D Cen) is a double star in the constellation Centaurus. The system has a combined apparent magnitude of +5.31 and is approximately 570 light years from Earth.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 12h 14m 02.697s[1] |
| Declination | −45° 43′ 26.10″[1] |
| Apparent magnitude (V) | +5.31 |
| Characteristics | |
| Spectral type | K3III |
| U−B color index | +1.59 |
| B−V color index | +1.43 |
| Variable type | none |
| Astrometry | |
| Radial velocity (Rv) | +7 km/s |
| Proper motion (μ) | RA: -35.35 ± 0.37[1] mas/yr Dec.: 5.56 ± 0.30[1] mas/yr |
| Parallax (π) | 5.71 ± 0.54[1] mas |
| Distance | 570 ± 50 ly (180 ± 20 pc) |
| Absolute magnitude (MV) | −0.88 |
| Other designations | |
| Database references | |
| SIMBAD | data |
The system is classified as an orange K-type giant. The brighter component has an apparent magnitude of +5.31, while the apparent magnitude of the optical companion is +6.8. The two stars are separated by 2.9 arcseconds.
References
- van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
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