R Octantis
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Octans |
| Right ascension | 05h 26m 06.19562s[1] |
| Declination | −86° 23′ 17.7741″[1] |
| Apparent magnitude (V) | 6.4-13.2[2] |
| Characteristics | |
| Spectral type | M5.5e |
| Variable type | Mira |
| Astrometry | |
| Radial velocity (Rv) | 46.00 ± 4.7 km/s |
| Proper motion (μ) | RA: 1.26 ± 0.61[1] mas/yr Dec.: 28.97 ± 0.94[1] mas/yr |
| Parallax (π) | 1.66 ± 0.73[1] mas |
| Distance | approx. 2,000 ly (approx. 600 pc) |
| Details | |
| Luminosity | 7764[3] L☉ |
| Temperature | 3161[3] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
R Octantis is a Mira variable star located in the southern constellation of Octans. It shines with a luminosity 9304 times that of the Sun and has a surface temperature of 2571 K.[3]
References
- 1 2 3 4 5 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 - ↑ Otero, Sebastian (26 April 2011). "R Octantis". AAVSO Website. American Association of Variable Star Observers. Retrieved 21 April 2016.
- 1 2 3 McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (2012). "Fundamental Parameters and Infrared Excesses of Hipparcos Stars". Monthly Notices of the Royal Astronomical Society. 427 (1): 343–57. arXiv:1208.2037. Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x.
- ↑ "V* R Octantis -- Variable Star of Mira Ceti type". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 21 April 2016.
This article is issued from Wikipedia - version of the 4/21/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.