R Apodis
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Apus |
| Right ascension | 14h 57m 52.98366s[1] |
| Declination | −76° 39′ 45.5556″[1] |
| Apparent magnitude (V) | 5.38 |
| Characteristics | |
| Spectral type | K4 III |
| U−B color index | 1.7 |
| B−V color index | 1.45 |
| Astrometry | |
| Radial velocity (Rv) | -31.2 km/s |
| Proper motion (μ) | RA: -68.69[1] mas/yr Dec.: -15.71[1] mas/yr |
| Parallax (π) | 8.71 ± 0.25[1] mas |
| Distance | 370 ± 10 ly (115 ± 3 pc) |
| Absolute magnitude (MV) | −0.22 ± 0.16[2] |
| Details | |
| Mass | 1.18 ± 0.20[2] M☉ |
| Radius | 26.3 ± 2.6[2] R☉ |
| Luminosity | 1000 L☉ |
| Surface gravity (log g) | 1.64 ± 0.11[2] cgs |
| Temperature | 4,158[2] K |
| Metallicity [Fe/H] | −0.07[2] dex |
| Age | 5.14 ± 2.43[2] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
R Apodis (R Aps) is a star in the constellation Apus.
R Apodis is an orange K-type giant with an apparent magnitude of +5.38. It is approximately 370 light years from Earth. It was earlier suspected to be a variable star which explains it variable star designation R Apodis. Now it is confirmed as a non-variable.[3]
References
- 1 2 3 4 5 van Leeuwen, F. (November 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 - 1 2 3 4 5 6 7 da Silva, L.; et al. (November 2006), "Basic physical parameters of a selected sample of evolved stars", Astronomy and Astrophysics, 458 (2): 609–623, arXiv:astro-ph/0608160, Bibcode:2006A&A...458..609D, doi:10.1051/0004-6361:20065105
- ↑ "R Aps". The International Variable Star Index. AAVSO – American Association of Variable Star Observers. Retrieved 10 April 2016.
This article is issued from Wikipedia - version of the 4/10/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.