Astronomy:RT Normae
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Short description: R Coronae Borealis variable star in the constellation Norma
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Norma |
| Right ascension | 16h 24m 18.65396s[3] |
| Declination | −59° 20′ 38.6476″ [3] |
| Apparent magnitude (V) | 9.8-14.7 [4] |
| Characteristics | |
| Spectral type | C (R)[4] |
| Variable type | R CrB variable |
| Astrometry | |
| Parallax (π) | 27.29 ± 17.10[3] mas |
| Distance | approx. 120 ly (approx. 40 pc) |
| Details | |
| Mass | <0.55[5] M☉ |
| Temperature | 7000 K[5] K |
| Other designations | |
HIP 80365, CPD-59 6719 | |
| Database references | |
| SIMBAD | data |
RT Normae is an R Coronae Borealis type variable star in the constellation Norma. It has a baseline magnitude of 9.8, dropping down to 14.7 at its minima.[4]
It has less than 55% the mass of the Sun and an effective (surface) temperature of around 7000 K.[5]
References
- ↑ "ASAS All Star Catalogue". The All Sky Automated Survey. http://www.astrouw.edu.pl/asas/?page=aasc.
- ↑ "ASAS-SN Variable Stars Database". ASAS-SN. https://asas-sn.osu.edu/variables/lookup.
- ↑ 3.0 3.1 3.2 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. doi:10.1051/0004-6361:20078357. Bibcode: 2007A&A...474..653V. http://www.aanda.org/index.php?option=com_article&access=bibcode&Itemid=129&bibcode=2007A%2526A...474..653VFUL.
- ↑ 4.0 4.1 4.2 Otero, Sebastian Alberto (12 July 2011). "V RT Nor". The International Variable Star Index. http://www.aavso.org/vsx/index.php?view=detail.top&oid=19972. Retrieved 20 May 2015.
- ↑ 5.0 5.1 5.2 Stasińska, G.; Szczerba, R.; Schmidt, M.; Siódmiak, N. (2006). "Post-AGB stars as testbeds of nucleosynthesis in AGB stars". Astronomy and Astrophysics 450 (2): 701. doi:10.1051/0004-6361:20053553. Bibcode: 2006A&A...450..701S.
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