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]
| Observation data Epoch J2000.0 ICRS 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 mas[3] |
| Distance | approx. 120 ly (approx. 40 pc) |
| Details | |
| Mass | <0.55[5] M☉ |
| Temperature | 7000 K[5] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
It has less than 55% the mass of the Sun and an effective (surface) temperature of around 7000 K.[5]
References
edit- ^ "ASAS All Star Catalogue". The All Sky Automated Survey. Retrieved 8 December 2021.
- ^ "ASAS-SN Variable Stars Database". ASAS-SN Variable Stars Database. ASAS-SN. Retrieved 6 January 2022.
- ^ a b c 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. S2CID 18759600.
- ^ a b c Otero, Sebastian Alberto (12 July 2011). "V RT Nor". The International Variable Star Index. Retrieved 20 May 2015.
- ^ a b c 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. arXiv:astro-ph/0601504. Bibcode:2006A&A...450..701S. doi:10.1051/0004-6361:20053553. S2CID 12040452.