RT Normae

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RT Normae
RTNorLightCurve.png
A visual band light curve for RT Normae, plotted from ASAS [1] and ASAS-SN [2] data
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 [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

  1. ↑ "ASAS All Star Catalogue". The All Sky Automated Survey. Retrieved 8 December 2021.
  2. ↑ "ASAS-SN Variable Stars Database". ASAS-SN Variable Stars Database. ASAS-SN. Retrieved 6 January 2022.
  3. 1 2 3 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.
  4. 1 2 3 Otero, Sebastian Alberto (12 July 2011). "V RT Nor". The International Variable Star Index. Retrieved 20 May 2015.
  5. 1 2 3 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.
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