R Capricorni
Observation data ICRS )
| |
---|---|
Constellation | Capricornus
|
Right ascension | 20h 11m 18.39s[2] |
Declination | −14° 16′ 04.4″[2] |
Apparent magnitude (V) | 9.4 to 14.9[3] |
Characteristics | |
Spectral type | Cev[2] |
Variable type | M[3] |
mas/yr | |
Other designations | |
Database references | |
SIMBAD | data |
R Capricorni (R Cap) is a
apparent visual magnitude which varies between 9.4 and 14.9.[3] A mira variable and ageing red giant, it is in the asymptotic giant branch stage of its lifespan.[4]
R Capricorni is too far from earth for its parallax to be measured effectively; Guandalini and Cristallo calculated the luminosity of Mira variables based on their periods. Using a period of 345.13 days, they calculated the absolute magnitude of R Capricorni to be -4.58.[4]
R Capricorni is losing mass at rate of 2.8*10−6M☉/year.[5]
References
- ^ "Download Data". aavso.org. AAVSO. Retrieved 1 October 2021.
- ^ a b c d e f g V* R Cap -- Variable Star of Mira Cet type, database entry, SIMBAD. Accessed on line November 9, 2009.
- ^ a b c R Cap, database entry, The combined table of GCVS Vols I-III and NL 67-78 with improved coordinates, General Catalogue of Variable Stars Archived 2017-06-20 at the Wayback Machine, Sternberg Astronomical Institute, Moscow, Russia. Accessed on line November 9, 2009.
- ^ S2CID 54918450. A120.
- S2CID 119004841