| |
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Capricornus |
| Right ascension | 20h11m 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] |
| Astrometry | |
| Proper motion (μ) | RA: 4[2] mas/yr Dec.: −6[2] mas/yr |
| Other designations | |
R Cap, BD−14 5663, GC 28001, SAO 163323, 2MASS J20111833-1416033[2] | |
| Database references | |
| SIMBAD | data |
R Capricorni (R Cap) is a star in the constellationofCapricornus.[2] It has an 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]
|
| |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| |||||||||||||
| Stars |
| ||||||||||||
| |||||||||||||
| |||||||||||||
| Galaxies |
| ||||||||||||
| |||||||||||||
 | This variable star–related article is a stub. You can help Wikipedia by expanding it. |
