Observation data Epoch J2000.0 Equinox J2000.0 ( 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] |
Astrometry | |
Proper motion (μ) |
RA: 4
[2]
mas/
yr Dec.: −6 [2] mas/ yr |
Other designations | |
Database references | |
SIMBAD | data |
R Capricorni (R Cap) is a star in the constellation of Capricornus. [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]
Observation data Epoch J2000.0 Equinox J2000.0 ( 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] |
Astrometry | |
Proper motion (μ) |
RA: 4
[2]
mas/
yr Dec.: −6 [2] mas/ yr |
Other designations | |
Database references | |
SIMBAD | data |
R Capricorni (R Cap) is a star in the constellation of Capricornus. [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]