Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Andromeda |
Right ascension | 02h 11m 02.56581s[2] |
Declination | 48° 56′ 45.0634″[2] |
Apparent magnitude (V) | 9.0–11.5[3] |
Characteristics | |
Spectral type | M4e[3] |
B−V color index | 1.607[4] |
Variable type | Semi-regular[3] |
Astrometry | |
Radial velocity (Rv) | −10.0±2.0[5] km/s |
Proper motion (μ) | RA: 10.456(48)[2] mas/yr Dec.: −0.958(56)[2] mas/yr |
Parallax (π) | 1.0950 ± 0.0483 mas[2] |
Distance | 3,000 ± 100 ly (910 ± 40 pc) |
Other designations | |
Database references | |
SIMBAD | data |
RV Andromedae is a variable star in the constellation of Andromeda. It is classified as a semiregular variable pulsating giant star, and varies from an apparent visual magnitude of 11.5 at minimum brightness to a magnitude of 9.0 at maximum brightness, with a period of approximately 168.9 days.[3]
This is one of the Mira variables where mode switching of pulsations have been observed; amplitude and periods have been seen decreasing and subsequently increasing back to values near the previous ones.[6]
aavso
was invoked but never defined (see the help page).Gaia EDR3
was invoked but never defined (see the help page).TYCHO
was invoked but never defined (see the help page).