R Serpentis
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Serpens |
| Right ascension | 15h 50m 41.7346s |
| Declination | +15° 08′ 01.105″ |
| Apparent magnitude (V) | 7.10 |
| Characteristics | |
| Spectral type | M5-8e |
| B−V color index | 1.39 |
| Variable type | Mira |
| Astrometry | |
| Radial velocity (Rv) | 23.80 km/s |
| Proper motion (μ) | RA: -1.31 mas/yr Dec.: -35.73 mas/yr |
| Parallax (π) | 4.78 ± 1.84 mas |
| Distance | approx. 700 ly (approx. 210 pc) |
| Absolute magnitude (MV) | 0.50 |
| Other designations | |
| Database references | |
| SIMBAD | data |
R Serpentis (R Ser) is a Mira variable type star in the constellation Serpens. It ranges between apparent magnitude 5.1 and 14.4, and spectral types M5IIIe to M9e, over a period of 356 days.[1]
References
- ↑ Watson, Christopher (4 January 2010). "R Serpentis". AAVSO Website. American Association of Variable Star Observers. Retrieved 22 May 2014.
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