R Serpentis
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| Observation data Epoch J2000 |
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| Constellation (pronunciation) |
Serpens |
| Right ascension | 15h 50m 41.7341s |
| Declination | +15° 08' 01.108"' |
| Apparent magnitude (V) | 7.1 |
| Characteristics | |
| Spectral type | M7IIIe |
| U-B color index | 0.39 |
| B-V color index | 1.39 |
| Variable type | Mira Cet type |
| Astrometry | |
| Radial velocity (Rv) | 23.7 km/s |
| Proper motion (μ) | RA: -2.02 mas/yr Dec.: -35.42 mas/yr |
| Parallax (π) | 3.58 ± 1.51 mas |
| Distance | approx. 900 ly (approx. 300 pc) |
| Absolute magnitude (MV) | 8.49 |
| Details | |
| Mass | ? M☉ |
| Radius | ? R☉ |
| Surface gravity (log g) | ? |
| Luminosity | ? L☉ |
| Temperature | ? K |
| Metallicity | ? |
| Rotation | ? |
| Age | ? years |
| Other designations | |
| Database references | |
| SIMBAD | data |
R Serpentis or R Ser is a Mira variable type star.
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