S Persei
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This infobox, "Template:Starbox begin", is from Wikipedia. The list of its authors can be seen in its edit history page. The data in this infobox may not agree or state what Wikipedia states. |
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| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Perseus |
| Right ascension | 2h 22m 51.70928s |
| Declination | 58° 31′ 11.4476″ |
| Apparent magnitude (V) | 9.23 (7.9 - 12.0) |
| Characteristics | |
| Spectral type | M4.5I (M3Iae - M7) |
| B−V color index | 2.65 |
| Variable type | SRc |
| Astrometry | |
| Radial velocity (Rv) | -39.71 km/s |
| Proper motion (μ) | RA: −0.49 ± 0.23 mas/yr Dec.: −1.19 ± 0.20 mas/yr |
| Parallax (π) | 0.413 ± 0.017 mas |
| Distance | 7,900 ± 300 ly (2,420 ± 100 pc) |
| Absolute magnitude (MV) | −6.36 (at mV 9.23) |
| Details | |
| Mass | 20 M☉ |
| Radius | 1,212 ± 124, 780 - 1,230 R☉ |
| Diameter | 1,212 ± 124, 780 - 1,230 D☉ |
| Luminosity | 86,000 - 186,000 L☉ |
| Surface gravity (log g) | 0.0 cgs |
| Temperature | 3,000–3,600 K |
| Other designations | |
| Database references | |
| SIMBAD | data |
S Persei is a red supergiant located near the Double Cluster in Perseus, north of the cluster NGC 869.
References
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