Beta Piscium
 Location of β Piscium (circled) |
|
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Pisces |
| Right ascension | 23h 03m 52.61349s |
| Declination | +03° 49′ 12.1662″ |
| Apparent magnitude (V) | +4.40 |
| Characteristics | |
| Spectral type | B6Ve |
| U−B color index | −0.48 |
| B−V color index | −0.12 |
| Variable type | Suspected |
| Astrometry | |
| Radial velocity (Rv) | 0.0 ± 0.6 km/s |
| Proper motion (μ) |
RA: 11.76 mas/yr Dec.: −9.85 mas/yr |
| Parallax (π) | 7.99 ± 0.22mas |
| Distance | 410 ± 10 ly (125 ± 3 pc) |
| Details | |
| Mass | 4.7 M☉ |
| Radius | 3.6 R☉ |
| Surface gravity (log g) | 4.0 cgs |
| Temperature | 15500 K |
| Rotational velocity (v sin i) | 90 ± 15 km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
Beta Piscium (β Piscium), also known by its traditional name Fum al Samakah, is a star in the zodiac constellation of Pisces. Its apparent magnitude is 4.40, meaning it can be faintly seen with the naked eye. Based on parallax estimates made by the Hipparcos spacecraft, the system is located about 410 light-years (125 parsecs) away.
Beta Piscium is a Be star, a special class of B-type stars with emission lines in their spectra. With a spectral type of B6Ve its mass is estimated to be about 4.7 M☉, and its radius is about 3.6 M☉. It is suspected to be a variable star.
...
Wikipedia