Nu Capricorni
Location of ν Capricorni (circled), to the ESE of the naked eye double, α Capricorni | |
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Capricornus |
| Right ascension | 20h 20m 39.81562s |
| Declination | −12° 45′ 32.6844″ |
| Apparent magnitude (V) | +4.76 |
| Characteristics | |
| Spectral type | B9 IV or B9.5 V |
| U−B color index | −0.11 |
| B−V color index | −0.04 |
| Astrometry | |
| Radial velocity (Rv) | −1.00 km/s |
| Proper motion (μ) | RA: +14.74 mas/yr Dec.: −14.32 mas/yr |
| Parallax (π) | 12.88±0.27 mas |
| Distance | 253 ± 5 ly (78 ± 2 pc) |
| Absolute magnitude (MV) | +0.32 |
| Details | |
| Mass | 2.37 M☉ |
| Radius | 3.04±0.08 R☉ |
| Luminosity | 89±4 L☉ |
| Surface gravity (log g) | 3.88±0.08 cgs |
| Temperature | 10,200±220 K |
| Metallicity [Fe/H] | −0.15±0.04 dex |
| Rotational velocity (v sin i) | 24 km/s |
| Age | 115 Myr |
| Other designations | |
| Alshat, ν Cap, Nu Cap, 8 Cap, BD−13°5642, HD 193432, HIP 100310, HR 7773, SAO 163468, ADS 13714, WDS J20207-1246A | |
| Database references | |
| SIMBAD | data |
Nu Capricorni or ν Capricorni, formally named Alshat /ˈælʃæt/, is a star in the southern constellation of Capricornus. It is visible to the naked eye with an apparent visual magnitude of +4.76.