Nu Capricorni
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Capricornus |
| Right ascension | 20h 20m 39.816s |
| Declination | −12° 45′ 32.69″ |
| 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: +14.130 mas/yr Dec.: −15.123 mas/yr |
| Parallax (π) | 12.1737±0.1597 mas |
| Distance | 268 ± 4 ly (82 ± 1 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 is a star in the southern constellation of Capricornus. It has the proper name Alshat, pronounced /ˈælʃæt/; Nu Capricorni is the Bayer designation. This star is visible to the naked eye with an apparent visual magnitude of +4.76. It is calculated to be a distance of 268 light-years (82 pc) distant from the Sun based on parallax.
Nu Capricorni is 6.6 degrees north of the ecliptic and so is within the margin of occultations of few if any planets but is well within that of the Moon. The celestial latitude of either of the Alpha Capricorni main stars is about 6.93 degrees by comparison.