Delta Sextantis
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Sextans |
| Right ascension | 10h 29m 28.70222s |
| Declination | −02° 44′ 20.6862″ |
| Apparent magnitude (V) | +5.25 |
| Characteristics | |
| Spectral type | B9.5 V |
| U−B color index | −0.12 |
| B−V color index | −0.04 |
| Astrometry | |
| Radial velocity (Rv) | 18.07±0.96 km/s |
| Proper motion (μ) | RA: −48.86 mas/yr Dec.: −13.43 mas/yr |
| Parallax (π) | 10.13±0.23 mas |
| Distance | 322 ± 7 ly (99 ± 2 pc) |
| Absolute magnitude (MV) | +0.22 |
| Details | |
| Mass | 2.58 M☉ |
| Radius | 2.3 R☉ |
| Luminosity | 82 L☉ |
| Surface gravity (log g) | 3.99±0.14 cgs |
| Temperature | 10,899±371 K |
| Metallicity [Fe/H] | −0.51 dex |
| Rotational velocity (v sin i) | 152 km/s |
| Age | 146 Myr |
| Other designations | |
| δ Sex, 29 Sextantis, BD−02°3155, FK5 1270, HD 90882, HIP 51362, HR 4116, SAO 137600 | |
| Database references | |
| SIMBAD | data |
Delta Sextantis (δ Sex, δ Sextantis) is a solitary star in the equatorial constellation of Sextans. With an annual parallax shift of 10.13 mas, it lies at a distance of around 322 light years from the Sun. This star is faintly visible to the naked eye, having an apparent visual magnitude of +5.25. According to the Bortle scale, that means it can be viewed from dark suburban skies.
This is a B-type main sequence star with a stellar classification of B9.5 V; just shy of being a cooler A-type star. It is estimated to have 2.6 times the Sun's mass and 2.3 times the radius of the Sun. It is 146 million years old, with a projected rotational velocity of 152 km/s. The star radiates 82 times the solar luminosity from its outer atmosphere at an effective temperature of 10,899 K.