Delta Sextantis
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Sextans |
| Right ascension | 10h 29m 28.70222s[1] |
| Declination | −02° 44′ 20.6862″[1] |
| Apparent magnitude (V) | +5.25[2] |
| Characteristics | |
| Spectral type | B9.5 V[3] |
| U−B color index | −0.12[2] |
| B−V color index | −0.04[2] |
| Astrometry | |
| Radial velocity (Rv) | 18.07±0.96[4] km/s |
| Proper motion (μ) | RA: −48.86[1] mas/yr Dec.: −13.43[1] mas/yr |
| Parallax (π) | 10.13±0.23 mas[1] |
| Distance | 322 ± 7 ly (99 ± 2 pc) |
| Absolute magnitude (MV) | +0.22[5] |
| Details | |
| Mass | 2.6±0.3[6] M☉ |
| Radius | 3.25±0.12[6] R☉ |
| Luminosity | 100±7[6] L☉ |
| Surface gravity (log g) | 3.83±0.07[6] cgs |
| Temperature | 10,139±131[6] K |
| Metallicity [Fe/H] | −0.51[3] dex |
| Rotational velocity (v sin i) | 152[7] km/s |
| Age | 146[8] Myr |
| Other designations | |
| δ Sex, 29 Sextantis, BD−02°3155, FK5 1270, HD 90882, HIP 51362, HR 4116, SAO 137600[9] | |
| Database references | |
| SIMBAD | data |
Delta Sextantis (δ Sex, δ Sextantis) is a solitary[10] star in the equatorial constellation of Sextans. With an annual parallax shift of 10.13 mas,[1] 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.[2] 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;[3] just shy of being a cooler A-type star. It is estimated to have 2.6 times the Sun's mass and 3.25 times the radius of the Sun. It is 146[8] million years old, with a projected rotational velocity of 152[7] km/s. The star radiates 100 times the solar luminosity from its outer atmosphere at an effective temperature of 10,139 K.[6]
References
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- ^ a b c d e f Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). Delta Sextantis' database entry at VizieR.
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
