Delta Sextantis

δ 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]
Distance322 ± 7 ly
(99 ± 2 pc)
Absolute magnitude (MV)+0.22[5]
Details
Mass2.58[6] M☉
Radius2.3[7] R☉
Luminosity82[8] L☉
Surface gravity (log g)3.99±0.14[6] cgs
Temperature10,899±371[6] K
Metallicity [Fe/H]−0.51[3] dex
Rotational velocity (v sin i)152[9] km/s
Age146[6] Myr
Other designations
δ Sex, 29 Sextantis, BD−02° 3155, FK5 1270, HD 90882, HIP 51362, HR 4116, SAO 137600[10]
Database references
SIMBADdata

Delta Sextantis (δ Sex, δ Sextantis) is a solitary[11] 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[6] times the Sun's mass and 2.3[7] times the radius of the Sun. It is 146[6] million years old, with a projected rotational velocity of 152[9] km/s. The star radiates 82[8] times the solar luminosity from its outer atmosphere at an effective temperature of 10,899 K.[6]

  1. ^ a b c d e f Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference Mermilliod1986 was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference Hempel2003 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Becker2015 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  6. ^ a b c d e f g Cite error: The named reference David2015 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference PasinettiFracassini2001 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Mcdonald2012 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference Royer2007 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).