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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.

References

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2. ^ Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", SIMBAD, Bibcode:1986EgUBV........0M.
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4. Becker, Juliette C.; et al. (April 2015), "Extracting Radial Velocities of A- and B-type Stars from Echelle Spectrograph Calibration Spectra", The Astrophysical Journal Supplement Series, 217 (2): 13, arXiv:1503.03874, Bibcode:2015ApJS..217...29B, doi:10.1088/0067-0049/217/2/29, S2CID 33968873, 29.
5. Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015, S2CID 119257644.
6. ^ David, Trevor J.; Hillenbrand, Lynne A. (2015), "The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets", The Astrophysical Journal, 804 (2): 146, arXiv:1501.03154, Bibcode:2015ApJ...804..146D, doi:10.1088/0004-637X/804/2/146, S2CID 33401607.
7. ^ Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics", Astronomy and Astrophysics, 367 (2): 521–524, arXiv:astro-ph/0012289, Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451, S2CID 425754.
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9. ^ Royer, F.; et al. (February 2007), "Rotational velocities of A-type stars. III. Velocity distributions", Astronomy and Astrophysics, 463 (2): 671–682, arXiv:astro-ph/0610785, Bibcode:2007A&A...463..671R, doi:10.1051/0004-6361:20065224, S2CID 18475298.
10. "del Sex". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2016-12-14.{{cite web}}: CS1 maint: postscript (link)
11. Eggleton, P. P.; et al. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.

v t e Constellation of Sextans
List of stars in Sextans Sextans in Chinese astronomy
Stars	Bayer α β γ δ ε Flamsteed 3 4 5 6 7 9 12 13 14 16 17 18 19 20 21 23 24 25 26 27 31 32 33 34 35 36 39 40 41 Variable S T Y RW SW VY HR 3879 3901 3907 3915 3959 4000 4034 4059 4060 4085 4092 4109 4122 4224 4233 4240 HD 85461 86081 86341 90057 92788 93396 Other BD−08°2823 FIRST J102347.6+003841 Gliese 382 Gliese 393 LHS 292 PG 1026+002 PG 1047+003 PSR J0952–0607 TOI-561 WASP-43
Exoplanets BD-08°2823 b c HD 86081 b HD 92788 b KELT-11b WASP-43b TOI-561 b
Galaxies	NGC 2974 3044 3110 3115 3156 3169 3341 Other Baby Boom Galaxy CID-42 Cosmos Redshift 7 HD1 LAE J095950.99+021219.1 PGC 29820 REBELS-25 Sextans A Sextans B Sextans Dwarf Spheroidal AT2018hyz
Galaxy clusters CL J1001+0220 Hyperion proto-supercluster
Category

• Bayer objects
• Sextans
• B-type main-sequence stars
• Durchmusterung objects
• Flamsteed objects
• Henry Draper Catalogue objects
• Hipparcos objects
• Bright Star Catalogue objects