Delta Sextantis

{{Starbox begin

| name = δ Sextantis

}}

{{Starbox observe

| epoch = J2000.0

| equinox = J2000.0 (ICRS)

| constell = Sextans

| ra = {{RA|10|29|28.70222}}

| dec = {{DEC|−02|44|20.6862}}

| appmag_v = +5.25

}}

{{Starbox character

| class = B9.5 V

| b-v = −0.04

| u-b = −0.12

| r-i =

| variable =

}}

{{Starbox astrometry

| radial_v = {{Val|18.07|0.96}}

| prop_mo_ra = −48.86

| prop_mo_dec = −13.43

| parallax = 10.13

| p_error = 0.23

| parallax_footnote =

| absmag_v = +0.22

}}

{{Starbox detail

| mass = 2.58

| radius = 2.3

| luminosity = 82

| temperature = {{Val|10899|371|fmt=commas}}

| gravity = {{Val|3.99|0.14}}

| metal_fe = −0.51

| rotational_velocity = 152

| rotation =

| age_myr = 146

}}

{{Starbox catalog

| names = {{odlist | B=δ Sex | F=29 Sextantis | BD=−02°3155 | FK5=1270 | HD=90882 | HIP=51362 | HR=4116 | SAO=137600 }}

}}

{{Starbox reference

| Simbad = del+Sex

}}

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

{{reflist|refs=

{{citation | title=Validation of the new Hipparcos reduction | last1=van Leeuwen | first1=F. | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | date=2007 | arxiv=0708.1752 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 | s2cid=18759600 | postscript=.}}

{{citation | last1=Pasinetti Fracassini | first1=L. E. | last2=Pastori | first2=L. | last3=Covino | first3=S. | last4=Pozzi | first4=A. | title=Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics | journal=Astronomy and Astrophysics | display-authors=1 | volume=367 | pages=521–524 | date=February 2001 | issue=2 | doi=10.1051/0004-6361:20000451 | bibcode=2001A&A...367..521P | arxiv=astro-ph/0012289 | s2cid=425754 | postscript=.}}

{{citation | title=Abundance analysis of late B stars. Evidence for diffusion and against weak stellar winds | last1=Hempel | first1=M. | last2=Holweger | first2=H. | journal=Astronomy and Astrophysics | postscript=. | volume=408 | pages=1065–1076 | date=September 2003 | issue=3 | doi=10.1051/0004-6361:20030889 | bibcode=2003A&A...408.1065H | doi-access=free}}

{{citation | last1=Eggleton | first1=P. P. | last2=Tokovinin | first2=A. A. | title=A catalogue of multiplicity among bright stellar systems | journal=Monthly Notices of the Royal Astronomical Society | volume=389 | issue=2 | pages=869–879 | date=September 2008 | doi=10.1111/j.1365-2966.2008.13596.x | doi-access=free | bibcode=2008MNRAS.389..869E | display-authors=1 | arxiv=0806.2878 | s2cid=14878976 | postscript=.}}

{{citation | display-authors=1 | last1=McDonald | first1=I. | last2=Zijlstra | first2=A. A. | last3=Boyer | first3=M. L. | title=Fundamental Parameters and Infrared Excesses of Hipparcos Stars | journal=Monthly Notices of the Royal Astronomical Society | volume=427 | issue=1 | pages=343–57 | date=2012 | bibcode=2012MNRAS.427..343M | arxiv=1208.2037 | doi=10.1111/j.1365-2966.2012.21873.x | doi-access=free | s2cid=118665352 | postscript=.}}

{{citation | last1=David | first1=Trevor J. | last2=Hillenbrand | first2=Lynne A. | title=The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets | journal=The Astrophysical Journal | volume=804 | issue=2 | pages=146 | year=2015 | bibcode=2015ApJ...804..146D | doi=10.1088/0004-637X/804/2/146 | arxiv=1501.03154 | s2cid=33401607 | postscript=.}}

{{citation | title=Extracting Radial Velocities of A- and B-type Stars from Echelle Spectrograph Calibration Spectra | last1=Becker | first1=Juliette C. | last2=Johnson | first2=John Asher | last3=Vanderburg | first3=Andrew | last4=Morton | first4=Timothy D. | journal=The Astrophysical Journal Supplement Series | volume=217 | issue=2 | id=29 | pages=13 | date=April 2015 | doi=10.1088/0067-0049/217/2/29 | bibcode=2015ApJS..217...29B | arxiv=1503.03874 | s2cid=33968873 | display-authors=1 | postscript=.}}

{{citation | display-authors=1 | last1=Royer | first1=F. | last2=Zorec | first2=J. | last3=Gómez | first3=A. E. | title=Rotational velocities of A-type stars. III. Velocity distributions | journal=Astronomy and Astrophysics | volume=463 | issue=2 | pages=671–682 | date=February 2007 | doi=10.1051/0004-6361:20065224 | bibcode=2007A&A...463..671R | arxiv=astro-ph/0610785 | s2cid=18475298 | postscript=.}}

{{citation | last1=Mermilliod | first1=J.-C. | title=Compilation of Eggen's UBV data, transformed to UBV (unpublished) | journal=SIMBAD | date=1986 | bibcode=1986EgUBV........0M | postscript=.}}

{{citation | title=XHIP: An extended hipparcos compilation | last1=Anderson | first1=E. | last2=Francis | first2=Ch. | journal=Astronomy Letters | volume=38 | issue=5 | pages=331 | year=2012 | bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015 | arxiv=1108.4971 | s2cid=119257644 | postscript=.}}

{{cite simbad | title=del Sex | accessdate=2016-12-14 | postscript=.}}

}}

Sextantis, Delta

Category:Sextans

Category:B-type main-sequence stars

Category:Durchmusterung objects