| absmag_v = −3.92[10]
}}{{Starbox detail
| source =
| mass = {{Val|7.8|0.1}}[11]
| radius = 15[12]
| luminosity = 2,753[13]
| temperature = 9,400[14]
| gravity = 2.3[14]
| metal_fe = −0.20[14]
| rotational_velocity = 10[17]
| age_myr = {{Val|39.8|4.9}}[11]
}}{{Starbox catalog
| names = {{odlist | B=ξ1 Sgr | F=36 Sgr | BD=−20° 5339 | FK5= | HD=175687 | HIP=93057 | HR=7145 | SAO=187498 }}[19]
}}{{Starbox reference
| Simbad = ksi01+Sgr
}}{{Starbox end}}Xi1 Sagittarii (ξ1 Sagittarii) is a solitary,[20] blue-white hued star in the zodiac constellation of Sagittarius. It is visible to the naked eye with an apparent visual magnitude of +5.06.[3] Based upon a small annual parallax shift of 1.58 mas as seen from Earth,[ this system is located roughly 2,100 light years from the Sun.]
This is a massive supergiant star[12] with a stellar classification of B9/A0 Ib.[4] With an estimated 7.8[11] times the mass of the Sun and an age of about 40[11] million years it has depleted the hydrogen at its core, causing it to expand to about 15 times the Sun's radius.[12] It is radiating 2,753[13] times the Sun's luminosity from its photosphere at an effective temperature of about 9,400 K.[14]
References
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8. ^1 2 3 4 {{citation | display-authors=1 | last1=Tetzlaff | first1=N. | last2=Neuhäuser | first2=R. | last3=Hohle | first3=M. M. | title=A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun | journal=Monthly Notices of the Royal Astronomical Society | volume=410 | issue=1 | pages=190–200 | date=January 2011 | doi=10.1111/j.1365-2966.2010.17434.x | bibcode=2011MNRAS.410..190T | arxiv=1007.4883 | postscript=. }}
9. ^1 2 3 4 {{citation | title=New UBVRI photometry for 900 supergiants | journal=Astrophysical Journal Supplement Series | last1=Fernie | first1=J. D. | postscript=. | volume=52 | pages=7 | year=1983 | bibcode=1983ApJS...52....7F | doi=10.1086/190856 }}
10. ^1 {{cite simbad | title=ksi01 Sgr | accessdate=2017-07-05 | postscript=. }}