astro.wikisort.org - Star11 Boötis is a star in the northern constellation of Boötes, located 333 light years away from the Sun. It is near the lower limit of visibility to the naked eye, appearing as a dim, white-hued star with an apparent visual magnitude of 6.23.[2] This body is moving closer to the Earth with a heliocentric radial velocity of −24 km/s.[4]
High proper motion white-hued star in the constellation Boötes
11 Boötis
Observation data Epoch J2000.0 Equinox J2000.0 |
Constellation |
Boötes |
Right ascension |
14h 01m 10.48139s[1] |
Declination |
+27° 23′ 11.7476″[1] |
Apparent magnitude (V) |
6.23[2] |
Characteristics |
Spectral type |
A7 III[3] |
B−V color index |
0.193±0.004[2] |
Astrometry |
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Radial velocity (Rv) | −24.0±4.3[4] km/s |
Proper motion (μ) | RA: −79.512[1] mas/yr Dec.: 18.491[1] mas/yr |
Parallax (π) | 9.8089 ± 0.0827 mas[1] |
Distance | 333 ± 3 ly (101.9 ± 0.9 pc) |
Absolute magnitude (MV) | 1.44[2] |
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Details |
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Mass | 1.67[5] M☉ |
Luminosity | 22.11[2] L☉ |
Surface gravity (log g) | 3.93[5] cgs |
Temperature | 7,997±272[5] K |
Rotational velocity (v sin i) | 123[6] km/s |
Age | 328[5] Myr |
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Other designations |
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Database references |
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SIMBAD | data |
Properties
It has a stellar classification of A7 III,[3] matching an evolved A-type giant star. The star is 328[5] million years old with a projected rotational velocity of 123 km/s.[6] It has 1.67[5] times the mass of the Sun and is radiating 22[2] times the Sun's luminosity from its photosphere at an effective temperature of 7,997 K.[5]
References
- Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- 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.
- "11 Boo". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved April 28, 2019.
- Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.
- 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.
- Royer, F.; et al. (October 2002). "Rotational velocities of A-type stars in the northern hemisphere. II. Measurement of v sin i". Astronomy and Astrophysics. 393: 897–911. arXiv:astro-ph/0205255. Bibcode:2002A&A...393..897R. doi:10.1051/0004-6361:20020943. S2CID 14070763.
Constellation of Boötes |
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На других языках
- [en] 11 Boötis
[ru] 11 Волопаса
11 Волопаса (лат. 11 Boötis, HD 122405) — двойная звезда в созвездии Волопаса на расстоянии приблизительно 333 световых лет (около 102 парсеков) от Солнца. Видимая звёздная величина звезды — +6,221m[2].
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