astro.wikisort.org - StarOmega Virginis (ω Vir, ω Virginis) is a solitary[2] star in the zodiac constellation Virgo. It has an apparent visual magnitude of +5.22,[2] which is bright enough to be faintly visible to the naked eye. Based upon an annual stellar parallax shift of 6.56 milliarcseconds,[1] it is located about 500 light years from the Sun.
Star in the constellation Virgo
ω Virginis
Location of ω Virginis (circled) |
Observation data Epoch J2000 Equinox J2000 |
Constellation |
Virgo |
Right ascension |
11h 38m 27.60727s[1] |
Declination |
+08° 08′ 03.4663″[1] |
Apparent magnitude (V) |
+5.22[2] |
Characteristics |
Spectral type |
M4 III[2] |
U−B color index |
+1.63[3] |
B−V color index |
+1.60[3] |
Astrometry |
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|
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Radial velocity (Rv) | +5.13±0.52[4] km/s |
Proper motion (μ) | RA: −3.89[1] mas/yr Dec.: +5.30[1] mas/yr |
Parallax (π) | 6.56 ± 0.36 mas[1] |
Distance | 500 ± 30 ly (152 ± 8 pc) |
Absolute magnitude (MV) | +0.2[5] |
|
Details |
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|
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Radius | 70[6] R☉ |
Luminosity | 1,515[7] L☉ |
Surface gravity (log g) | 0.8[5] cgs |
Temperature | 3,490[7] K |
Metallicity [Fe/H] | −0.08[5] dex |
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Other designations |
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ω Vir, 1 Virginis, BD+08°2532, FK5 2932, HD 101153, HIP 56779, HR 4483, SAO 118965 [8] |
Database references |
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SIMBAD | data |
This is a red giant star with a stellar classification of M4 III.[2] It is a semiregular variable with a brightness that varies over an amplitude of 0.m28 with periods of 30 and 275 days.[9] After evolving away from the main sequence it has expanded to around 70 times the solar radius,[6] and now shines with 1,515 times the luminosity of the Sun.[7] The effective temperature of the outer atmosphere is 3,490 K.[7]
References
- van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357, S2CID 18759600.
- Eggleton, P. P.; Tokovinin, A. A. (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.
- Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data, SIMBAD, Bibcode:1986EgUBV........0M.
- Famaey, B.; et al. (2009). "Spectroscopic binaries among Hipparcos M giants,. I. Data, orbits, and intrinsic variations". Astronomy and Astrophysics. 498 (2): 627–640. arXiv:0901.0934. Bibcode:2009A&A...498..627F. doi:10.1051/0004-6361/200810698. S2CID 18739721.
- Smith, V.V.; Lambert, D.L. (1986), "The chemical composition of red giants. II - Helium burning and the s-process in the MS and S stars", Astrophysical Journal, 311: 843–863, Bibcode:1986ApJ...311..843S, doi:10.1086/164823
- 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.
- McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–57, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x, S2CID 118665352.
- "* ome Vir". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2016-09-19.
{{cite web}}
: CS1 maint: postscript (link) - Glass, I. S.; Van Leeuwen, F. (2007), "Semiregular variables in the solar neighbourhood", Monthly Notices of the Royal Astronomical Society, 378 (4): 1543–1549, arXiv:0704.3150, Bibcode:2007MNRAS.378.1543G, doi:10.1111/j.1365-2966.2007.11903.x, S2CID 14332208.
Virgo constellation |
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Stars (list) | |
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Star clusters | |
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Nebulae | |
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Galaxies | Messier | |
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NGC | |
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Other |
- A1689-zD1
- Abell 1835 IR1916
- Arp 240 (NGC 5257 and NGC 5258)
- Arp 271 (NGC 5426 and NGC 5427)
- BR 1202-0725
- 3C 273
- 3C 279
- 3C 298
- 4C 04.42
- Eyes Galaxies
- GR 8
- IC 1011
- IC 1101
- IC 3258
- IC 3328
- IRAS 12212+0305
- IRAS 13197−1627
- M60-UCD1
- Markarian 50
- Markarian 1318
- PG 1216+069
- PG 1244+026
- PG 1254+047
- PG 1307+085
- PG 1416−129
- PG 1426+015
- PKS 1148-001
- PKS 1167+014
- PKS 1217+023
- PKS 1229−021
- PKS 1302−102
- PKS 1335−127
- PKS 1402+044
- PKS 1405−076
- QSO B1208+1011
- QSO B1243−072
- QSO B1246−057
- QSO B1331+170
- RXJ1242−11
- SMM J14011+0252
- UM 448
- UM 461
- UM 462
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Galaxy clusters | |
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Other |
- GRB 930131
- GRB 030328
- GRB 050408
- GRB 050801
- GRB 080310
- North Polar Spur
- SN 1960F
- SN 1981B
- SN 1990B
- SN 1990N
- SN 1991T
- SN 1991bg
- SN 1994D
- SN 1999br
- SN 2002cx
- SN 2007bi
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На других языках
- [en] Omega Virginis
[es] Omega Virginis
Omega Virginis (ω Vir / 1 Virginis / HD 101153)[1] es una estrella en la constelación de Virgo de magnitud aparente +5,24. Se encuentra a 496 años luz del Sistema Solar.[2]
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