  | |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Virgo |
| Right ascension | 11h 45m 17.04027s [1] |
| Declination | +08° 15′ 29.2150″ [1] |
| Apparent magnitude (V) | 4.83 [2] |
| Characteristics | |
| Spectral type | A4 V [3] |
| U−B color index | +0.10 [2] |
| B−V color index | +0.17 [2] |
| Astrometry | |
| Radial velocity (Rv) | −0.5 [4] km/s |
| Proper motion (μ) |
RA: +60.08
[1]
mas/
yr Dec.: −24.50 [1] mas/ yr |
| Parallax (π) | 26.73 ± 0.25 mas [1] |
| Distance | 122 ± 1
ly (37.4 ± 0.3 pc) |
| Absolute magnitude (MV) | +1.98 [5] |
| Details | |
| Mass | 1.93 [6] M☉ |
| Radius | 1.5 [7] R☉ |
| Luminosity | 12.6 [8] L☉ |
| Surface gravity (log g) | 4.31 [6] cgs |
| Temperature | 8,172 [8] K |
| Rotational velocity (v sin i) | 130 [3] km/s |
| Age | 480 [9] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
Xi Virginis (ξ Vir, ξ Virginis) is a solitary [11] star in the zodiac constellation of Virgo. It is bright enough to be seen with the naked eye, having an apparent visual magnitude of 4.83. [2] The distance to this star is about 122 light years, as determined from parallax readings. [1]
Xi Virginis is an A-type main sequence star with a stellar classification of A4 V. [3] It has an estimated age of 480 [9] million years and is spinning rapidly with a projected rotational velocity of 130 km/s. [3] It has about 150% [7] the Sun's radius and shines with 12.6 [8] times the luminosity of the Sun.
- ^ a b c d e f van Leeuwen, F. (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.
- ^ a b c d Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data. SIMBAD, Bibcode: 1986EgUBV........0M.
- ^ a b c d Abt, Helmut A.; Morrell, Nidia I. (July 1995), "The Relation between Rotational Velocities and Spectral Peculiarities among A-Type Stars", Astrophysical Journal Supplement, 99: 135, Bibcode: 1995ApJS...99..135A, doi: 10.1086/192182.
- ^ Wilson, R. E. (1953), "General Catalogue of Stellar Radial Velocities", Carnegie Institute Washington D.C. Publication, Bibcode: 1953GCRV..C......0W.
- ^ 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.
- ^ a b 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.
- ^ a b Pasinetti Fracassini, L. E.; et al. (2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics", Astronomy & Astrophysics, 367 (2): 521–24, arXiv: astro-ph/0012289, Bibcode: 2001A&A...367..521P, doi: 10.1051/0004-6361:20000451, S2CID 425754.
- ^ a b c 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.
- ^ a b Vican, Laura (June 2012), "Age Determination for 346 Nearby Stars in the Herschel DEBRIS Survey", The Astronomical Journal, 143 (6): 135, arXiv: 1203.1966, Bibcode: 2012AJ....143..135V, doi: 10.1088/0004-6256/143/6/135, S2CID 118539505.
- ^ "ksi Vir -- Star", SIMBAD Astronomical Database, Centre de Données astronomiques de Strasbourg, retrieved 2016-09-08.
- ^ 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.
| |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Virgo |
| Right ascension | 11h 45m 17.04027s [1] |
| Declination | +08° 15′ 29.2150″ [1] |
| Apparent magnitude (V) | 4.83 [2] |
| Characteristics | |
| Spectral type | A4 V [3] |
| U−B color index | +0.10 [2] |
| B−V color index | +0.17 [2] |
| Astrometry | |
| Radial velocity (Rv) | −0.5 [4] km/s |
| Proper motion (μ) |
RA: +60.08
[1]
mas/
yr Dec.: −24.50 [1] mas/ yr |
| Parallax (π) | 26.73 ± 0.25 mas [1] |
| Distance | 122 ± 1
ly (37.4 ± 0.3 pc) |
| Absolute magnitude (MV) | +1.98 [5] |
| Details | |
| Mass | 1.93 [6] M☉ |
| Radius | 1.5 [7] R☉ |
| Luminosity | 12.6 [8] L☉ |
| Surface gravity (log g) | 4.31 [6] cgs |
| Temperature | 8,172 [8] K |
| Rotational velocity (v sin i) | 130 [3] km/s |
| Age | 480 [9] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
Xi Virginis (ξ Vir, ξ Virginis) is a solitary [11] star in the zodiac constellation of Virgo. It is bright enough to be seen with the naked eye, having an apparent visual magnitude of 4.83. [2] The distance to this star is about 122 light years, as determined from parallax readings. [1]
Xi Virginis is an A-type main sequence star with a stellar classification of A4 V. [3] It has an estimated age of 480 [9] million years and is spinning rapidly with a projected rotational velocity of 130 km/s. [3] It has about 150% [7] the Sun's radius and shines with 12.6 [8] times the luminosity of the Sun.
- ^ a b c d e f van Leeuwen, F. (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.
- ^ a b c d Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data. SIMBAD, Bibcode: 1986EgUBV........0M.
- ^ a b c d Abt, Helmut A.; Morrell, Nidia I. (July 1995), "The Relation between Rotational Velocities and Spectral Peculiarities among A-Type Stars", Astrophysical Journal Supplement, 99: 135, Bibcode: 1995ApJS...99..135A, doi: 10.1086/192182.
- ^ Wilson, R. E. (1953), "General Catalogue of Stellar Radial Velocities", Carnegie Institute Washington D.C. Publication, Bibcode: 1953GCRV..C......0W.
- ^ 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.
- ^ a b 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.
- ^ a b Pasinetti Fracassini, L. E.; et al. (2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics", Astronomy & Astrophysics, 367 (2): 521–24, arXiv: astro-ph/0012289, Bibcode: 2001A&A...367..521P, doi: 10.1051/0004-6361:20000451, S2CID 425754.
- ^ a b c 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.
- ^ a b Vican, Laura (June 2012), "Age Determination for 346 Nearby Stars in the Herschel DEBRIS Survey", The Astronomical Journal, 143 (6): 135, arXiv: 1203.1966, Bibcode: 2012AJ....143..135V, doi: 10.1088/0004-6256/143/6/135, S2CID 118539505.
- ^ "ksi Vir -- Star", SIMBAD Astronomical Database, Centre de Données astronomiques de Strasbourg, retrieved 2016-09-08.
- ^ 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.
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