astro.wikisort.org - StarMu Lupi (μ Lup) is a system of three or four[7] stars in the southern constellation of Lupus. It is visible to the naked eye with an apparent visual magnitude of 4.29[2] and lies roughly 340 light-years from the Sun.
Mu Lupi
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) |
Constellation |
Lupus |
Right ascension |
15h 18m 32.02296s[1] |
Declination |
−47° 52′ 30.9957″[1] |
Apparent magnitude (V) |
4.29[2] |
Characteristics |
Spectral type |
B8 Ve[3] |
U−B color index |
−0.41[2] |
B−V color index |
−0.03[2] |
Astrometry |
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Radial velocity (Rv) | +14.90±1.78[4] km/s |
Proper motion (μ) | RA: −29.59[1] mas/yr Dec.: −35.07[1] mas/yr |
Parallax (π) | 9.72 ± 0.71 mas[1] |
Distance | 340 ± 20 ly (103 ± 8 pc) |
Absolute magnitude (MV) | −0.57[5] |
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Details[3] |
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Mass | 4.42±0.20 M☉ |
Luminosity | 603 L☉ |
Surface gravity (log g) | 3.80±0.10 cgs |
Temperature | 13,470±500 K |
Rotational velocity (v sin i) | 280±20 km/s |
Age | 112 Myr |
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Other designations |
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Database references |
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SIMBAD | data |
Two of the components of this system, A and B, form a pair with an angular separation of 1.1 arcseconds. As of 2014, no orbit has been published. Component C lies at an angular separation of 22.6 arcseconds from the AB pair, and may be a common proper motion companion. It is an A-type main-sequence star with a classification of A2 V. A fourth component at an angular separation of 6.15 arcseconds from component A, may be a brown dwarf.[7]
References
- 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.
- Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data, SIMBAD, Bibcode:1986EgUBV........0M.
- Levenhagen, R. S.; Leister, N. V. (2006), "Spectroscopic analysis of southern B and Be stars", Monthly Notices of the Royal Astronomical Society, 371 (1): 252–262, arXiv:astro-ph/0606149, Bibcode:2006MNRAS.371..252L, doi:10.1111/j.1365-2966.2006.10655.x, S2CID 16492030.
- de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics, 546: 14, arXiv:1208.3048, Bibcode:2012A&A...546A..61D, doi:10.1051/0004-6361/201219219, S2CID 59451347, A61.
- Hubrig, S.; et al. (June 2001), "Search for low-mass PMS companions around X-ray selected late B stars", Astronomy and Astrophysics, 372: 152–164, arXiv:astro-ph/0103201, Bibcode:2001A&A...372..152H, doi:10.1051/0004-6361:20010452, S2CID 17507782.
- "* mu. Lup -- Be Star". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-03-08.
{{cite web}}
: CS1 maint: postscript (link) - Veramendi, M. E.; González, J. F. (July 2014), "Spectroscopic study of early-type multiple stellar systems. II. New binary subsystems", Astronomy & Astrophysics, 567: 10, arXiv:1405.1084, Bibcode:2014A&A...567A..35V, doi:10.1051/0004-6361/201423736, S2CID 21711755, A35.
Constellation of Lupus |
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Stars | Bayer | |
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Flamsteed | |
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Variable | |
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HR |
- 5362
- 5364
- 5377
- 5380
- 5401
- 5412
- 5413
- 5426
- 5427
- 5444
- 5450 (a)
- 5457
- 5458
- 5494
- 5495 (b)
- 5498
- 5509
- 5556 (c)
- 5559
- 5566
- 5580
- 5595
- 5607
- 5615
- 5617
- 5625
- 5636
- 5637
- 5642
- 5650
- 5651 (e)
- 5653
- 5663
- 5667
- 5668
- 5682
- 5688
- 5689
- 5696
- 5724 (k)
- 5736
- 5738
- 5742
- 5751
- 5753
- 5767
- 5773
- 5784
- 5790
- 5807
- 5821
- 5822
- 5825 (g)
- 5837 (h)
- 5846
- 5860
- 5862
- 5864
- 5893
- 5916
- 5918
- 5923
- 5929
- 5935
- 5943
- 5952
- 5956
- 5967
- 5970
- 5974
- 5975
- 5991
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HD |
- 125809
- 126093
- 126525
- 126759
- 128154
- 129624
- 133399
- 133469
- 133518
- 135430
- 135468
- 136607
- 137785
- 137919
- 138395
- 142527
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Other | |
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 Category |
На других языках
[de] My Lupi
μ Lupi (My Lupi, abgekürzt μ Lup) ist ein Sternsystem im Wolf, einem kleinen Sternbild östlich des Centaurus. Das System gehört zur Scorpius-Centaurus-OB-Assoziation.
- [en] Mu Lupi
[ru] Мю Волка
Мю Волка (лат. μ Lupi) — кратная звезда в созвездии Волка на расстоянии (вычисленном из значения параллакса) приблизительно 336 световых лет (около 103 парсеков) от Солнца. Возраст звезды определён как около 112 млн лет[13].
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