Astronomy:Iota1 Muscae
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Short description: Star in the constellation Musca
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Musca |
| Right ascension | 13h 25m 07.11942s[1] |
| Declination | −74° 53′ 16.1512″[1] |
| Apparent magnitude (V) | 5.05[2] |
| Characteristics | |
| Evolutionary stage | red clump[3] |
| Spectral type | K0 III[4] |
| U−B color index | +1.01[2] |
| B−V color index | +1.11[2] |
| Astrometry | |
| Radial velocity (Rv) | 27.5±0.8[5] km/s |
| Proper motion (μ) | RA: −107.80[6] mas/yr Dec.: −132.25[6] mas/yr |
| Parallax (π) | 14.7839 ± 0.1205[1] mas |
| Distance | 221 ± 2 ly (67.6 ± 0.6 pc) |
| Absolute magnitude (MV) | +0.88[7] |
| Details | |
| Mass | 1.5[8] M☉ |
| Radius | 11.78+0.22 −0.47[1] R☉ |
| Luminosity | 56.5±0.6[1] L☉ |
| Surface gravity (log g) | 2.64[9] cgs |
| Temperature | 4,610+96 −42[1] K |
| Metallicity [Fe/H] | −0.10[8] dex |
| Rotational velocity (v sin i) | 4.27[9] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
ι1 Muscae, Latinised as Iota1 Muscae, is a solitary[11] star in the southern constellation of Musca, near the southern constellation border with Chamaeleon. It is visible to the naked eye as a dim, orange-hued star with an apparent visual magnitude is 5.05.[2] The star is located around 222 light-years distant from the Sun based on parallax, and is drifting further away with a radial velocity of 27.5 km/s.[5]
This object is an aging giant star with a stellar classification of K0III;[4] a star that has used up its core hydrogen and is cooling and expanding. At present it has nearly 12[1] times the girth of the Sun. The star is radiating 56.5 times the luminosity of the Sun from its swollen photosphere at an effective temperature of about 4,610 K.[1]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.
- ↑ 2.0 2.1 2.2 2.3 Johnson, H. L. et al. (1966), "UBVRIJKL photometry of the bright stars", Communications of the Lunar and Planetary Laboratory 4 (99): 99, Bibcode: 1966CoLPL...4...99J.
- ↑ Laney, C. D.; Joner, M. D.; Pietrzyński, G. (2012). "A new Large Magellanic Cloud K-band distance from precision measurements of nearby red clump stars". Monthly Notices of the Royal Astronomical Society 419 (2): 1637. doi:10.1111/j.1365-2966.2011.19826.x. Bibcode: 2012MNRAS.419.1637L.
- ↑ 4.0 4.1 Houk, Nancy; Cowley, A. P. (1979), Michigan catalogue of two-dimensional spectral types for the HD stars, 1, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan, Bibcode: 1978mcts.book.....H.
- ↑ 5.0 5.1 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, doi:10.1051/0004-6361/201219219, A61, Bibcode: 2012A&A...546A..61D.
- ↑ 6.0 6.1 van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, doi:10.1051/0004-6361:20078357, Bibcode: 2007A&A...474..653V.
- ↑ Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters 38 (5): 331, doi:10.1134/S1063773712050015, Bibcode: 2012AstL...38..331A.
- ↑ 8.0 8.1 Charbonnel, C.; Lagarde, N.; Jasniewicz, G.; North, P. L.; Shetrone, M.; Krugler Hollek, J.; Smith, V. V.; Smiljanic, R. et al. (2020). "Lithium in red giant stars: Constraining non-standard mixing with large surveys in the Gaia era". Astronomy and Astrophysics 633: A34. doi:10.1051/0004-6361/201936360. Bibcode: 2020A&A...633A..34C.
- ↑ 9.0 9.1 Perdelwitz, V.; Trifonov, T.; Teklu, J. T.; Sreenivas, K. R.; Tal-Or, L. (2024). "Analysis of the public HARPS/ESO spectroscopic archive. Ca II H&K time series for the HARPS radial velocity database". Astronomy and Astrophysics 683. doi:10.1051/0004-6361/202348263. Bibcode: 2024A&A...683A.125P.
- ↑ "iot02 Mus". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=iot02+Mus.
- ↑ 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, doi:10.1111/j.1365-2966.2008.13596.x, Bibcode: 2008MNRAS.389..869E.
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