Eta Microscopii

Eta Microscopii
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Microscopium
Right ascension 21h 06m 25.51918s[1]
Declination −41° 23′ 09.4753″[1]
Apparent magnitude (V) 5.53[2]
Characteristics
Spectral type K3 III[3]
U−B color index +1.50[2]
B−V color index +1.35[2]
Astrometry
Radial velocity (Rv)+11.0±4.3[4] km/s
Proper motion (μ) RA: +28.01[1] mas/yr
Dec.: −12.00[1] mas/yr
Parallax (π)4.58 ± 0.35[1] mas
Distance710 ± 50 ly
(220 ± 20 pc)
Absolute magnitude (MV)−1.13[5]
Details
Luminosity457[6] L☉
Temperature4,400[6] K
Other designations
η Mic, CD−41° 14379, FK5 3684, GC 29461, HD 200702, HIP 104177, HR 8069, SAO 230523[7]
Database references
SIMBADdata

η Microscopii, Latinised as Eta Microscopii, is a solitary,[8] orange-hued star in the constellation Microscopium. Its apparent magnitude is 5.53. Located around 710 light-years distant, it shines with a luminosity approximately 457 times that of the Sun and has a surface temperature of 4,400 K.[9]

References

  1. 1 2 3 4 5 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.
  2. 1 2 3 Drilling, J. S. (February 1973), "Photoelectric UBV photometry of late-type stars in two regions at high galactic latitude", Astronomical Journal, 78: 44–46, Bibcode:1973AJ.....78...44D, doi:10.1086/111370.
  3. ↑ Houk, Nancy (1978), Michigan catalogue of two-dimensional spectral types for the HD stars, 2, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode:1978mcts.book.....H.
  4. ↑ 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.
  5. ↑ 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.
  6. 1 2 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.
  7. ↑ "eta Mic". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-08-12.
  8. ↑ 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.
  9. ↑ 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.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.