Mu2 Chamaeleontis

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μ2 Chamaeleontis
Observation data
Epoch J2000      Equinox J2000
Constellation Chamaeleon
Right ascension 10h 04m 07.1704s[1]
Declination −81° 33′ 55.775″[1]
Apparent magnitude (V) 6.610[2]
Spectral type G6/8 III[3]
U−B color index +0.53[4]
B−V color index +0.92[4]
Variable type Suspected[5]
Radial velocity (Rv)0.34 ± 4.66[6] km/s
Proper motion (μ) RA: −49.76[7] mas/yr
Dec.: 52.69[7] mas/yr
Parallax (π)4.36 ± 0.25[1] mas
Distance750 ± 40 ly
(230 ± 10 pc)
Absolute magnitude (MV)0.59[8]
Luminosity58.64[9] L
Temperature5037[9] K
Rotational velocity (v sin i)2.7 ± 1.3[6] km/s
Other designations
CD−80° 365, HD 88351, HIP 49326, HR 3997, SAO 258561[5]
Database references

Mu2 Chamaeleontis2 Cha) is a star located in the constellation Chamaeleon. Mu2 Chamaeleontis is also known as HR 3997, and HD 88351.[5]

Mu2 Chamaeleontis is an G-type giant star[3] with an effective temperature of around 5000 K.[9] It has an apparent visual magnitude of 6.610,[2] an absolute magnitude of 0.59.[8] It is located 750 light-years, or 230 parsecs from the Sun, based on the star's parallax.[7] Mu2 Chamaeleontis is suspected to be a variable star.


  1. ^ a b c Gaia Collaboration (2016). "Gaia Data Release 1". Astronomy & Astrophysics. 595: A2. arXiv:1609.04172. Bibcode:2016A&A...595A...2G. doi:10.1051/0004-6361/201629512.
  2. ^ a b Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H.
  3. ^ a b Houk, N.; Cowley, A. P. (1975). "University of Michigan Catalogue of two-dimensional spectral types for the HD stars. Volume I. Declinations -90°.0 to -53°.0". Michigan Catalogue of two-dimensional spectral types for the HD stars. 1.
  4. ^ a b Johnson, H. L. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99. Bibcode:1966CoLPL...4...99J.
  5. ^ a b c "HD 88351". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 19 August 2017.
  6. ^ a b de Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (2014). "A catalog of rotational and radial velocities for evolved stars. V. Southern stars". Astronomy & Astrophysics. 561: A126. arXiv:1312.3474. Bibcode:2014A&A...561A.126D. doi:10.1051/0004-6361/201220762.
  7. ^ a b c van Leeuwen, F.; et al. (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.
  8. ^ a b 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.
  9. ^ a b c McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (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.