T Microscopii

T Microscopii
Observation data; Epoch J2000 Equinox J2000
Constellation	Microscopium
Right ascension	20h 27m 55.18840s[1]
Declination	−28° 15′ 39.8035″[1]
Apparent magnitude (V)	6.74 - 8.11 [2]
Characteristics
Spectral type	M6-M8IIIe[2]
Variable type	Mira
Astrometry
Proper motion (μ)	RA: −4.682 ± 0.594[3] mas/yr ; Dec.: 12.562 ± 0.433[3] mas/yr
Parallax (π)	5.1811 ± 0.3864[3] mas
Distance	630 ± 50 ly ; (190 ± 10 pc)
Other designations
	T Microscopii, HIP 100935, HD 194676, SAO 189308, CD−28° 16682
Database references
SIMBAD	data

T Microscopii is a semiregular variable star in the constellation Microscopium. It ranges from magnitude 6.74 to 8.11 over a period of 352 days.[2] Located around 700 light-years distant, it shines with a luminosity 7708 times that of the Sun and has a surface temperature of 2856 K.[4]

References

van Leeuwen, F. (2007). "Validation of the New Hipparcos Reduction". Astronomy and Astrophysics. 474 (2): 653–64. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.
Otero, Sebastian Alberto (20 June 2011). "T Microscopii". AAVSO Website. American Association of Variable Star Observers. Retrieved 24 March 2015.
Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
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.

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[vanLeeuwen2007-1] van Leeuwen, F. (2007). "Validation of the New Hipparcos Reduction". Astronomy and Astrophysics. 474 (2): 653–64. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.

[AAVSOT-2] Otero, Sebastian Alberto (20 June 2011). "T Microscopii". AAVSO Website. American Association of Variable Star Observers. Retrieved 24 March 2015.

[Gaia-DR2-3] Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.

[Mcdonald-4] 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.