S Microscopii

S Microscopii
Observation data; Epoch J2000.0 Equinox J2000.0 (ICRS)
Constellation	Microscopium
Right ascension	21h 26m 44.1040s[1]
Declination	−29° 51′ 04.680″[1]
Apparent magnitude (V)	7.8 - 14.8
Characteristics
Spectral type	M3e-M5.5[2]
Astrometry
Parallax (π)	0.5137 ± 0.1623[3] mas
Distance	approx. 6,000 ly ; (approx. 1,900 pc)
Other designations
	S Microscopii, CD−30° 18609, HD 204045
Database references
SIMBAD	data

S Microscopii is a star in the constellation Microscopium. It is a red giant star of spectral type M3e-M5.5 that is also a Mira variable, with an apparent magnitude ranging between 7.4 and 14.8 over 210 days.[2] The Astronomical Society of Southern Africa in 2003 reported that observations of S Microscopii were very urgently needed as data on its light curve was incomplete.[4]

References

"V* S Mic". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 20 March 2015.
Otero, Sebastian Alberto (12 April 2011). "S Microscopii". AAVSO Website. American Association of Variable Star Observers. Retrieved 20 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.
Cooper, Tim (2003). "Presidential address: Amateur Observations - Successes and Opportunities". Monthly Notes of the Astronomical Society of Southern Africa. 62: 234–40. Bibcode:2003MNSSA..62..234C.

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[SIMBAD-1] "V* S Mic". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 20 March 2015.

[AAVSOS-2] Otero, Sebastian Alberto (12 April 2011). "S Microscopii". AAVSO Website. American Association of Variable Star Observers. Retrieved 20 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.

[4] Cooper, Tim (2003). "Presidential address: Amateur Observations - Successes and Opportunities". Monthly Notes of the Astronomical Society of Southern Africa. 62: 234–40. Bibcode:2003MNSSA..62..234C.