S Microscopii

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.^[3] 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.^[5]

S Microscopii

The visual band light curve of S Microscopii, from AAVSO data[1]
Observation data Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation	Microscopium
Right ascension	21h 26m 44.1040s[2]
Declination	−29° 51′ 04.680″[2]
Apparent magnitude (V)	7.8 - 14.8
Characteristics
Spectral type	M3e-M5.5[3]
Astrometry
Parallax (π)	0.5137±0.1623 mas[4]
Distance	approx. 6,000 ly (approx. 1,900 pc)
Other designations
S Microscopii, CD−30° 18609, HD 204045
Database references
SIMBAD	data