U Microscopii

U Microscopii
	; The visual band light curve of U Microscopii, from AAVSO data
Observation data; Epoch J2000 Equinox J2000
Constellation	Microscopium
Right ascension	20h 29m 15.77460s
Declination	−40° 25′ 01.3084″
Apparent magnitude (V)	7.0 - 14.4
Characteristics
Spectral type	M5e-M7e
Variable type	Mira
Astrometry
Radial velocity (Rv)	−54.00 km/s
Proper motion (μ)	RA: −13.68 mas/yr ; Dec.: −24.38 mas/yr
Parallax (π)	1.5546±0.1456 mas
Distance	2,100 ± 200 ly ; (640 ± 60 pc)
Details
Luminosity	7,900 L☉
Temperature	2,995 K
Other designations
	U Microscopii, HIP 101063, HD 194814, CD−40°13888
Database references
SIMBAD	data

U Microscopii is a Mira variable star in the constellation Microscopium. It ranges from magnitude 7 to 14.4 over a period of 334 days.^[4] The Astronomical Society of Southern Africa in 2003 reported that observations of U Microscopii were very urgently needed as data on its light curve was incomplete.^[9]

Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...

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Observation data Epoch J2000 Equinox J2000
The visual band light curve of U Microscopii, from AAVSO data^[1]
Constellation	Microscopium
Right ascension	20^h 29^m 15.77460^s^[2]
Declination	−40° 25′ 01.3084″^[2]
Apparent magnitude (V)	7.0 - 14.4 ^[3]
Characteristics
Spectral type	M5e-M7e^[4]
Variable type	Mira^[3]
Astrometry

Radial velocity (R_v)	−54.00^[5] km/s
Proper motion (μ)	RA: −13.68^[2] mas/yr Dec.: −24.38^[2] mas/yr
Parallax (π)	1.5546±0.1456 mas^[6]
Distance	2,100 ± 200 ly (640 ± 60 pc)

Details

Luminosity	7,900^[7] `L`_☉
Temperature	2,995^[8] K

Other designations
U Microscopii, HIP 101063, HD 194814, CD−40°13888
Database references
SIMBAD	data

U Microscopii

References

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