R Virginis

R Virginis
	; The visual band light curve of R Virginis, from AAVSO data
Observation data; Epoch J2000 Equinox J2000
Constellation	Virgo
Right ascension	12h 38m 29.9338s
Declination	+06° 59′ 19.0256″
Apparent magnitude (V)	6.1 - 12.1
Characteristics
Spectral type	M3.5-7e
U−B color index	1.22
B−V color index	1.56
Variable type	Mira
Astrometry
Radial velocity (Rv)	−26.60 km/s
Proper motion (μ)	RA: −32.283±0.248 mas/yr ; Dec.: 4.483±0.186 mas/yr
Parallax (π)	1.8884 ± 0.0946 mas
Distance	1,730 ± 90 ly ; (530 ± 30 pc)
Details
Radius	88 R☉
Luminosity	839 L☉
Temperature	3,320 K
Other designations
	R Virginis, TYC 295-2-1, AG+07° 1658, HD 109914, BD+07°2561, DO 3264, HIP 61667, GC 17212, HR 4808, RAFGL 4157, SAO 119509
Database references
SIMBAD	data

R Virginis is a Mira variable in the constellation Virgo. Located approximately 530 parsecs (1,700 ly) distant, it varies between magnitudes 6.1 and 12.1 over a period of approximately 146 days.^[3] Its variable nature was discovered by Karl Ludwig Harding in 1809.^[7]

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[AAVSO-3] Cite error: The named reference AAVSO was invoked but never defined (see the help page).

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[ubv-5] Cite error: The named reference ubv was invoked but never defined (see the help page).

[pulkovo-6] Cite error: The named reference pulkovo was invoked but never defined (see the help page).

[Zsoldos1994-7] Cite error: The named reference Zsoldos1994 was invoked but never defined (see the help page).

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Observation data Epoch J2000 Equinox J2000
The visual band light curve of R Virginis, from AAVSO data^[1]
Constellation	Virgo
Right ascension	12^h 38^m 29.9338^s^[2]
Declination	+06° 59′ 19.0256″^[2]
Apparent magnitude (V)	6.1 - 12.1^[3]
Characteristics
Spectral type	M3.5-7e^[4]
U−B color index	1.22^[5]
B−V color index	1.56^[5]
Variable type	Mira^[3]
Astrometry

Radial velocity (R_v)	−26.60^[6] km/s
Proper motion (μ)	RA: −32.283±0.248^[2] mas/yr Dec.: 4.483±0.186^[2] mas/yr
Parallax (π)	1.8884 ± 0.0946 mas^[2]
Distance	1,730 ± 90 ly (530 ± 30 pc)

Details

Radius	88^[2] `R`_☉
Luminosity	839^[2] `L`_☉
Temperature	3,320^[2] K

Other designations
R Virginis, TYC 295-2-1, AG+07° 1658, HD 109914, BD+07°2561, DO 3264, HIP 61667, GC 17212, HR 4808, RAFGL 4157, SAO 119509
Database references
SIMBAD	data