R Aquilae

R Aquilae

Observation data Epoch J2000      Equinox J2000
Constellation	Aquila
Right ascension	19h 06m 22.2522s
Declination	+08° 13′ 48.006″
Apparent magnitude (V)	7.61
Characteristics
Spectral type	M7IIIev
U−B color index	0.37
B−V color index	1.6
Variable type	Mira variable
Astrometry
Radial velocity (Rv)	32.0 km/s
Proper motion (μ)	RA: 5.18 mas/yr Dec.: -67.05 mas/yr
Parallax (π)	4.73 ± 1.19 mas
Distance	approx. 700 ly (approx. 210 pc)
Absolute magnitude (MV)	8.75
Details
Mass	0.4 M☉
Radius	0.5 R☉
Luminosity	0.04 L☉
Temperature	2,000–3,500 K
Other designations
BD+08 3970, HD 177940, HIP 93820, HR 7243, SAO 124266.
Database references
SIMBAD	data
Data sources:
Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.)

R Aquilae (R Aql) is a variable star in the constellation Aquila.

References

• HR 7243
• Image R Aquilae