17 Lyrae

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**17 Lyrae A / 17 Lyrae B^[1]^[2]**
Observation data Epoch J2000.0
Constellation (pronunciation)	Lyra
Right ascension	19h 7m 25.5807s / 19h 7m 24.8s
Declination	+32° 30' 6.258" / +32° 30' 6"
Apparent magnitude (V)	5.229 / 9.1
Characteristics
Spectral type	F0V / ?
U-B color index	+0.05 / ?
B-V color index	+0.38 / ?
Astrometry
Radial velocity (R_v)	4.0 / -12.88 km/s
Proper motion (μ)	RA: 123.23 / ? mas/yr Dec.: 32.08 / ? mas/yr
Parallax (π)	24.64 ± 0.54 mas
Distance	132 ± 3 ly (40.6 ± 0.9 pc)
Other designations
17 Lyrae, HR 7261, BD+32°3326, HD 178449, SAO 67835, HIP 93917, GC 26340, GSC 02644-02411, CCDM J19075+3231, IDS 19036+3221
Database references
SIMBAD	data

17 Lyrae is a binary star system in the constellation Lyra, approximately 132 light years away from Earth. The main star, 17 Lyrae A, is a 5th magnitude white star of the spectral type F0V, meaning it has a surface temperature of about 7,500 kelvins. It is a dwarf star, like our Sun, yet brighter and hotter.^[1] Its companion, 17 Lyrae B, is a 9th magnitude star of an unknown spectral type.^[2] There was once thought to be a third star in the system, 17 Lyrae C, until it was evident that the star's parallax and proper motions were too different for it to be part of the system.^[3]