17 Lyrae

17 Lyrae AB
Location of 17 Lyrae (circled)
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Lyra
AB
Right ascension 19h 07m 25.58012s[1]
Declination +32° 30′ 6.2599″[1]
Apparent magnitude (V) 5.221[2]
A
Right ascension 19h 07m 25.58s[3]
Declination +32° 30′ 06.3″[3]
Apparent magnitude (V) 5.26[4]
B
Right ascension 19h 07m 25.31s[5]
Declination +32° 30′ 07.5″[5]
Apparent magnitude (V) 9.1[6]
Characteristics
Spectral type F0V[7]
U−B color index +0.044[8]
B−V color index +0.351[8]
Astrometry
A
Proper motion (μ) RA: +114.276[3] mas/yr
Dec.: +18.316[3] mas/yr
Parallax (π)22.8557 ± 0.0782 mas[3]
Distance142.7 ± 0.5 ly
(43.8 ± 0.1 pc)
B
Proper motion (μ) RA: +120.597[5] mas/yr
Dec.: +9.110[5] mas/yr
Parallax (π)22.8407 ± 0.0190 mas[5]
Distance142.8 ± 0.1 ly
(43.78 ± 0.04 pc)
Orbit[9]
PrimaryA
Period (P)42.857 days
Eccentricity (e)0.0
Semi-amplitude (K1)
(primary)		13.10 km/s
Details
A
Mass1.6[9] M☉
Radius2.5[3] R☉
Luminosity16.4[10] L☉
Surface gravity (log g)3.57[8] cgs
Temperature6,887[10] K
Metallicity [Fe/H]0.0[11] dex
Rotational velocity (v sin i)138[10] km/s
Age1.4[11] Gyr
B
Mass0.73[12] M☉
Surface gravity (log g)4.61[12] cgs
Temperature5,266[12] K
Metallicity [Fe/H]−0.46[12] dex
Other designations
17 Lyrae, HR 7261, BD+32°3326, HD 178449, SAO 67835, HIP 93917, GC 26340, CCDM J19075+3231, IDS 19036+3221
Database references
SIMBADdata

17 Lyrae is a multiple star system in the constellation Lyra, 143 light years away from Earth.

  1. ^ a b Cite error: The named reference hipparcos was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference tycho2 was invoked but never defined (see the help page).
  3. ^ a b c d e f Cite error: The named reference dr3a was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference CCDMA was invoked but never defined (see the help page).
  5. ^ a b c d e Cite error: The named reference dr3b was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference CCDMB was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference mk was invoked but never defined (see the help page).
  8. ^ a b c Cite error: The named reference budaj was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference ducati was invoked but never defined (see the help page).
  10. ^ a b c Cite error: The named reference zorec was invoked but never defined (see the help page).
  11. ^ a b Cite error: The named reference trilling was invoked but never defined (see the help page).
  12. ^ a b c d Cite error: The named reference starhorse2 was invoked but never defined (see the help page).