Back ۱۷ شلیاق Persian 17 Лиры Russian 17 Lyrae Swedish 渐台增三 Chinese

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).

Developed by StudentB