Gliese 747AB

Gliese 747AB[1]
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Lyra
Right ascension 19h 05m 43.7s
Declination +32° 26' 42"
Apparent magnitude (V) 11.7 / 12.1
Characteristics
Spectral type M3 / M5
Astrometry
Radial velocity (Rv) -31 km/s
Proper motion (μ) RA: 1221 mas/yr
Dec.: 1101 mas/yr
Parallax (π) 123 ± 4 mas
Distance 26.5 ± 0.9 ly
(8.1 ± 0.3 pc)
Absolute magnitude (MV) 12.0 / ?
Details
Mass ? M
Radius ? R
Surface gravity (log g) ?
Luminosity ? L
Temperature ? K
Metallicity ?
Rotation ?
Age ? years
Orbit
Companion Gliese 747 B
Period (P) 5 yr
Semimajor axis (a) 0.65"
Other designations
LHS 471, CSI+32 3326 2, LP 336-6, USNO-B1.0 1225-00412171, 17 Lyr C, GCRV 11590, LSPM J1907+3232, USNO 351, KUI 90A, G 207-16, LTT 15603, Zkh 286, AC +33 57637-0, GJ 4103, 2MASS J19074283+3232396, AC +32 54804-0, GJ 747 A, NLTT 47437, ADS 12061 C, LFT 1451, PLX 4459, Ci 20 1130, L 1499-28, UCAC2 43304362. GJ 747 B, ADS 12061 P, Zkh 287, KUI 90B, CSI+32 3326 5.
Database references
SIMBAD data

Gliese 747AB is a red dwarf star located in Lyra near 17 Lyrae (19h 05m 43.7s +32° 26' 42"). Also named 17 Lyrae C or Kuiper 90, it is a binary system with a period of 5 years, and a small angular separation (0.35").

See also

  1. ^ "Simbad Query Result". Simbad. http://simbad.u-strasbg.fr/simbad/sim-id?protocol=html&Ident=HD+167965&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id. Retrieved October 16, 2007. 

Components

NAME Right ascension Declination Apparent magnitude (V) Spectral type Database references
Gliese 747 B 01h 09m 42.2s +32° 32' 54 12.1 M5 Simbad