Astronomy
Constellations - Lyra - 5eps2Lyr (Double Double (7054))

 
Identification Data
Common NameDouble Double (7054)
ConstellationLyra
Star Name5eps2Lyr
Skymap Number18440267
Henry Draper (HD) Number173608
Harvard Revised (HR) Number7054
SAO Number67315
Durchmusterung (DM) NumberBD+39 3510
Washington Double Stars (WDS) Number
18443+3940
Positional Data
Position and Proper Motion (PPM) Number81726
Right Ascension (RA) J200018h 44m 22.983s
Declination (Dec) J2000+39° 36' 46.083"
Position Uncertainty0.0142s
Proper Motion in RA (J2000)/cos(Dec)+0.00062
Proper Motion in Dec (J2000)+0.069167
Radial Velocity-024.4km s-1
Trigonometric Parallax+0.02034s
Trigonometric Parallax Uncertainty0.00077s
GCI Unit Vector in X (J2000)0.148257
GCI Unit Vector in Y (J2000)-0.755970
GCI Unit Vector in Z (J2000)0.637596
Galactic Longitude68.80°
Galactic Latitude
18.17°
Observational Data
Observed Visual Magnitude (V)5.38
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.007
Observed B Magnitude5.61
Observed B-V Colour+0.230
Observed B Magnitude or (B-V) Magnitude Uncertainty0.009
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude5.4
Observed Photographic Magnitude5.5
Morgan Keenan (MK) Spectral TypeF0Vn
One-Dimensional Spectral ClassA5
Position Angle86
Year of Observation1992. AD

Data Source
SKY2000 - Master Star Catalog - Star Catalog Database, Version 2
    Sande C.B., Warren Jr. W.H., Tracewell D.A., Home A.T., Miller A.C.
    (Goddard Space Flight Center, Flight Dynamics Division (1998))

 
Page compiled: Sun Sep 02 13:15:45 GMT+01:00 2001