Astronomy
Constellations - Libra - 21nu Lib

 
Identification Data
Common Name
ConstellationLibra
Star Name21nu Lib
Skymap Number15060104
Henry Draper (HD) Number133774
Harvard Revised (HR) Number5622
SAO Number159028
Durchmusterung (DM) NumberSD-15 4026
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number229760
Right Ascension (RA) J200015h 6m 37.596s
Declination (Dec) J2000-16° 15' 24.544"
Position Uncertainty0.0090s
Proper Motion in RA (J2000)/cos(Dec)-0.00253
Proper Motion in Dec (J2000)-0.023366
Radial Velocity-015.1km s-1
Trigonometric Parallax+0.00426s
Trigonometric Parallax Uncertainty0.00080s
GCI Unit Vector in X (J2000)-0.658925
GCI Unit Vector in Y (J2000)-0.698176
GCI Unit Vector in Z (J2000)-0.279943
Galactic Longitude344.00°
Galactic Latitude
35.62°
Observational Data
Observed Visual Magnitude (V)5.19
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.004
Observed B Magnitude6.76
Observed B-V Colour+1.574
Observed B Magnitude or (B-V) Magnitude Uncertainty0.008
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude5.3
Observed Photographic Magnitude6.3
Morgan Keenan (MK) Spectral TypeK5-III
One-Dimensional Spectral ClassK0
Position Angle
Year of Observation 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 13:15:44 GMT+01:00 2001