Astronomy
Constellations - Lacerta - 9 Lac

 
Identification Data
Common Name
ConstellationLacerta
Star Name9 Lac
Skymap Number22370064
Henry Draper (HD) Number214454
Harvard Revised (HR) Number8613
SAO Number34628
Durchmusterung (DM) NumberBD+50 3770
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number40883
Right Ascension (RA) J200022h 37m 22.417s
Declination (Dec) J2000+51° 32' 42.442"
Position Uncertainty0.0055s
Proper Motion in RA (J2000)/cos(Dec)-0.00550
Proper Motion in Dec (J2000)-0.103366
Radial Velocity+010.1km s-1
Trigonometric Parallax+0.01895s
Trigonometric Parallax Uncertainty0.00054s
GCI Unit Vector in X (J2000)0.581917
GCI Unit Vector in Y (J2000)-0.219385
GCI Unit Vector in Z (J2000)0.783098
Galactic Longitude102.74°
Galactic Latitude
-5.99°
Observational Data
Observed Visual Magnitude (V)4.65
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.002
Observed B Magnitude4.90
Observed B-V Colour+0.250
Observed B Magnitude or (B-V) Magnitude Uncertainty0.003
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude4.8
Observed Photographic Magnitude5.0
Morgan Keenan (MK) Spectral TypeA8IV
One-Dimensional Spectral ClassA5
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 13:15:43 GMT+01:00 2001