Astronomy
Constellations - Lacerta - 2 Lac

 
Identification Data
Common Name
ConstellationLacerta
Star Name2 Lac
Skymap Number22210008
Henry Draper (HD) Number212120
Harvard Revised (HR) Number8523
SAO Number51904
Durchmusterung (DM) NumberBD+45 3894
Washington Double Stars (WDS) Number
22210+4632
Positional Data
Position and Proper Motion (PPM) Number62818
Right Ascension (RA) J200022h 21m 1.546s
Declination (Dec) J2000+46° 32' 11.650"
Position Uncertainty0.0047s
Proper Motion in RA (J2000)/cos(Dec)+0.00211
Proper Motion in Dec (J2000)+0.001966
Radial Velocity-009.5km s-1
Trigonometric Parallax+0.00640s
Trigonometric Parallax Uncertainty0.00052s
GCI Unit Vector in X (J2000)0.624736
GCI Unit Vector in Y (J2000)-0.287922
GCI Unit Vector in Z (J2000)0.725814
Galactic Longitude97.80°
Galactic Latitude
-8.86°
Observational Data
Observed Visual Magnitude (V)4.56
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.002
Observed B Magnitude4.46
Observed B-V Colour-0.104
Observed B Magnitude or (B-V) Magnitude Uncertainty0.002
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude4.7
Observed Photographic Magnitude4.5
Morgan Keenan (MK) Spectral TypeB6V
One-Dimensional Spectral ClassB5
Position Angle7
Year of Observation1959. 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