Astronomy
Constellations - Leo - 4lam Leo (Alterf)

 
Identification Data
Common NameAlterf
ConstellationLeo
Star Name4lam Leo
Skymap Number9310141
Henry Draper (HD) Number82308
Harvard Revised (HR) Number3773
SAO Number80885
Durchmusterung (DM) NumberBD+23 2107
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number99651
Right Ascension (RA) J20009h 31m 43.228s
Declination (Dec) J2000+22° 58' 4.694"
Position Uncertainty0.0092s
Proper Motion in RA (J2000)/cos(Dec)-0.00140
Proper Motion in Dec (J2000)-0.039066
Radial Velocity+026.7km s-1
Trigonometric Parallax+0.00969s
Trigonometric Parallax Uncertainty0.00089s
GCI Unit Vector in X (J2000)-0.734646
GCI Unit Vector in Y (J2000)0.555001
GCI Unit Vector in Z (J2000)0.390216
Galactic Longitude206.70°
Galactic Latitude
44.86°
Observational Data
Observed Visual Magnitude (V)4.30
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude5.84
Observed B-V Colour+1.540
Observed B Magnitude or (B-V) Magnitude Uncertainty0.005
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude4.5
Observed Photographic Magnitude
Morgan Keenan (MK) Spectral TypeK4.5IIIb
One-Dimensional Spectral ClassK5
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