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Astronomy
Constellations - Crater - 7alp Crt (Alkes)

 
Identification Data
Common NameAlkes
ConstellationCrater
Star Name7alp Crt
Skymap Number10590145
Henry Draper (HD) Number95272
Harvard Revised (HR) Number4287
SAO Number156375
Durchmusterung (DM) NumberSD-17 3273
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number223763
Right Ascension (RA) J200010h 59m 46.464s
Declination (Dec) J2000-18° 17' 55.620"
Position Uncertainty0.0101s
Proper Motion in RA (J2000)/cos(Dec)-0.03247
Proper Motion in Dec (J2000)+0.129166
Radial Velocity+046.8km s-1
Trigonometric Parallax+0.01871s
Trigonometric Parallax Uncertainty0.00103s
GCI Unit Vector in X (J2000)-0.916839
GCI Unit Vector in Y (J2000)0.246634
GCI Unit Vector in Z (J2000)-0.313972
Galactic Longitude269.07°
Galactic Latitude
37.12°
Observational Data
Observed Visual Magnitude (V)4.08
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude5.17
Observed B-V Colour+1.091
Observed B Magnitude or (B-V) Magnitude Uncertainty0.004
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude4.2
Observed Photographic Magnitude5.2
Morgan Keenan (MK) Spectral TypeK0+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))

 
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Page compiled: Sun Sep 02 13:15:38 GMT+01:00 2001
 
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