Astronomy
Constellations - Cetus - 31eta Cet (Dheneb)

 
Identification Data
Common NameDheneb
ConstellationCetus
Star Name31eta Cet
Skymap Number1080091
Henry Draper (HD) Number6805
Harvard Revised (HR) Number334
SAO Number147632
Durchmusterung (DM) NumberSD-10 240
Washington Double Stars (WDS) Number
01086-1011
Positional Data
Position and Proper Motion (PPM) Number209790
Right Ascension (RA) J20001h 8m 35.391s
Declination (Dec) J2000-10° 10' 56.151"
Position Uncertainty0.0074s
Proper Motion in RA (J2000)/cos(Dec)+0.01462
Proper Motion in Dec (J2000)-0.138366
Radial Velocity+011.5km s-1
Trigonometric Parallax+0.02773s
Trigonometric Parallax Uncertainty0.00071s
GCI Unit Vector in X (J2000)0.940500
GCI Unit Vector in Y (J2000)0.290189
GCI Unit Vector in Z (J2000)-0.176780
Galactic Longitude137.17°
Galactic Latitude
-72.58°
Observational Data
Observed Visual Magnitude (V)3.46
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.002
Observed B Magnitude4.63
Observed B-V Colour+1.165
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 Magnitude3.6
Observed Photographic Magnitude4.6
Morgan Keenan (MK) Spectral TypeK2-IIICN0.5
One-Dimensional Spectral ClassK0
Position Angle305
Year of Observation1907. 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 13:15:37 GMT+01:00 2001