Astronomy
Constellations - Delphinus - 3eta Del

 
Identification Data
Common Name
ConstellationDelphinus
Star Name3eta Del
Skymap Number20330237
Henry Draper (HD) Number195943
Harvard Revised (HR) Number7858
SAO Number106248
Durchmusterung (DM) NumberBD+12 4378
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number138601
Right Ascension (RA) J200020h 33m 57.042s
Declination (Dec) J2000+13° 1' 38.117"
Position Uncertainty0.0149s
Proper Motion in RA (J2000)/cos(Dec)+0.00523
Proper Motion in Dec (J2000)+0.021966
Radial Velocity-025.0km s-1
Trigonometric Parallax+0.01885s
Trigonometric Parallax Uncertainty0.00082s
GCI Unit Vector in X (J2000)0.606329
GCI Unit Vector in Y (J2000)-0.762597
GCI Unit Vector in Z (J2000)0.225415
Galactic Longitude57.03°
Galactic Latitude
-15.80°
Observational Data
Observed Visual Magnitude (V)5.39
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude5.47
Observed B-V Colour+0.081
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 Magnitude5.2
Observed Photographic Magnitude5.5
Morgan Keenan (MK) Spectral TypeA3IVs
One-Dimensional Spectral ClassA2
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 13:15:39 GMT+01:00 2001