Astronomy
Constellations - Draco - 4 Dra

 
Identification Data
Common Name
ConstellationDraco
Star Name4 Dra
Skymap Number12300020
Henry Draper (HD) Number108907
Harvard Revised (HR) Number4765
SAO Number15816
Durchmusterung (DM) NumberBD+70 700
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number18259
Right Ascension (RA) J200012h 30m 6.657s
Declination (Dec) J2000+69° 12' 4.045"
Position Uncertainty0.0063s
Proper Motion in RA (J2000)/cos(Dec)-0.01185
Proper Motion in Dec (J2000)-0.056566
Radial Velocity-013.0km s-1
Trigonometric Parallax+0.00561s
Trigonometric Parallax Uncertainty0.00051s
GCI Unit Vector in X (J2000)-0.352028
GCI Unit Vector in Y (J2000)-0.046519
GCI Unit Vector in Z (J2000)0.934833
Galactic Longitude125.74°
Galactic Latitude
47.81°
Observational Data
Observed Visual Magnitude (V)5.03
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.007
Observed B Magnitude6.59
Observed B-V Colour+1.561
Observed B Magnitude or (B-V) Magnitude Uncertainty0.008
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude5.3
Observed Photographic Magnitude6.6
Morgan Keenan (MK) Spectral TypeM3IIIa
One-Dimensional Spectral ClassM0
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