Astronomy
Constellations - Perseus - 20 Per

 
Identification Data
Common Name
ConstellationPerseus
Star Name20 Per
Skymap Number2530081
Henry Draper (HD) Number17904
Harvard Revised (HR) Number855
SAO Number55975
Durchmusterung (DM) NumberBD+37 655
Washington Double Stars (WDS) Number
02537+3820
Positional Data
Position and Proper Motion (PPM) Number67877
Right Ascension (RA) J20002h 53m 42.617s
Declination (Dec) J2000+38° 20' 14.975"
Position Uncertainty0.0120s
Proper Motion in RA (J2000)/cos(Dec)+0.00405
Proper Motion in Dec (J2000)-0.078567
Radial Velocity+005.8km s-1
Trigonometric Parallax+0.01387s
Trigonometric Parallax Uncertainty0.00086s
GCI Unit Vector in X (J2000)0.569644
GCI Unit Vector in Y (J2000)0.539205
GCI Unit Vector in Z (J2000)0.620292
Galactic Longitude147.82°
Galactic Latitude
-18.55°
Observational Data
Observed Visual Magnitude (V)5.35
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.004
Observed B Magnitude5.76
Observed B-V Colour+0.406
Observed B Magnitude or (B-V) Magnitude Uncertainty0.006
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude5.3
Observed Photographic Magnitude5.6
Morgan Keenan (MK) Spectral TypeF4IV
One-Dimensional Spectral ClassF0
Position Angle
Year of Observation1993. 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 13:15:47 GMT+01:00 2001