Astronomy
Constellations - Perseus - 9 Per

 
Identification Data
Common Name
ConstellationPerseus
Star Name9 Per
Skymap Number2220073
Henry Draper (HD) Number14489
Harvard Revised (HR) Number685
SAO Number23256
Durchmusterung (DM) NumberBD+55 598
Washington Double Stars (WDS) Number
02224+5551
Positional Data
Position and Proper Motion (PPM) Number27527
Right Ascension (RA) J20002h 22m 21.434s
Declination (Dec) J2000+55° 50' 44.353"
Position Uncertainty0.0074s
Proper Motion in RA (J2000)/cos(Dec)+0.00004
Proper Motion in Dec (J2000)-0.001266
Radial Velocity-014.3km s-1
Trigonometric Parallax+0.00159s
Trigonometric Parallax Uncertainty0.00065s
GCI Unit Vector in X (J2000)0.456555
GCI Unit Vector in Y (J2000)0.326733
GCI Unit Vector in Z (J2000)0.827528
Galactic Longitude135.51°
Galactic Latitude
-4.79°
Observational Data
Observed Visual Magnitude (V)5.20
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude5.52
Observed B-V Colour+0.320
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 Magnitude5.3
Morgan Keenan (MK) Spectral TypeA2Ia
One-Dimensional Spectral ClassA2
Position Angle162
Year of Observation1918. 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