Astronomy
Constellations - Perseus - 7 Per

 
Identification Data
Common Name
ConstellationPerseus
Star Name7 Per
Skymap Number2180018
Henry Draper (HD) Number13994
Harvard Revised (HR) Number662
SAO Number23149
Durchmusterung (DM) NumberBD+56 486
Washington Double Stars (WDS) Number
02181+5731
Positional Data
Position and Proper Motion (PPM) Number27387
Right Ascension (RA) J20002h 18m 4.584s
Declination (Dec) J2000+57° 30' 58.757"
Position Uncertainty0.0072s
Proper Motion in RA (J2000)/cos(Dec)-0.00167
Proper Motion in Dec (J2000)-0.001866
Radial Velocity-011.8km s-1
Trigonometric Parallax+0.00459s
Trigonometric Parallax Uncertainty0.00069s
GCI Unit Vector in X (J2000)0.442503
GCI Unit Vector in Y (J2000)0.304341
GCI Unit Vector in Z (J2000)0.843544
Galactic Longitude134.39°
Galactic Latitude
-3.42°
Observational Data
Observed Visual Magnitude (V)5.99
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.005
Observed B Magnitude7.03
Observed B-V Colour+1.036
Observed B Magnitude or (B-V) Magnitude Uncertainty0.007
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude6.2
Observed Photographic Magnitude7.1
Morgan Keenan (MK) Spectral TypeG7III
One-Dimensional Spectral ClassK0
Position Angle354
Year of Observation1911. 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