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Astronomy
Constellations - Ursa Minor - 13gam UMi (Pherkad)

 
Identification Data
Common NamePherkad
ConstellationUrsa Minor
Star Name13gam UMi
Skymap Number15200121
Henry Draper (HD) Number137422
Harvard Revised (HR) Number5735
SAO Number8220
Durchmusterung (DM) NumberBD+72 679
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number8887
Right Ascension (RA) J200015h 20m 43.715s
Declination (Dec) J2000+71° 50' 2.458"
Position Uncertainty0.0060s
Proper Motion in RA (J2000)/cos(Dec)-0.00386
Proper Motion in Dec (J2000)+0.017766
Radial Velocity-003.9km s-1
Trigonometric Parallax+0.00679s
Trigonometric Parallax Uncertainty0.00046s
GCI Unit Vector in X (J2000)-0.199642
GCI Unit Vector in Y (J2000)-0.239466
GCI Unit Vector in Z (J2000)0.950157
Galactic Longitude108.46°
Galactic Latitude
40.84°
Observational Data
Observed Visual Magnitude (V)3.03
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude3.09
Observed B-V Colour+0.058
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 Magnitude3.1
Observed Photographic Magnitude
Morgan Keenan (MK) Spectral TypeA3II-III
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))

 
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Page compiled: Sun Sep 02 13:15:52 GMT+01:00 2001
 
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