Astronomy
Constellations - Monoceros - 21 Mon

 
Identification Data
Common Name
ConstellationMonoceros
Star Name21 Mon
Skymap Number7110106
Henry Draper (HD) Number55057
Harvard Revised (HR) Number2707
SAO Number134316
Durchmusterung (DM) NumberBD-00 1634
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number176739
Right Ascension (RA) J20007h 11m 23.615s
Declination (Dec) J2000-0° 18' 6.940"
Position Uncertainty0.0084s
Proper Motion in RA (J2000)/cos(Dec)-0.00183
Proper Motion in Dec (J2000)-0.009166
Radial Velocity+030.0km s-1
Trigonometric Parallax+0.01249s
Trigonometric Parallax Uncertainty0.00075s
GCI Unit Vector in X (J2000)-0.306495
GCI Unit Vector in Y (J2000)0.951858
GCI Unit Vector in Z (J2000)-0.005270
Galactic Longitude215.49°
Galactic Latitude
4.30°
Observational Data
Observed Visual Magnitude (V)5.43
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.005
Observed B Magnitude5.73
Observed B-V Colour+0.303
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 Magnitude5.4
Observed Photographic Magnitude5.5
Morgan Keenan (MK) Spectral TypeA8Vn-F3Vn
One-Dimensional Spectral ClassF0
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 13:15:45 GMT+01:00 2001