Astronomy
Constellations - Ara - bet Ara

 
Identification Data
Common Name
ConstellationAra
Star Namebet Ara
Skymap Number17250046
Henry Draper (HD) Number157244
Harvard Revised (HR) Number6461
SAO Number244725
Durchmusterung (DM) NumberCP-55 8100
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number345989
Right Ascension (RA) J200017h 25m 17.988s
Declination (Dec) J2000-55° 31' 47.583"
Position Uncertainty0.0085s
Proper Motion in RA (J2000)/cos(Dec)-0.00097
Proper Motion in Dec (J2000)-0.024766
Radial Velocity-000.4km s-1
Trigonometric Parallax+0.00541s
Trigonometric Parallax Uncertainty0.00076s
GCI Unit Vector in X (J2000)-0.085366
GCI Unit Vector in Y (J2000)-0.559501
GCI Unit Vector in Z (J2000)-0.824422
Galactic Longitude335.37°
Galactic Latitude
-11.01°
Observational Data
Observed Visual Magnitude (V)2.82
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.002
Observed B Magnitude4.30
Observed B-V Colour+1.478
Observed B Magnitude or (B-V) Magnitude Uncertainty0.003
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude2.8
Observed Photographic Magnitude
Morgan Keenan (MK) Spectral TypeK3Ib-IIa
One-Dimensional Spectral ClassK2
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 13:15:33 GMT+01:00 2001