Astronomy
Constellations - Corona Australis - eta2CrA

 
Identification Data
Common Name
ConstellationCorona Australis
Star Nameeta2CrA
Skymap Number18490131
Henry Draper (HD) Number173861
Harvard Revised (HR) Number7068
SAO Number229307
Durchmusterung (DM) NumberCD-4312854
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number324480
Right Ascension (RA) J200018h 49m 34.995s
Declination (Dec) J2000-43° 26' 2.767"
Position Uncertainty0.0088s
Proper Motion in RA (J2000)/cos(Dec)-0.00026
Proper Motion in Dec (J2000)-0.025466
Radial Velocity-023.0km s-1
Trigonometric Parallax+0.00537s
Trigonometric Parallax Uncertainty0.00075s
GCI Unit Vector in X (J2000)0.155882
GCI Unit Vector in Y (J2000)-0.709237
GCI Unit Vector in Z (J2000)-0.687520
Galactic Longitude352.69°
Galactic Latitude
-17.95°
Observational Data
Observed Visual Magnitude (V)5.60
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.004
Observed B Magnitude5.52
Observed B-V Colour-0.080
Observed B Magnitude or (B-V) Magnitude Uncertainty0.005
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude5.9
Observed Photographic Magnitude
Morgan Keenan (MK) Spectral TypeB9IV
One-Dimensional Spectral ClassB9
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 13:15:38 GMT+01:00 2001