Astronomy
Constellations - Eridanus - 55 Eri

 
Identification Data
Common Name
ConstellationEridanus
Star Name55 Eri
Skymap Number4430090
Henry Draper (HD) Number30021
Harvard Revised (HR) Number1506
SAO Number131443
Durchmusterung (DM) NumberSD-09 970
Washington Double Stars (WDS) Number
04436-0848
Positional Data
Position and Proper Motion (PPM) Number187259
Right Ascension (RA) J20004h 43m 35.165s
Declination (Dec) J2000-8° 47' 46.419"
Position Uncertainty0.0165s
Proper Motion in RA (J2000)/cos(Dec)+0.00195
Proper Motion in Dec (J2000)-0.029367
Radial Velocity+048.km s-1
Trigonometric Parallax+0.00804s
Trigonometric Parallax Uncertainty0.00139s
GCI Unit Vector in X (J2000)0.323426
GCI Unit Vector in Y (J2000)0.933815
GCI Unit Vector in Z (J2000)-0.152921
Galactic Longitude205.97°
Galactic Latitude
-32.37°
Observational Data
Observed Visual Magnitude (V)6.68
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.008
Observed B Magnitude7.59
Observed B-V Colour+0.905
Observed B Magnitude or (B-V) Magnitude Uncertainty0.011
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude6.7
Observed Photographic Magnitude7.1
Morgan Keenan (MK) Spectral TypeG8III
One-Dimensional Spectral ClassF5
Position Angle318
Year of Observation1980. 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 13:15:40 GMT+01:00 2001