Astronomy
Constellations - Eridanus - 4 Eri

 
Identification Data
Common Name
ConstellationEridanus
Star Name4 Eri
Skymap Number2570056
Henry Draper (HD) Number18454
Harvard Revised (HR) Number883
SAO Number168183
Durchmusterung (DM) NumberCD-24 1336
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number245622
Right Ascension (RA) J20002h 57m 23.766s
Declination (Dec) J2000-23° 51' 43.789"
Position Uncertainty0.0079s
Proper Motion in RA (J2000)/cos(Dec)+0.00740
Proper Motion in Dec (J2000)-0.035866
Radial Velocity+028.8km s-1
Trigonometric Parallax+0.02054s
Trigonometric Parallax Uncertainty0.00071s
GCI Unit Vector in X (J2000)0.653969
GCI Unit Vector in Y (J2000)0.639275
GCI Unit Vector in Z (J2000)-0.404538
Galactic Longitude213.46°
Galactic Latitude
-61.47°
Observational Data
Observed Visual Magnitude (V)5.44
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.004
Observed B Magnitude5.69
Observed B-V Colour+0.247
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 Magnitude5.5
Observed Photographic Magnitude5.6
Morgan Keenan (MK) Spectral TypeA5V
One-Dimensional Spectral ClassA5
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 13:15:40 GMT+01:00 2001