Astronomy
Constellations - Scorpius - eta Sco

 
Identification Data
Common Name
ConstellationScorpius
Star Nameeta Sco
Skymap Number17120023
Henry Draper (HD) Number155203
Harvard Revised (HR) Number6380
SAO Number227707
Durchmusterung (DM) NumberCD-4311485
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number322687
Right Ascension (RA) J200017h 12m 9.193s
Declination (Dec) J2000-43° 14' 21.080"
Position Uncertainty0.0080s
Proper Motion in RA (J2000)/cos(Dec)+0.00201
Proper Motion in Dec (J2000)-0.287466
Radial Velocity-027.0km s-1
Trigonometric Parallax+0.04556s
Trigonometric Parallax Uncertainty0.00079s
GCI Unit Vector in X (J2000)-0.150987
GCI Unit Vector in Y (J2000)-0.712682
GCI Unit Vector in Z (J2000)-0.685046
Galactic Longitude344.37°
Galactic Latitude
-2.30°
Observational Data
Observed Visual Magnitude (V)3.32
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude3.75
Observed B-V Colour+0.426
Observed B Magnitude or (B-V) Magnitude Uncertainty0.004
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude3.4
Observed Photographic Magnitude3.8
Morgan Keenan (MK) Spectral TypeF3III-IVp
One-Dimensional Spectral ClassF2
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 13:15:49 GMT+01:00 2001