Astronomy
Constellations - Hydrus - sig Hyi

 
Identification Data
Common Name
ConstellationHydrus
Star Namesig Hyi
Skymap Number1550117
Henry Draper (HD) Number12363
Harvard Revised (HR) Number593
SAO Number255835
Durchmusterung (DM) NumberCP-78 42
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number367467
Right Ascension (RA) J20001h 55m 50.548s
Declination (Dec) J2000-78° 20' 54.774"
Position Uncertainty0.0067s
Proper Motion in RA (J2000)/cos(Dec)+0.03400
Proper Motion in Dec (J2000)+0.053166
Radial Velocity+006.0km s-1
Trigonometric Parallax+0.02420s
Trigonometric Parallax Uncertainty0.00051s
GCI Unit Vector in X (J2000)0.176703
GCI Unit Vector in Y (J2000)0.097790
GCI Unit Vector in Z (J2000)-0.979394
Galactic Longitude298.84°
Galactic Latitude
-38.26°
Observational Data
Observed Visual Magnitude (V)6.15
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude6.60
Observed B-V Colour+0.448
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 Magnitude6.2
Observed Photographic Magnitude
Morgan Keenan (MK) Spectral TypeF5-6IV-V
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 13:15:43 GMT+01:00 2001