Astronomy
Constellations - Hydra - 2 Hya

 
Identification Data
Common Name
ConstellationHydra
Star Name2 Hya
Skymap Number8260087
Henry Draper (HD) Number71297
Harvard Revised (HR) Number3321
SAO Number135916
Durchmusterung (DM) NumberSD-03 2345
Washington Double Stars (WDS) Number
08265-0359
Positional Data
Position and Proper Motion (PPM) Number191345
Right Ascension (RA) J20008h 26m 27.208s
Declination (Dec) J2000-3° 59' 14.925"
Position Uncertainty0.0094s
Proper Motion in RA (J2000)/cos(Dec)-0.00229
Proper Motion in Dec (J2000)-0.073866
Radial Velocity+027.3km s-1
Trigonometric Parallax+0.01883s
Trigonometric Parallax Uncertainty0.00080s
GCI Unit Vector in X (J2000)-0.594968
GCI Unit Vector in Y (J2000)0.800735
GCI Unit Vector in Z (J2000)-0.069538
Galactic Longitude227.97°
Galactic Latitude
19.02°
Observational Data
Observed Visual Magnitude (V)5.59
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.004
Observed B Magnitude5.81
Observed B-V Colour+0.224
Observed B Magnitude or (B-V) Magnitude Uncertainty0.006
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude5.7
Observed Photographic Magnitude5.6
Morgan Keenan (MK) Spectral TypeA5III-IV
One-Dimensional Spectral ClassA5
Position Angle4
Year of Observation1977. 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 13:15:42 GMT+01:00 2001