Astronomy
Constellations - Hydra - 1 Hya

 
Identification Data
Common Name
ConstellationHydra
Star Name1 Hya
Skymap Number8240116
Henry Draper (HD) Number70958
Harvard Revised (HR) Number3297
SAO Number135877
Durchmusterung (DM) NumberSD-03 2333
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number191306
Right Ascension (RA) J20008h 24m 35.014s
Declination (Dec) J2000-3° 45' 4.465"
Position Uncertainty0.0097s
Proper Motion in RA (J2000)/cos(Dec)-0.01410
Proper Motion in Dec (J2000)-0.025866
Radial Velocity+071.8km s-1
Trigonometric Parallax+0.03675s
Trigonometric Parallax Uncertainty0.00087s
GCI Unit Vector in X (J2000)-0.588580
GCI Unit Vector in Y (J2000)0.805788
GCI Unit Vector in Z (J2000)-0.065425
Galactic Longitude227.50°
Galactic Latitude
18.74°
Observational Data
Observed Visual Magnitude (V)5.62
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude6.09
Observed B-V Colour+0.469
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 Magnitude5.8
Observed Photographic Magnitude6.1
Morgan Keenan (MK) Spectral TypeF3V
One-Dimensional Spectral ClassF5
Position Angle186
Year of Observation1988. 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