Astronomy
Constellations - Hydrus - tau2Hyi

 
Identification Data
Common Name
ConstellationHydrus
Star Nametau2Hyi
Skymap Number1470125
Henry Draper (HD) Number11604
Harvard Revised (HR) Number550
SAO Number258280
Durchmusterung (DM) NumberCP-80 35
Washington Double Stars (WDS) Number
01478-8011
Positional Data
Position and Proper Motion (PPM) Number376094
Right Ascension (RA) J20001h 47m 46.444s
Declination (Dec) J2000-80° 10' 34.720"
Position Uncertainty0.0067s
Proper Motion in RA (J2000)/cos(Dec)-0.02803
Proper Motion in Dec (J2000)-0.058466
Radial Velocity+030.1km s-1
Trigonometric Parallax+0.01613s
Trigonometric Parallax Uncertainty0.00052s
GCI Unit Vector in X (J2000)0.152097
GCI Unit Vector in Y (J2000)0.077309
GCI Unit Vector in Z (J2000)-0.985337
Galactic Longitude299.96°
Galactic Latitude
-36.63°
Observational Data
Observed Visual Magnitude (V)6.05
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude6.39
Observed B-V Colour+0.336
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 Magnitude6.1
Observed Photographic Magnitude
Morgan Keenan (MK) Spectral TypeF0IV
One-Dimensional Spectral ClassF0
Position Angle28
Year of Observation1918. 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