Astronomy
Constellations - Hydra - phi2Hya

 
Identification Data
Common Name
ConstellationHydra
Star Namephi2Hya
Skymap Number10360047
Henry Draper (HD) Number91880
Harvard Revised (HR) Number4156
SAO Number156093
Durchmusterung (DM) NumberSD-15 3087
Washington Double Stars (WDS) Number
10363-1621
Positional Data
Position and Proper Motion (PPM) Number223191
Right Ascension (RA) J200010h 36m 16.658s
Declination (Dec) J2000-16° 20' 39.573"
Position Uncertainty0.0079s
Proper Motion in RA (J2000)/cos(Dec)-0.00211
Proper Motion in Dec (J2000)+0.002966
Radial Velocity+015.7km s-1
Trigonometric Parallax+0.00337s
Trigonometric Parallax Uncertainty0.00075s
GCI Unit Vector in X (J2000)-0.896268
GCI Unit Vector in Y (J2000)0.342800
GCI Unit Vector in Z (J2000)-0.281409
Galactic Longitude261.95°
Galactic Latitude
35.55°
Observational Data
Observed Visual Magnitude (V)6.01
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.004
Observed B Magnitude7.62
Observed B-V Colour+1.610
Observed B Magnitude or (B-V) Magnitude Uncertainty0.009
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude5.9
Observed Photographic Magnitude7.4
Morgan Keenan (MK) Spectral TypeM1III
One-Dimensional Spectral ClassK5
Position Angle280
Year of Observation1959. 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