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Astronomy
Constellations - Hydra - 46gam Hya

 
Identification Data
Common Name
ConstellationHydra
Star Name46gam Hya
Skymap Number13180143
Henry Draper (HD) Number115659
Harvard Revised (HR) Number5020
SAO Number181543
Durchmusterung (DM) NumberBD-22 3554
Washington Double Stars (WDS) Number
13189-2310
Positional Data
Position and Proper Motion (PPM) Number261484
Right Ascension (RA) J200013h 18m 55.296s
Declination (Dec) J2000-23° 10' 17.444"
Position Uncertainty0.0087s
Proper Motion in RA (J2000)/cos(Dec)+0.00496
Proper Motion in Dec (J2000)-0.041166
Radial Velocity-005.4km s-1
Trigonometric Parallax+0.02469s
Trigonometric Parallax Uncertainty0.00070s
GCI Unit Vector in X (J2000)-0.865359
GCI Unit Vector in Y (J2000)-0.310361
GCI Unit Vector in Z (J2000)-0.393485
Galactic Longitude311.11°
Galactic Latitude
39.26°
Observational Data
Observed Visual Magnitude (V)3.00
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.002
Observed B Magnitude3.91
Observed B-V Colour+0.914
Observed B Magnitude or (B-V) Magnitude Uncertainty0.003
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude3.3
Observed Photographic Magnitude4.1
Morgan Keenan (MK) Spectral TypeG8IIIa
One-Dimensional Spectral ClassG5
Position Angle95
Year of Observation1891. 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))

 
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Page compiled: Sun Sep 02 13:15:43 GMT+01:00 2001
 
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