Astronomy
Constellations - Cassiopeia - 24eta Cas (Achird)

 
Identification Data
Common NameAchird
ConstellationCassiopeia
Star Name24eta Cas
Skymap Number480139
Henry Draper (HD) Number4614
Harvard Revised (HR) Number219
SAO Number21732
Durchmusterung (DM) NumberBD+57 150
Washington Double Stars (WDS) Number
00491+5749
Positional Data
Position and Proper Motion (PPM) Number25718
Right Ascension (RA) J20000h 49m 6.291s
Declination (Dec) J2000+57° 48' 54.674"
Position Uncertainty0.0055s
Proper Motion in RA (J2000)/cos(Dec)+0.13606
Proper Motion in Dec (J2000)-0.559767
Radial Velocity+009.km s-1
Trigonometric Parallax+0.16799s
Trigonometric Parallax Uncertainty0.00062s
GCI Unit Vector in X (J2000)0.520472
GCI Unit Vector in Y (J2000)0.113255
GCI Unit Vector in Z (J2000)0.846334
Galactic Longitude122.61°
Galactic Latitude
-5.05°
Observational Data
Observed Visual Magnitude (V)3.45
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.000
Observed B Magnitude4.02
Observed B-V Colour+0.570
Observed B Magnitude or (B-V) Magnitude Uncertainty0.005
Observed U Magnitude4.05
Observed U-B Colour+0.03
Observed U Magnitude or (U-B) Magnitude Uncertainty0.010
Observed Photovisual Magnitude3.6
Observed Photographic Magnitude4.1
Morgan Keenan (MK) Spectral TypeF9V
One-Dimensional Spectral ClassF8
Position Angle315
Year of Observation1993. 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 13:15:36 GMT+01:00 2001