Astronomy
Constellations - Serpens - 24alp Ser (Unukalhai)

 
Identification Data
Common NameUnukalhai
ConstellationSerpens
Star Name24alp Ser
Skymap Number15440059
Henry Draper (HD) Number140573
Harvard Revised (HR) Number5854
SAO Number121157
Durchmusterung (DM) NumberBD+06 3088
Washington Double Stars (WDS) Number
15443+0626
Positional Data
Position and Proper Motion (PPM) Number161854
Right Ascension (RA) J200015h 44m 16.074s
Declination (Dec) J2000+6° 25' 32.257"
Position Uncertainty0.0088s
Proper Motion in RA (J2000)/cos(Dec)+0.00903
Proper Motion in Dec (J2000)+0.044166
Radial Velocity+002.8km s-1
Trigonometric Parallax+0.04454s
Trigonometric Parallax Uncertainty0.00071s
GCI Unit Vector in X (J2000)-0.554717
GCI Unit Vector in Y (J2000)-0.824479
GCI Unit Vector in Z (J2000)0.111913
Galactic Longitude14.20°
Galactic Latitude
44.08°
Observational Data
Observed Visual Magnitude (V)2.63
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.003
Observed B Magnitude3.81
Observed B-V Colour+1.183
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 Magnitude2.8
Observed Photographic Magnitude
Morgan Keenan (MK) Spectral TypeK2IIIbCN1
One-Dimensional Spectral ClassK0
Position Angle350
Year of Observation1911. 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 13:15:49 GMT+01:00 2001