Identification Data |
Common Name | |
Constellation | Centaurus |
Star Name | del Cen |
Skymap Number | 12080058 |
Henry Draper (HD) Number | 105435 |
Harvard Revised (HR) Number | 4621 |
SAO Number | 239689 |
Durchmusterung (DM) Number | CD-50 6697 |
Washington Double Stars (WDS) Number
| 12084-5043
|
Positional Data |
Position and Proper Motion (PPM) Number | 340720 |
Right Ascension (RA) J2000 | 12h 8m 21.499s |
Declination (Dec) J2000 | -50° 43' 20.732" |
Position Uncertainty | 0.0139s |
Proper Motion in RA (J2000)/cos(Dec) | -0.00501 |
Proper Motion in Dec (J2000) | -0.006466 |
Radial Velocity | +011.0km s-1 |
Trigonometric Parallax | +0.00825s |
Trigonometric Parallax Uncertainty | 0.00079s |
GCI Unit Vector in X (J2000) | -0.632657 |
GCI Unit Vector in Y (J2000) | -0.023083 |
GCI Unit Vector in Z (J2000) | -0.774088 |
Galactic Longitude | 296.00° |
Galactic Latitude
| 11.57°
|
Observational Data |
Observed Visual Magnitude (V) | 2.58 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.019 |
Observed B Magnitude | 2.45 |
Observed B-V Colour | -0.13 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.009 |
Observed U Magnitude | 1.56 |
Observed U-B Colour | -0.89 |
Observed U Magnitude or (U-B) Magnitude Uncertainty | 0.012 |
Observed Photovisual Magnitude | 2.9 |
Observed Photographic Magnitude | 3.1 |
Morgan Keenan (MK) Spectral Type | B2IVne |
One-Dimensional Spectral Class | B3 |
Position Angle | 325 |
Year of Observation | 1913. AD |