Identification Data |
Common Name | |
Constellation | Tucana |
Star Name | bet2Tuc |
Skymap Number | 310089 |
Henry Draper (HD) Number | 2885 |
Harvard Revised (HR) Number | 127 |
SAO Number | 248202 |
Durchmusterung (DM) Number | CD-63 8 |
Washington Double Stars (WDS) Number
| 00315-6257
|
Positional Data |
Position and Proper Motion (PPM) Number | 351870 |
Right Ascension (RA) J2000 | 0h 31m 33.468s |
Declination (Dec) J2000 | -62° 57' 56.020" |
Position Uncertainty | 0.0499s |
Proper Motion in RA (J2000)/cos(Dec) | +0.01290 |
Proper Motion in Dec (J2000) | -0.045866 |
Radial Velocity | +009.8km s-1 |
Trigonometric Parallax | +0.01895s |
Trigonometric Parallax Uncertainty | 0.00435s |
GCI Unit Vector in X (J2000) | 0.450224 |
GCI Unit Vector in Y (J2000) | 0.062389 |
GCI Unit Vector in Z (J2000) | -0.890733 |
Galactic Longitude | 306.77° |
Galactic Latitude
| -54.01°
|
Observational Data |
Observed Visual Magnitude (V) | 4.51 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
Observed B Magnitude | 4.65 |
Observed B-V Colour | +0.142 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.004 |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | 4.5 |
Observed Photographic Magnitude | 4.5 |
Morgan Keenan (MK) Spectral Type | A2V+A7V |
One-Dimensional Spectral Class | A2 |
Position Angle | 168 |
Year of Observation | 1990. AD |