Identification Data |
Common Name | |
Constellation | Tucana |
Star Name | alp Tuc |
Skymap Number | 22180097 |
Henry Draper (HD) Number | 211416 |
Harvard Revised (HR) Number | 8502 |
SAO Number | 255193 |
Durchmusterung (DM) Number | CP-60 7561 |
Washington Double Stars (WDS) Number
|
|
Positional Data |
Position and Proper Motion (PPM) Number | 365714 |
Right Ascension (RA) J2000 | 22h 18m 30.094s |
Declination (Dec) J2000 | -60° 15' 34.515" |
Position Uncertainty | 0.0186s |
Proper Motion in RA (J2000)/cos(Dec) | -0.00961 |
Proper Motion in Dec (J2000) | -0.038266 |
Radial Velocity | +042.2km s-1 |
Trigonometric Parallax | +0.01642s |
Trigonometric Parallax Uncertainty | 0.00059s |
GCI Unit Vector in X (J2000) | 0.448213 |
GCI Unit Vector in Y (J2000) | -0.212584 |
GCI Unit Vector in Z (J2000) | -0.868282 |
Galactic Longitude | 330.22° |
Galactic Latitude
| -47.96°
|
Observational Data |
Observed Visual Magnitude (V) | 2.86 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.002 |
Observed B Magnitude | 4.25 |
Observed B-V Colour | +1.393 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.003 |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | 2.9 |
Observed Photographic Magnitude | 4.0 |
Morgan Keenan (MK) Spectral Type | K3III |
One-Dimensional Spectral Class | K2 |
Position Angle | |
Year of Observation | AD |