| Identification Data |
| Common Name | |
| Constellation | Crater |
| Star Name | 21the Crt |
| Skymap Number | 11360110 |
| Henry Draper (HD) Number | 100889 |
| Harvard Revised (HR) Number | 4468 |
| SAO Number | 138296 |
| Durchmusterung (DM) Number | SD-08 3202 |
Washington Double Stars (WDS) Number
|
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 194645 |
| Right Ascension (RA) J2000 | 11h 36m 40.913s |
| Declination (Dec) J2000 | -9° 48' 8.089" |
| Position Uncertainty | 0.0073s |
| Proper Motion in RA (J2000)/cos(Dec) | -0.00401 |
| Proper Motion in Dec (J2000) | +0.002866 |
| Radial Velocity | +001.0km s-1 |
| Trigonometric Parallax | +0.01070s |
| Trigonometric Parallax Uncertainty | 0.00079s |
| GCI Unit Vector in X (J2000) | -0.980305 |
| GCI Unit Vector in Y (J2000) | 0.100086 |
| GCI Unit Vector in Z (J2000) | -0.170248 |
| Galactic Longitude | 274.26° |
Galactic Latitude
| 48.86°
|
| Observational Data |
| Observed Visual Magnitude (V) | 4.69 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
| Observed B Magnitude | 4.63 |
| Observed B-V Colour | -0.059 |
| 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 | 4.8 |
| Observed Photographic Magnitude | 4.8 |
| Morgan Keenan (MK) Spectral Type | B9.5Vn |
| One-Dimensional Spectral Class | B9 |
| Position Angle | |
| Year of Observation | AD |
