| Identification Data |
| Common Name | Sirius |
| Constellation | Canis Major |
| Star Name | 9alp CMa |
| Skymap Number | 6450045 |
| Henry Draper (HD) Number | 48915 |
| Harvard Revised (HR) Number | 2491 |
| SAO Number | 151881 |
| Durchmusterung (DM) Number | SD-16 1591 |
Washington Double Stars (WDS) Number
| 06451-1643
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 217626 |
| Right Ascension (RA) J2000 | 6h 45m 8.917s |
| Declination (Dec) J2000 | -16° 42' 58.017" |
| Position Uncertainty | 0.0160s |
| Proper Motion in RA (J2000)/cos(Dec) | -0.03801 |
| Proper Motion in Dec (J2000) | -1.223166 |
| Radial Velocity | -007.6km s-1 |
| Trigonometric Parallax | +0.37922s |
| Trigonometric Parallax Uncertainty | 0.00158s |
| GCI Unit Vector in X (J2000) | -0.187455 |
| GCI Unit Vector in Y (J2000) | 0.939218 |
| GCI Unit Vector in Z (J2000) | -0.287630 |
| Galactic Longitude | 227.22° |
Galactic Latitude
| -8.88°
|
| Observational Data |
| Observed Visual Magnitude (V) | -1.44 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | |
| Observed B Magnitude | -1.43 |
| Observed B-V Colour | +0.009 |
| Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.007 |
| Observed U Magnitude | |
| Observed U-B Colour | |
| Observed U Magnitude or (U-B) Magnitude Uncertainty | |
| Observed Photovisual Magnitude | -1.6 |
| Observed Photographic Magnitude | -1.6 |
| Morgan Keenan (MK) Spectral Type | A1Vm |
| One-Dimensional Spectral Class | A0 |
| Position Angle | |
| Year of Observation | 1981. AD |
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