| Identification Data |
| Common Name | Altair |
| Constellation | Aquila |
| Star Name | 53alp Aql |
| Skymap Number | 19500184 |
| Henry Draper (HD) Number | 187642 |
| Harvard Revised (HR) Number | 7557 |
| SAO Number | 125122 |
| Durchmusterung (DM) Number | BD+08 4236 |
Washington Double Stars (WDS) Number
| 19508+0852
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 168779 |
| Right Ascension (RA) J2000 | 19h 50m 46.999s |
| Declination (Dec) J2000 | +8° 52' 5.959" |
| Position Uncertainty | 0.0088s |
| Proper Motion in RA (J2000)/cos(Dec) | +0.03622 |
| Proper Motion in Dec (J2000) | +0.385666 |
| Radial Velocity | -026.1km s-1 |
| Trigonometric Parallax | +0.19445s |
| Trigonometric Parallax Uncertainty | 0.00094s |
| GCI Unit Vector in X (J2000) | 0.459221 |
| GCI Unit Vector in Y (J2000) | -0.874842 |
| GCI Unit Vector in Z (J2000) | 0.154164 |
| Galactic Longitude | 47.74° |
Galactic Latitude
| -8.91°
|
| Observational Data |
| Observed Visual Magnitude (V) | 0.93 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.010 |
| Observed B Magnitude | 1.20 |
| Observed B-V Colour | +0.271 |
| Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.015 |
| Observed U Magnitude | |
| Observed U-B Colour | |
| Observed U Magnitude or (U-B) Magnitude Uncertainty | |
| Observed Photovisual Magnitude | .9 |
| Observed Photographic Magnitude | |
| Morgan Keenan (MK) Spectral Type | A7V |
| One-Dimensional Spectral Class | A5 |
| Position Angle | 301 |
| Year of Observation | 1925. AD |
