| Identification Data |
| Common Name | Deneb el Okab |
| Constellation | Aquila |
| Star Name | 13eps Aql |
| Skymap Number | 18590133 |
| Henry Draper (HD) Number | 176411 |
| Harvard Revised (HR) Number | 7176 |
| SAO Number | 104318 |
| Durchmusterung (DM) Number | BD+14 3736 |
Washington Double Stars (WDS) Number
| 18596+1504
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 135586 |
| Right Ascension (RA) J2000 | 18h 59m 37.357s |
| Declination (Dec) J2000 | +15° 4' 5.873" |
| Position Uncertainty | 0.0113s |
| Proper Motion in RA (J2000)/cos(Dec) | -0.00364 |
| Proper Motion in Dec (J2000) | -0.073866 |
| Radial Velocity | -048.0km s-1 |
| Trigonometric Parallax | +0.02122s |
| Trigonometric Parallax Uncertainty | 0.00077s |
| GCI Unit Vector in X (J2000) | 0.248384 |
| GCI Unit Vector in Y (J2000) | -0.933124 |
| GCI Unit Vector in Z (J2000) | 0.259970 |
| Galactic Longitude | 47.30° |
Galactic Latitude
| 5.04°
|
| Observational Data |
| Observed Visual Magnitude (V) | 4.02 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
| Observed B Magnitude | 5.09 |
| Observed B-V Colour | +1.067 |
| 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 | 4.2 |
| Observed Photographic Magnitude | |
| Morgan Keenan (MK) Spectral Type | K1-IIICN0.5 |
| One-Dimensional Spectral Class | K0 |
| Position Angle | 186 |
| Year of Observation | 1921. AD |
