| Identification Data |
| Common Name | |
| Constellation | Apus |
| Star Name | eta Aps |
| Skymap Number | 14180037 |
| Henry Draper (HD) Number | 123998 |
| Harvard Revised (HR) Number | 5303 |
| SAO Number | 258693 |
| Durchmusterung (DM) Number | CP-80 706 |
Washington Double Stars (WDS) Number
|
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 377662 |
| Right Ascension (RA) J2000 | 14h 18m 13.896s |
| Declination (Dec) J2000 | -81° 0' 27.937" |
| Position Uncertainty | 0.0056s |
| Proper Motion in RA (J2000)/cos(Dec) | -0.00851 |
| Proper Motion in Dec (J2000) | -0.065466 |
| Radial Velocity | -009.4km s-1 |
| Trigonometric Parallax | +0.02336s |
| Trigonometric Parallax Uncertainty | 0.00050s |
| GCI Unit Vector in X (J2000) | -0.128722 |
| GCI Unit Vector in Y (J2000) | -0.088660 |
| GCI Unit Vector in Z (J2000) | -0.987710 |
| Galactic Longitude | 306.43° |
Galactic Latitude
| -18.73°
|
| Observational Data |
| Observed Visual Magnitude (V) | 4.90 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.002 |
| Observed B Magnitude | 5.15 |
| Observed B-V Colour | +0.249 |
| 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 | 5.0 |
| Observed Photographic Magnitude | |
| Morgan Keenan (MK) Spectral Type | A2m |
| One-Dimensional Spectral Class | A2 |
| Position Angle | |
| Year of Observation | AD |
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