| Identification Data |
| Common Name | |
| Constellation | Aquarius |
| Star Name | 4 Aqr |
| Skymap Number | 20510080 |
| Henry Draper (HD) Number | 198571 |
| Harvard Revised (HR) Number | 7982 |
| SAO Number | 144877 |
| Durchmusterung (DM) Number | SD-06 5604 |
Washington Double Stars (WDS) Number
| 20514-0538
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 204535 |
| Right Ascension (RA) J2000 | 20h 51m 25.748s |
| Declination (Dec) J2000 | -5° 37' 35.878" |
| Position Uncertainty | 0.0132s |
| Proper Motion in RA (J2000)/cos(Dec) | +0.00642 |
| Proper Motion in Dec (J2000) | +0.001367 |
| Radial Velocity | -022.3km s-1 |
| Trigonometric Parallax | +0.01697s |
| Trigonometric Parallax Uncertainty | 0.00126s |
| GCI Unit Vector in X (J2000) | 0.676897 |
| GCI Unit Vector in Y (J2000) | -0.729518 |
| GCI Unit Vector in Z (J2000) | -0.098046 |
| Galactic Longitude | 42.14° |
Galactic Latitude
| -29.18°
|
| Observational Data |
| Observed Visual Magnitude (V) | 6.07 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.010 |
| Observed B Magnitude | 6.53 |
| Observed B-V Colour | +0.458 |
| 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 | 6.0 |
| Observed Photographic Magnitude | 6.3 |
| Morgan Keenan (MK) Spectral Type | F5V+F7V |
| One-Dimensional Spectral Class | F2 |
| Position Angle | 18 |
| Year of Observation | 1994. AD |
