| Identification Data |
| Common Name | |
| Constellation | Equuleus |
| Star Name | 4 Equ |
| Skymap Number | 21050096 |
| Henry Draper (HD) Number | 200790 |
| Harvard Revised (HR) Number | 8077 |
| SAO Number | 126535 |
| Durchmusterung (DM) Number | BD+05 4697 |
Washington Double Stars (WDS) Number
| 21054+0557
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 171253 |
| Right Ascension (RA) J2000 | 21h 5m 26.720s |
| Declination (Dec) J2000 | +5° 57' 29.517" |
| Position Uncertainty | 0.0225s |
| Proper Motion in RA (J2000)/cos(Dec) | -0.00787 |
| Proper Motion in Dec (J2000) | -0.119166 |
| Radial Velocity | -018.3km s-1 |
| Trigonometric Parallax | +0.02706s |
| Trigonometric Parallax Uncertainty | 0.00107s |
| GCI Unit Vector in X (J2000) | 0.719797 |
| GCI Unit Vector in Y (J2000) | -0.686380 |
| GCI Unit Vector in Z (J2000) | 0.103803 |
| Galactic Longitude | 55.39° |
Galactic Latitude
| -26.18°
|
| Observational Data |
| Observed Visual Magnitude (V) | 5.96 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.004 |
| Observed B Magnitude | 6.49 |
| Observed B-V Colour | +0.528 |
| Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.006 |
| Observed U Magnitude | |
| Observed U-B Colour | |
| Observed U Magnitude or (U-B) Magnitude Uncertainty | |
| Observed Photovisual Magnitude | 6.0 |
| Observed Photographic Magnitude | 6.6 |
| Morgan Keenan (MK) Spectral Type | F8V |
| One-Dimensional Spectral Class | F8 |
| Position Angle | 278 |
| Year of Observation | 1924. AD |
