| Identification Data |
| Common Name | Megrez |
| Constellation | Ursa Major |
| Star Name | 69del UMa |
| Skymap Number | 12150059 |
| Henry Draper (HD) Number | 106591 |
| Harvard Revised (HR) Number | 4660 |
| SAO Number | 28315 |
| Durchmusterung (DM) Number | BD+57 1363 |
Washington Double Stars (WDS) Number
| 12154+5702
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 33469 |
| Right Ascension (RA) J2000 | 12h 15m 25.560s |
| Declination (Dec) J2000 | +57° 1' 57.421" |
| Position Uncertainty | 0.0068s |
| Proper Motion in RA (J2000)/cos(Dec) | +0.01269 |
| Proper Motion in Dec (J2000) | +0.007866 |
| Radial Velocity | -013.4km s-1 |
| Trigonometric Parallax | +0.04005s |
| Trigonometric Parallax Uncertainty | 0.00060s |
| GCI Unit Vector in X (J2000) | -0.542929 |
| GCI Unit Vector in Y (J2000) | -0.036599 |
| GCI Unit Vector in Z (J2000) | 0.838980 |
| Galactic Longitude | 132.56° |
Galactic Latitude
| 59.42°
|
| Observational Data |
| Observed Visual Magnitude (V) | 3.30 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.002 |
| Observed B Magnitude | 3.39 |
| Observed B-V Colour | +0.092 |
| 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 | 3.4 |
| Observed Photographic Magnitude | 3.3 |
| Morgan Keenan (MK) Spectral Type | A3V |
| One-Dimensional Spectral Class | A2 |
| Position Angle | 73 |
| Year of Observation | 1923. AD |
