| Identification Data |
| Common Name | Alkaid |
| Constellation | Ursa Major |
| Star Name | 85eta UMa |
| Skymap Number | 13470101 |
| Henry Draper (HD) Number | 120315 |
| Harvard Revised (HR) Number | 5191 |
| SAO Number | 44752 |
| Durchmusterung (DM) Number | BD+50 2027 |
Washington Double Stars (WDS) Number
|
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 53742 |
| Right Ascension (RA) J2000 | 13h 47m 32.437s |
| Declination (Dec) J2000 | +49° 18' 47.754" |
| Position Uncertainty | 0.0067s |
| Proper Motion in RA (J2000)/cos(Dec) | -0.01240 |
| Proper Motion in Dec (J2000) | -0.015666 |
| Radial Velocity | -013.4km s-1 |
| Trigonometric Parallax | +0.03239s |
| Trigonometric Parallax Uncertainty | 0.00074s |
| GCI Unit Vector in X (J2000) | -0.581460 |
| GCI Unit Vector in Y (J2000) | -0.294802 |
| GCI Unit Vector in Z (J2000) | 0.758285 |
| Galactic Longitude | 100.68° |
Galactic Latitude
| 65.32°
|
| Observational Data |
| Observed Visual Magnitude (V) | 1.86 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.006 |
| Observed B Magnitude | 1.76 |
| Observed B-V Colour | -0.102 |
| Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.007 |
| Observed U Magnitude | |
| Observed U-B Colour | |
| Observed U Magnitude or (U-B) Magnitude Uncertainty | |
| Observed Photovisual Magnitude | 1.9 |
| Observed Photographic Magnitude | |
| Morgan Keenan (MK) Spectral Type | B3V |
| One-Dimensional Spectral Class | B3 |
| Position Angle | |
| Year of Observation | AD |
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