| Identification Data |
| Common Name | |
| Constellation | Ursa Major |
| Star Name | 81 UMa |
| Skymap Number | 13340013 |
| Henry Draper (HD) Number | 118214 |
| Harvard Revised (HR) Number | 5109 |
| SAO Number | 28803 |
| Durchmusterung (DM) Number | BD+56 1667 |
Washington Double Stars (WDS) Number
|
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 34094 |
| Right Ascension (RA) J2000 | 13h 34m 7.305s |
| Declination (Dec) J2000 | +55° 20' 54.361" |
| Position Uncertainty | 0.0059s |
| Proper Motion in RA (J2000)/cos(Dec) | -0.00219 |
| Proper Motion in Dec (J2000) | -0.006666 |
| Radial Velocity | -007.0km s-1 |
| Trigonometric Parallax | +0.01177s |
| Trigonometric Parallax Uncertainty | 0.00055s |
| GCI Unit Vector in X (J2000) | -0.521305 |
| GCI Unit Vector in Y (J2000) | -0.226999 |
| GCI Unit Vector in Z (J2000) | 0.822625 |
| Galactic Longitude | 110.48° |
Galactic Latitude
| 60.74°
|
| Observational Data |
| Observed Visual Magnitude (V) | 5.60 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.004 |
| Observed B Magnitude | 5.58 |
| Observed B-V Colour | -0.017 |
| Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.004 |
| Observed U Magnitude | |
| Observed U-B Colour | |
| Observed U Magnitude or (U-B) Magnitude Uncertainty | |
| Observed Photovisual Magnitude | 5.5 |
| Observed Photographic Magnitude | 5.5 |
| Morgan Keenan (MK) Spectral Type | A0V |
| One-Dimensional Spectral Class | A0 |
| Position Angle | |
| Year of Observation | AD |
Printer Version