Identification Data |
Common Name | |
Constellation | Ursa Major |
Star Name | 18 UMa |
Skymap Number | 9160035 |
Henry Draper (HD) Number | 79439 |
Harvard Revised (HR) Number | 3662 |
SAO Number | 27191 |
Durchmusterung (DM) Number | BD+54 1285 |
Washington Double Stars (WDS) Number
|
|
Positional Data |
Position and Proper Motion (PPM) Number | 32078 |
Right Ascension (RA) J2000 | 9h 16m 11.327s |
Declination (Dec) J2000 | +54° 1' 18.687" |
Position Uncertainty | 0.0098s |
Proper Motion in RA (J2000)/cos(Dec) | +0.00558 |
Proper Motion in Dec (J2000) | +0.059866 |
Radial Velocity | -018.7km s-1 |
Trigonometric Parallax | +0.02755s |
Trigonometric Parallax Uncertainty | 0.00080s |
GCI Unit Vector in X (J2000) | -0.443692 |
GCI Unit Vector in Y (J2000) | 0.385054 |
GCI Unit Vector in Z (J2000) | 0.809241 |
Galactic Longitude | 163.09° |
Galactic Latitude
| 42.66°
|
Observational Data |
Observed Visual Magnitude (V) | 4.82 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
Observed B Magnitude | 5.02 |
Observed B-V Colour | +0.204 |
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 | 4.9 |
Observed Photographic Magnitude | |
Morgan Keenan (MK) Spectral Type | A5V |
One-Dimensional Spectral Class | A5 |
Position Angle | |
Year of Observation | AD |