Identification Data |
Common Name | Mirphak |
Constellation | Perseus |
Star Name | 33alp Per |
Skymap Number | 3240048 |
Henry Draper (HD) Number | 20902 |
Harvard Revised (HR) Number | 1017 |
SAO Number | 38787 |
Durchmusterung (DM) Number | BD+49 917 |
Washington Double Stars (WDS) Number
| 03243+4952
|
Positional Data |
Position and Proper Motion (PPM) Number | 46127 |
Right Ascension (RA) J2000 | 3h 24m 19.370s |
Declination (Dec) J2000 | +49° 51' 40.247" |
Position Uncertainty | 0.0065s |
Proper Motion in RA (J2000)/cos(Dec) | +0.00249 |
Proper Motion in Dec (J2000) | -0.026066 |
Radial Velocity | -002.3km s-1 |
Trigonometric Parallax | +0.00551s |
Trigonometric Parallax Uncertainty | 0.00066s |
GCI Unit Vector in X (J2000) | 0.404980 |
GCI Unit Vector in Y (J2000) | 0.501552 |
GCI Unit Vector in Z (J2000) | 0.764485 |
Galactic Longitude | 146.57° |
Galactic Latitude
| -5.86°
|
Observational Data |
Observed Visual Magnitude (V) | 1.81 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.004 |
Observed B Magnitude | 2.32 |
Observed B-V Colour | +0.512 |
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 | 1.9 |
Observed Photographic Magnitude | |
Morgan Keenan (MK) Spectral Type | F5Ib |
One-Dimensional Spectral Class | F5 |
Position Angle | 196 |
Year of Observation | 1924. AD |