Identification Data |
Common Name | |
Constellation | Perseus |
Star Name | 9 Per |
Skymap Number | 2220073 |
Henry Draper (HD) Number | 14489 |
Harvard Revised (HR) Number | 685 |
SAO Number | 23256 |
Durchmusterung (DM) Number | BD+55 598 |
Washington Double Stars (WDS) Number
| 02224+5551
|
Positional Data |
Position and Proper Motion (PPM) Number | 27527 |
Right Ascension (RA) J2000 | 2h 22m 21.434s |
Declination (Dec) J2000 | +55° 50' 44.353" |
Position Uncertainty | 0.0074s |
Proper Motion in RA (J2000)/cos(Dec) | +0.00004 |
Proper Motion in Dec (J2000) | -0.001266 |
Radial Velocity | -014.3km s-1 |
Trigonometric Parallax | +0.00159s |
Trigonometric Parallax Uncertainty | 0.00065s |
GCI Unit Vector in X (J2000) | 0.456555 |
GCI Unit Vector in Y (J2000) | 0.326733 |
GCI Unit Vector in Z (J2000) | 0.827528 |
Galactic Longitude | 135.51° |
Galactic Latitude
| -4.79°
|
Observational Data |
Observed Visual Magnitude (V) | 5.20 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
Observed B Magnitude | 5.52 |
Observed B-V Colour | +0.320 |
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 | 5.2 |
Observed Photographic Magnitude | 5.3 |
Morgan Keenan (MK) Spectral Type | A2Ia |
One-Dimensional Spectral Class | A2 |
Position Angle | 162 |
Year of Observation | 1918. AD |