| 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 |
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