| Identification Data |
| Common Name | |
| Constellation | Perseus |
| Star Name | 7 Per |
| Skymap Number | 2180018 |
| Henry Draper (HD) Number | 13994 |
| Harvard Revised (HR) Number | 662 |
| SAO Number | 23149 |
| Durchmusterung (DM) Number | BD+56 486 |
Washington Double Stars (WDS) Number
| 02181+5731
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 27387 |
| Right Ascension (RA) J2000 | 2h 18m 4.584s |
| Declination (Dec) J2000 | +57° 30' 58.757" |
| Position Uncertainty | 0.0072s |
| Proper Motion in RA (J2000)/cos(Dec) | -0.00167 |
| Proper Motion in Dec (J2000) | -0.001866 |
| Radial Velocity | -011.8km s-1 |
| Trigonometric Parallax | +0.00459s |
| Trigonometric Parallax Uncertainty | 0.00069s |
| GCI Unit Vector in X (J2000) | 0.442503 |
| GCI Unit Vector in Y (J2000) | 0.304341 |
| GCI Unit Vector in Z (J2000) | 0.843544 |
| Galactic Longitude | 134.39° |
Galactic Latitude
| -3.42°
|
| Observational Data |
| Observed Visual Magnitude (V) | 5.99 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.005 |
| Observed B Magnitude | 7.03 |
| Observed B-V Colour | +1.036 |
| Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.007 |
| Observed U Magnitude | |
| Observed U-B Colour | |
| Observed U Magnitude or (U-B) Magnitude Uncertainty | |
| Observed Photovisual Magnitude | 6.2 |
| Observed Photographic Magnitude | 7.1 |
| Morgan Keenan (MK) Spectral Type | G7III |
| One-Dimensional Spectral Class | K0 |
| Position Angle | 354 |
| Year of Observation | 1911. AD |
Printer Version