Identification Data |
Common Name | |
Constellation | Perseus |
Star Name | 4 Per |
Skymap Number | 2020046 |
Henry Draper (HD) Number | 12303 |
Harvard Revised (HR) Number | 590 |
SAO Number | 22859 |
Durchmusterung (DM) Number | BD+53 439 |
Washington Double Stars (WDS) Number
|
|
Positional Data |
Position and Proper Motion (PPM) Number | 27040 |
Right Ascension (RA) J2000 | 2h 2m 18.108s |
Declination (Dec) J2000 | +54° 29' 15.148" |
Position Uncertainty | 0.0057s |
Proper Motion in RA (J2000)/cos(Dec) | +0.00388 |
Proper Motion in Dec (J2000) | -0.003466 |
Radial Velocity | -002.0km s-1 |
Trigonometric Parallax | +0.00441s |
Trigonometric Parallax Uncertainty | 0.00062s |
GCI Unit Vector in X (J2000) | 0.500114 |
GCI Unit Vector in Y (J2000) | 0.295478 |
GCI Unit Vector in Z (J2000) | 0.813989 |
Galactic Longitude | 133.19° |
Galactic Latitude
| -6.97°
|
Observational Data |
Observed Visual Magnitude (V) | 5.00 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.002 |
Observed B Magnitude | 4.93 |
Observed B-V Colour | -0.074 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.002 |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | 5.0 |
Observed Photographic Magnitude | |
Morgan Keenan (MK) Spectral Type | B8III |
One-Dimensional Spectral Class | B8 |
Position Angle | |
Year of Observation | AD |