Identification Data |
Common Name | |
Constellation | Perseus |
Star Name | 12 Per |
Skymap Number | 2420045 |
Henry Draper (HD) Number | 16739 |
Harvard Revised (HR) Number | 788 |
SAO Number | 55793 |
Durchmusterung (DM) Number | BD+39 610 |
Washington Double Stars (WDS) Number
| 02422+4012
|
Positional Data |
Position and Proper Motion (PPM) Number | 45381 |
Right Ascension (RA) J2000 | 2h 42m 14.916s |
Declination (Dec) J2000 | +40° 11' 38.198" |
Position Uncertainty | 0.0108s |
Proper Motion in RA (J2000)/cos(Dec) | -0.00147 |
Proper Motion in Dec (J2000) | -0.182366 |
Radial Velocity | -022.5km s-1 |
Trigonometric Parallax | +0.04052s |
Trigonometric Parallax Uncertainty | 0.00125s |
GCI Unit Vector in X (J2000) | 0.580308 |
GCI Unit Vector in Y (J2000) | 0.496720 |
GCI Unit Vector in Z (J2000) | 0.645377 |
Galactic Longitude | 144.85° |
Galactic Latitude
| -17.91°
|
Observational Data |
Observed Visual Magnitude (V) | 4.90 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
Observed B Magnitude | 5.48 |
Observed B-V Colour | +0.582 |
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 | 5.0 |
Observed Photographic Magnitude | |
Morgan Keenan (MK) Spectral Type | F9V |
One-Dimensional Spectral Class | G0 |
Position Angle | |
Year of Observation | 1991. AD |