Identification Data |
Common Name | |
Constellation | Hercules |
Star Name | 2 Her |
Skymap Number | 15540080 |
Henry Draper (HD) Number | 142780 |
Harvard Revised (HR) Number | 5932 |
SAO Number | 45788 |
Durchmusterung (DM) Number | BD+43 2542 |
Washington Double Stars (WDS) Number
|
|
Positional Data |
Position and Proper Motion (PPM) Number | 55040 |
Right Ascension (RA) J2000 | 15h 54m 37.850s |
Declination (Dec) J2000 | +43° 8' 18.842" |
Position Uncertainty | 0.0067s |
Proper Motion in RA (J2000)/cos(Dec) | -0.00304 |
Proper Motion in Dec (J2000) | +0.066166 |
Radial Velocity | -010.3km s-1 |
Trigonometric Parallax | +0.00521s |
Trigonometric Parallax Uncertainty | 0.00055s |
GCI Unit Vector in X (J2000) | -0.379554 |
GCI Unit Vector in Y (J2000) | -0.623220 |
GCI Unit Vector in Z (J2000) | 0.683765 |
Galactic Longitude | 68.67° |
Galactic Latitude
| 49.87°
|
Observational Data |
Observed Visual Magnitude (V) | 5.36 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
Observed B Magnitude | 7.00 |
Observed B-V Colour | +1.636 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.006 |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | 5.5 |
Observed Photographic Magnitude | 7.3 |
Morgan Keenan (MK) Spectral Type | M3-III |
One-Dimensional Spectral Class | M0 |
Position Angle | |
Year of Observation | AD |