Identification Data |
Common Name | |
Constellation | Hercules |
Star Name | 68 Her |
Skymap Number | 17170071 |
Henry Draper (HD) Number | 156633 |
Harvard Revised (HR) Number | 6431 |
SAO Number | 65913 |
Durchmusterung (DM) Number | BD+33 2864 |
Washington Double Stars (WDS) Number
| 17173+3306
|
Positional Data |
Position and Proper Motion (PPM) Number | 80086 |
Right Ascension (RA) J2000 | 17h 17m 19.567s |
Declination (Dec) J2000 | +33° 6' 0.361" |
Position Uncertainty | 0.0069s |
Proper Motion in RA (J2000)/cos(Dec) | -0.00029 |
Proper Motion in Dec (J2000) | -0.005766 |
Radial Velocity | -021.0km s-1 |
Trigonometric Parallax | +0.00377s |
Trigonometric Parallax Uncertainty | 0.00056s |
GCI Unit Vector in X (J2000) | -0.155083 |
GCI Unit Vector in Y (J2000) | -0.823238 |
GCI Unit Vector in Z (J2000) | 0.546103 |
Galactic Longitude | 56.41° |
Galactic Latitude
| 33.14°
|
Observational Data |
Observed Visual Magnitude (V) | 4.81 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.009 |
Observed B Magnitude | 4.64 |
Observed B-V Colour | -0.169 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.010 |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | |
Observed Photographic Magnitude | 3.0 |
Morgan Keenan (MK) Spectral Type | B1.5Vp+B5III |
One-Dimensional Spectral Class | B3 |
Position Angle | 59 |
Year of Observation | 1943. AD |