Identification Data |
Common Name | |
Constellation | Hercules |
Star Name | 75rho Her |
Skymap Number | 17230117 |
Henry Draper (HD) Number | 157779 |
Harvard Revised (HR) Number | 6485 |
SAO Number | 66001 |
Durchmusterung (DM) Number | BD+37 2878 |
Washington Double Stars (WDS) Number
| 17237+3709
|
Positional Data |
Position and Proper Motion (PPM) Number | 400231 |
Right Ascension (RA) J2000 | 17h 23m 40.944s |
Declination (Dec) J2000 | +37° 8' 45.407" |
Position Uncertainty | 0.0079s |
Proper Motion in RA (J2000)/cos(Dec) | -0.00323 |
Proper Motion in Dec (J2000) | +0.009267 |
Radial Velocity | -021.0km s-1 |
Trigonometric Parallax | +0.00812s |
Trigonometric Parallax Uncertainty | 0.00061s |
GCI Unit Vector in X (J2000) | -0.125785 |
GCI Unit Vector in Y (J2000) | -0.787113 |
GCI Unit Vector in Z (J2000) | 0.603847 |
Galactic Longitude | 61.44° |
Galactic Latitude
| 32.71°
|
Observational Data |
Observed Visual Magnitude (V) | 4.51 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.005 |
Observed B Magnitude | 4.49 |
Observed B-V Colour | -0.024 |
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 | 4.5 |
Observed Photographic Magnitude | 4.5 |
Morgan Keenan (MK) Spectral Type | B9.5III |
One-Dimensional Spectral Class | A0 |
Position Angle | 2 |
Year of Observation | 1991. AD |