Identification Data |
Common Name | |
Constellation | Hercules |
Star Name | 112 Her |
Skymap Number | 18520089 |
Henry Draper (HD) Number | 174933 |
Harvard Revised (HR) Number | 7113 |
SAO Number | 86521 |
Durchmusterung (DM) Number | BD+21 3582 |
Washington Double Stars (WDS) Number
|
|
Positional Data |
Position and Proper Motion (PPM) Number | 107981 |
Right Ascension (RA) J2000 | 18h 52m 16.428s |
Declination (Dec) J2000 | +21° 25' 30.511" |
Position Uncertainty | 0.0064s |
Proper Motion in RA (J2000)/cos(Dec) | -0.00052 |
Proper Motion in Dec (J2000) | -0.010166 |
Radial Velocity | -019.8km s-1 |
Trigonometric Parallax | +0.00710s |
Trigonometric Parallax Uncertainty | 0.00068s |
GCI Unit Vector in X (J2000) | 0.210489 |
GCI Unit Vector in Y (J2000) | -0.906786 |
GCI Unit Vector in Z (J2000) | 0.365285 |
Galactic Longitude | 52.27° |
Galactic Latitude
| 9.41°
|
Observational Data |
Observed Visual Magnitude (V) | 5.41 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.002 |
Observed B Magnitude | 5.33 |
Observed B-V Colour | -0.085 |
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 | 5.3 |
Observed Photographic Magnitude | 5.3 |
Morgan Keenan (MK) Spectral Type | B9II-IIIpHg |
One-Dimensional Spectral Class | B9 |
Position Angle | 138 |
Year of Observation | 1987. AD |