Identification Data |
Common Name | |
Constellation | Hercules |
Star Name | 42 Her |
Skymap Number | 16380132 |
Henry Draper (HD) Number | 150450 |
Harvard Revised (HR) Number | 6200 |
SAO Number | 46210 |
Durchmusterung (DM) Number | BD+49 2531 |
Washington Double Stars (WDS) Number
| 16387+4856
|
Positional Data |
Position and Proper Motion (PPM) Number | 55566 |
Right Ascension (RA) J2000 | 16h 38m 44.845s |
Declination (Dec) J2000 | +48° 55' 42.033" |
Position Uncertainty | 0.0060s |
Proper Motion in RA (J2000)/cos(Dec) | -0.00488 |
Proper Motion in Dec (J2000) | +0.026866 |
Radial Velocity | -055.2km s-1 |
Trigonometric Parallax | +0.00867s |
Trigonometric Parallax Uncertainty | 0.00046s |
GCI Unit Vector in X (J2000) | -0.228079 |
GCI Unit Vector in Y (J2000) | -0.616143 |
GCI Unit Vector in Z (J2000) | 0.753888 |
Galactic Longitude | 75.61° |
Galactic Latitude
| 41.58°
|
Observational Data |
Observed Visual Magnitude (V) | 4.88 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
Observed B Magnitude | 6.43 |
Observed B-V Colour | +1.547 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.005 |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | 5.1 |
Observed Photographic Magnitude | |
Morgan Keenan (MK) Spectral Type | M2.5IIIab |
One-Dimensional Spectral Class | M0 |
Position Angle | 92 |
Year of Observation | 1958. AD |