Identification Data |
Common Name | |
Constellation | Ophiuchus |
Star Name | 57mu Oph |
Skymap Number | 17370178 |
Henry Draper (HD) Number | 159975 |
Harvard Revised (HR) Number | 6567 |
SAO Number | 141772 |
Durchmusterung (DM) Number | SD-08 4472 |
Washington Double Stars (WDS) Number
|
|
Positional Data |
Position and Proper Motion (PPM) Number | 200882 |
Right Ascension (RA) J2000 | 17h 37m 50.712s |
Declination (Dec) J2000 | -8° 7' 7.575" |
Position Uncertainty | 0.0077s |
Proper Motion in RA (J2000)/cos(Dec) | -0.00079 |
Proper Motion in Dec (J2000) | -0.020466 |
Radial Velocity | -018.5km s-1 |
Trigonometric Parallax | +0.00594s |
Trigonometric Parallax Uncertainty | 0.00081s |
GCI Unit Vector in X (J2000) | -0.095551 |
GCI Unit Vector in Y (J2000) | -0.985355 |
GCI Unit Vector in Z (J2000) | -0.141226 |
Galactic Longitude | 17.00° |
Galactic Latitude
| 12.34°
|
Observational Data |
Observed Visual Magnitude (V) | 4.62 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
Observed B Magnitude | 4.72 |
Observed B-V Colour | +0.095 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.003 |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | 4.3 |
Observed Photographic Magnitude | 4.6 |
Morgan Keenan (MK) Spectral Type | B8II-IIIp:Mn |
One-Dimensional Spectral Class | B8 |
Position Angle | |
Year of Observation | AD |