Identification Data |
Common Name | |
Constellation | Ophiuchus |
Star Name | 68 Oph |
Skymap Number | 18010164 |
Henry Draper (HD) Number | 164577 |
Harvard Revised (HR) Number | 6723 |
SAO Number | 123035 |
Durchmusterung (DM) Number | BD+01 3560 |
Washington Double Stars (WDS) Number
| 18018+0118
|
Positional Data |
Position and Proper Motion (PPM) Number | 165024 |
Right Ascension (RA) J2000 | 18h 1m 45.198s |
Declination (Dec) J2000 | +1° 18' 18.275" |
Position Uncertainty | 0.0096s |
Proper Motion in RA (J2000)/cos(Dec) | +0.00103 |
Proper Motion in Dec (J2000) | -0.013667 |
Radial Velocity | +006.0km s-1 |
Trigonometric Parallax | +0.01231s |
Trigonometric Parallax Uncertainty | 0.00083s |
GCI Unit Vector in X (J2000) | 0.007648 |
GCI Unit Vector in Y (J2000) | -0.999711 |
GCI Unit Vector in Z (J2000) | 0.022776 |
Galactic Longitude | 28.38° |
Galactic Latitude
| 11.64°
|
Observational Data |
Observed Visual Magnitude (V) | 4.44 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
Observed B Magnitude | 4.47 |
Observed B-V Colour | +0.033 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.004 |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | 4.4 |
Observed Photographic Magnitude | 4.4 |
Morgan Keenan (MK) Spectral Type | A2Vn |
One-Dimensional Spectral Class | A2 |
Position Angle | 111 |
Year of Observation | 1989. AD |