Identification Data |
Common Name | |
Constellation | Ophiuchus |
Star Name | 72 Oph |
Skymap Number | 18070072 |
Henry Draper (HD) Number | 165777 |
Harvard Revised (HR) Number | 6771 |
SAO Number | 123142 |
Durchmusterung (DM) Number | BD+09 3564 |
Washington Double Stars (WDS) Number
| 18073+0934
|
Positional Data |
Position and Proper Motion (PPM) Number | 165207 |
Right Ascension (RA) J2000 | 18h 7m 20.984s |
Declination (Dec) J2000 | +9° 33' 49.850" |
Position Uncertainty | 0.0077s |
Proper Motion in RA (J2000)/cos(Dec) | -0.00417 |
Proper Motion in Dec (J2000) | +0.079766 |
Radial Velocity | -023.9km s-1 |
Trigonometric Parallax | +0.03940s |
Trigonometric Parallax Uncertainty | 0.00083s |
GCI Unit Vector in X (J2000) | 0.031618 |
GCI Unit Vector in Y (J2000) | -0.985594 |
GCI Unit Vector in Z (J2000) | 0.166147 |
Galactic Longitude | 36.59° |
Galactic Latitude
| 14.09°
|
Observational Data |
Observed Visual Magnitude (V) | 3.72 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
Observed B Magnitude | 3.87 |
Observed B-V Colour | +0.149 |
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 | 3.7 |
Observed Photographic Magnitude | |
Morgan Keenan (MK) Spectral Type | A4IVs |
One-Dimensional Spectral Class | A3 |
Position Angle | 299 |
Year of Observation | 1934. AD |