Identification Data |
Common Name | |
Constellation | Ophiuchus |
Star Name | 8phi Oph |
Skymap Number | 16310024 |
Henry Draper (HD) Number | 148786 |
Harvard Revised (HR) Number | 6147 |
SAO Number | 159963 |
Durchmusterung (DM) Number | SD-16 4298 |
Washington Double Stars (WDS) Number
| 16311-1637
|
Positional Data |
Position and Proper Motion (PPM) Number | 231795 |
Right Ascension (RA) J2000 | 16h 31m 8.367s |
Declination (Dec) J2000 | -16° 36' 45.837" |
Position Uncertainty | 0.0082s |
Proper Motion in RA (J2000)/cos(Dec) | -0.00310 |
Proper Motion in Dec (J2000) | -0.038066 |
Radial Velocity | -034.4km s-1 |
Trigonometric Parallax | +0.01553s |
Trigonometric Parallax Uncertainty | 0.00077s |
GCI Unit Vector in X (J2000) | -0.362304 |
GCI Unit Vector in Y (J2000) | -0.887128 |
GCI Unit Vector in Z (J2000) | -0.285901 |
Galactic Longitude | 0.13° |
Galactic Latitude
| 21.08°
|
Observational Data |
Observed Visual Magnitude (V) | 4.29 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.002 |
Observed B Magnitude | 5.22 |
Observed B-V Colour | +0.929 |
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 | 4.0 |
Observed Photographic Magnitude | 5.4 |
Morgan Keenan (MK) Spectral Type | G8+IIIa |
One-Dimensional Spectral Class | K0 |
Position Angle | 37 |
Year of Observation | 1916. AD |