Identification Data |
Common Name | |
Constellation | Ophiuchus |
Star Name | 61 Oph |
Skymap Number | 17440130 |
Henry Draper (HD) Number | 161270 |
Harvard Revised (HR) Number | 6609 |
SAO Number | 122690 |
Durchmusterung (DM) Number | BD+02 3390 |
Washington Double Stars (WDS) Number
| 17446+0235
|
Positional Data |
Position and Proper Motion (PPM) Number | 164510 |
Right Ascension (RA) J2000 | 17h 44m 34.092s |
Declination (Dec) J2000 | +2° 34' 45.986" |
Position Uncertainty | 0.0300s |
Proper Motion in RA (J2000)/cos(Dec) | +0.00048 |
Proper Motion in Dec (J2000) | +0.013667 |
Radial Velocity | -031.0km s-1 |
Trigonometric Parallax | +0.00709s |
Trigonometric Parallax Uncertainty | 0.00274s |
GCI Unit Vector in X (J2000) | -0.067215 |
GCI Unit Vector in Y (J2000) | -0.996723 |
GCI Unit Vector in Z (J2000) | 0.045005 |
Galactic Longitude | 27.50° |
Galactic Latitude
| 16.04°
|
Observational Data |
Observed Visual Magnitude (V) | 6.16 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | |
Observed B Magnitude | 6.29 |
Observed B-V Colour | +0.131 |
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 | 6.3 |
Observed Photographic Magnitude | 5.6 |
Morgan Keenan (MK) Spectral Type | A1IV-V |
One-Dimensional Spectral Class | A0 |
Position Angle | 93 |
Year of Observation | 1968. AD |