20-Oph (Star)
Color-magnitude diagram
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.
Finder chart
Click and drag the chart above to pan around the sky, or use the mouse wheel to zoom.
Click to enlarge.
From Cambridge , 20-Oph is not observable – it will reach its highest point in the sky during daytime and is no higher than 3° above the horizon at dusk.
Begin typing the name of a town near to you, and then select the town from the list of options
which appear below.
|
Name
20-Oph
|
Object type
Star
|
Position
| Right ascension: | 16h49m50s [2] |
| Declination: | −10°46'58" [2] |
| Constellation: | Ophiuchus |
| Magnitude: | 4.64 (V) [2] 5.20 (BT) [2] 4.69 (VT) [2] |
| Distance: | 32.0 parsec 104.3 lightyrs [3] |
| B-V Color (mag): | 0.43 |
| Proper motion (speed): | 107.0 mas/yr[3] |
| Proper motion (pos ang): | 137.5° |
Derived quantities
| Absolute mag (V): | 2.12 |
Visibility from Cambridge
All times shown in Cambridge local time.