The star σ-Oph
Color-magnitude diagram
Red-band image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.
Finder chart
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From Seattle , σ-Oph will become visible around 20:22 (PDT) as the dusk sky fades, 40° above your south-western horizon. It will then sink towards the horizon, setting at 00:58.
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|
Name
σ-Oph
|
Object Type
Star
|
Position
| Constellation: | Ophiuchus |
| Magnitude: Variable | 4.33 (V) [1] 6.29 (BT) [1] 4.50 (VT) [1] 3.74 (G) [2] 4.66 (BP) [2] 3.01 (RP) [2] |
| B-V Color (mag): | 1.53 |
| Right ascension: | 17h26m30s [2] |
| Declination: | +04°08'25" [2] |
| Distance: | 260.2 parsec 848.3 lightyrs [2] |
| Proper motion (speed): | 7.3 mas/yr [2] |
| Proper motion (pos ang): | 12.5° |
Derived Quantities
| Absolute mag (V): | -2.74 |