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 Ashburn , σ-Oph is visible all night. It will become visible at around 21:59 (EDT) as the dusk sky fades, 42° above your south-eastern horizon. It will be lost to dawn twilight at around 04:25, 25° above your western horizon.
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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] 3.01 (RP)[2] 3.74 (G)[2] 4.66 (BP)[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 |