O-Sgr (Star)
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.
From Cambridge , O-Sgr is visible in the dawn sky, rising at 02:10 (EDT) and reaching an altitude of 21° above the south-eastern horizon before fading from view as dawn breaks at around 05:07.
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Name
O-Sgr
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Object type
Star
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Other names
Position
| Right ascension: | 19h04m41s [4] |
| Declination: | −21°44'30" [4] |
| Constellation: | Sagittarius |
| Magnitude: Variable | 3.75 (V) [2] 5.05 (BT) [2] 3.86 (VT) [2] 3.48 (G) [4] 4.04 (BP) [4] 2.82 (RP) [4] |
| Distance: | 42.0 parsec 136.9 lightyrs [4] |
| B-V Color (mag): | 1.01 |
| Proper motion (speed): | 97.0 mas/yr[4] |
| Proper motion (pos ang): | 127.0° |
Derived quantities
| Absolute mag (V): | 0.64 |
Sources