Arkab-Posterior (Star)
Color-magnitude diagram
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.
Finder chart
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From Cambridge , Arkab-Posterior is not readily observable since it lies so far south that it will never rise more than 2° above the horizon.
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|
Name
Arkab-Posterior
|
Object type
Star
|
Other names
Position
| Right ascension: | 19h23m13s [4] |
| Declination: | −44°48'00" [4] |
| Constellation: | Sagittarius |
| Magnitude: | 4.28 (V) [2] 4.67 (BT) [2] 4.31 (VT) [2] 4.18 (G) [4] 4.36 (BP) [4] 3.84 (RP) [4] |
| Distance: | 42.8 parsec 139.5 lightyrs [4] |
| B-V Color (mag): | 0.30 |
| Proper motion (speed): | 107.6 mas/yr[4] |
| Proper motion (pos ang): | 120.0° |
Derived quantities
| Absolute mag (V): | 1.12 |
Visibility from Cambridge
All times shown in Cambridge local time.