Acrab (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 , Acrab is not observable – it will reach its highest point in the sky during daytime and is 3° below the horizon at dawn.
Begin typing the name of a town near to you, and then select the town from the list of options
which appear below.
|
Name
Acrab
|
Object type
Star
|
Other names
Position
| Right ascension: | 16h05m26s [3] |
| Declination: | −19°48'19" [3] |
| Constellation: | Scorpius |
| Magnitude: Variable | 2.62 (V) [3] 2.53 (BT) [2] 2.61 (VT) [2] |
| Distance: | 123.9 parsec 404.0 lightyrs [5] |
| B-V Color (mag): | -0.07 |
| Proper motion (speed): | 24.6 mas/yr[5] |
| Proper motion (pos ang): | 192.2° |
Derived quantities
| Absolute mag (V): | -2.85 |
Visibility from Cambridge
All times shown in Cambridge local time.
Events
| 15 Feb 2031 | – Lunar occultation of Beta1 Scorpii |
| 14 Mar 2031 | – Lunar occultation of Beta1 Scorpii |
| 10 Apr 2031 | – Lunar occultation of Beta1 Scorpii |
| 08 May 2031 | – Lunar occultation of Beta1 Scorpii |
| 04 Jun 2031 | – Lunar occultation of Beta1 Scorpii |
| 02 Jul 2031 | – Lunar occultation of Beta1 Scorpii |
| 29 Jul 2031 | – Lunar occultation of Beta1 Scorpii |
| 25 Aug 2031 | – Lunar occultation of Beta1 Scorpii |