Pi Scorpii
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| Observation data Epoch J2000.0 |
|
|---|---|
| Constellation (pronunciation) |
Scorpius |
| Right ascension | 15h 58m 51.1s |
| Declination | −26° 06' 51" |
| Apparent magnitude (V) | +2.89 |
| Distance | 459 ± 54 ly (141 ± 17 pc) |
| Spectral type | B1V + B2V |
| Other designations | |
Pi Scorpii is a triple star system in the constellation Scorpius. It is approximately 459 light years from Earth.
Pi Scorpii A is a contact binary of the Beta Lyrae type. Both its members are hot, blue-white B-type dwarfs. Together they have a mean apparent magnitude of +2.89. Their rotation period is 1.57 days and they are separated by a distance of only 15 solar radii. Rotation causes their apparent magnitude to vary between +2.87 and +2.92.
They are orbited by a more distant companion designated Pi Scorpii B, which has an apparent magnitude of +12.2. This distant companion is separated from the primary binary by 50 arcseconds, putting it at least 7000 Astronomical Units away.
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