Mu Scorpii
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Scorpius |
| Right ascension | 16h 51m 52.7s |
| Declination | −38° 02' 51" |
| Apparent magnitude (V) | +3.00 |
| Distance | 822 ± 248 ly (252 ± 76 pc) |
| Spectral type | B1.5IV + B6.5V |
| Other designations | |
The Bayer designation Mu Scorpii (μ Sco / μ Scorpii) is shared by two star systems, μ¹ Scorpii and μ² Scorpii, in the constellation Scorpius. They are separated by 0.10° on the sky.
μ¹ Scorpii
Mu-1 Scorpii is an eclipsing binary of the Beta Lyrae type. Both components are blue-white B-type stars. The primary is a subgiant, while the companion is a cooler dwarf. Due to occultation of the primary by the dimmer companion, the apparent magnitude of the system varies from +2.80 to +3.08 over the course of the binary's orbit, which takes 1.4402 days to complete. The system is approximately 822 light years from Earth.
μ² Scorpii
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Scorpius |
| Right ascension | 16h 52m 20.6s |
| Declination | −38° 01' 3" |
| Apparent magnitude (V) | +3.56 |
| Distance | 517 ± 70 ly (158 ± 22 pc) |
| Spectral type | B2IV |
| Other designations | |
Mu-2 Scorpii is a blue-white B-type subgiant with an apparent magnitude of +3.56. It is approximately 517 light years from Earth.
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