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Psi
Its story
Psi Scorpii is a white main-sequence star with a hidden companion that eluded astronomers for decades. The hint of its binary nature, planted by the Hipparcos satellite, was only confirmed in 2025, when the GRAVITY instrument at the VLTI finally imaged the partner: 3.4 astronomical units away, with a ten-year orbit. It shines at 156 light-years, on the curved spine of the Scorpion.
- Constellation
- Scorpius
- Apparent magnitude
- 4.93
- Distance
- 155.6 light years
- Coordinates (J2000)
- RA 243.000° · Dec -10.064°
- Catalogue
- HIP 79375 · HD 145570
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