Tau2 Gruis
Binary star in Grus discovered by W.H. van den Bos in 1944.
Tau2 Gruis (τ2 Gruis) is a binary star in Grus with a combined apparent magnitude of 6.71, challenging naked-eye visibility. Discovered by W.H. van den Bos in 1944, the system lies 146 light-years away and is slowly receding. Its blended stellar classification is F6/8 V:, though the luminosity class is uncertain.
Quick Facts
- Combined apparent magnitude
- 6.71
- Distance
- 146 light-years
- Radial velocity
- receding (heliocentric)
- Interstellar extinction
- 0.12 magnitudes
- Combined absolute magnitude
- +3.43
- Primary apparent magnitude
- 7.30
- Secondary apparent magnitude
- 7.50
- Estimated orbital period
- 7.423 years
Facts from the source article.
More in Bright Stars by Bayer Designation: Binary and Multiple Stars
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