Magnitude 5.02 Apparent magnitude (V) 5.02 | Constellation Sagittarius | |
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The Bayer designation Chi Sagittarii (Chi Sgr, χ Sagittarii, χ Sgr) is shared by three star systems in the constellation Sagittarius. The brightest of these, χ¹ Sagittarii and χ³ Sagittarii, are separated by 0.56° on the sky. The dimmer χ² Sagittarii is located between them, 0.10° from χ¹. The Wow! signal came from the direction of these stars.
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Chi sagittarii
χ¹ Sagittarii
Chi¹ Sagittarii (Chi¹ Sgr, χ¹ Sagittarii, χ¹ Sgr) is a binary star. The primary is a spectral type A5 dwarf. The companion is approximately 0.12 arcseconds from the primary, putting it about 8 Astronomical Units away. The orbital period is 10.8 years. The combined apparent magnitude of the system is +5.02. It is approximately 220 light years from Earth.
χ² Sagittarii
Chi² Sagittarii (Chi² Sgr, χ² Sagittarii, χ² Sgr) is a spectral type B7 subgiant which has an apparent magnitude of +7.26. It is approximately 1200 light years from Earth.
χ³ Sagittarii
Chi³ Sagittarii (Chi³ Sgr, χ³ Sagittarii, χ³ Sgr) is a spectral type K3 giant which has an apparent magnitude of +5.45. It is 506 light years from Earth.