Tau

Its story

Tau Sagittarii plays a discreet role in a famous region: it marks the eastern flank of the «Teapot», the asterism at the heart of the Archer that points straight to the centre of the Milky Way. Its orange light, that of a K-type giant, travels some 122 years to reach us. Astronomical memory keeps it through chance: in 1977 the Big Ear radio telescope was scanning nearby when it caught the enigmatic Wow! signal.

Constellation: Sagittarius
Apparent magnitude: 3.32
Distance: 121.6 light years
Coordinates (J2000): RA 286.735° · Dec -27.670°
Catalogue: HIP 93864 · HD 177716

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