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HIP 2689

An faint orange star in the southern regions of Cassiopeia, near that constellation's border with Andromeda. It was catalogued by the HIPPARCOS mission, whose parallax measurements suggested that it lay some 1,400 light years from the Sun. The more recent Gaia measurement suggests that it lies even further than this from the Solar System, at a distance approacing 1,900 light years (though measuring parallax at such distances is extremely difficult, and these figures each incorporate a substantial margin of error).

The star itself is some thirty times more luminous than the Sun, but its huge distance gives it an apparent magnitude of +9.3: far, far too faint to see with the naked eye. Physically the star is a K-type orange giant, comparable with (for example) Pollux in Gemini. If it lay at a similar distance to Pollux, HIP 2689 would shine just as brightly in Earth's sky.

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