Canopus B is a white hole near Canopus in the Starspen galaxy . Its age is unknown, but probably dates to the galactic origin. Canopus and Canopus B are gravitationally bound and mutually orbit each other every 5.1 days. The ratio of the mass of Canopus to Canopus B is very high, 11520 to 1, with the center of mass of the binary system 79,000 km below the photosphere of Canopus. The mass of Canopus B and mass ratio explain why Canopus B passes within 40 km of the photosphere of Canopus at the near point of the orbit.
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