HD 128311
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Your system is HD 128311. Its host star is located in the constellation of The Herdsman. It is visible through binoculars.

Hd 128311 has 3 planets:

  • Hd 128311 B, discovered in 2002, has a mass 692.9 times the mass of Earth and an orbital period of 448.6 days.
  • Hd 128311 C, discovered in 2005, has a mass 1020.2 times the mass of Earth and an orbital period of 919 days.
  • Hd 155358 C, discovered in 2007, has a mass 260.6 times the mass of Earth and an orbital period of 391.9 days.

The star and the planets each need names, and YOU may be able to name them! Check back here in December to find out.

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