DY, D. Y., Dy, or dy may refer to:

In science and technology, and mathematics

Astronomy

  • DY Persei, a variable star in the Perseus constellation
  • DY Persei variable, a subclass of R Coronae Borealis variables
  • DY Eridani, a triple star system less than 16.5 light years away from Earth

Other sciences

Businesses

People

Places

Other uses

See also

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