The white dwarf GD 394 seems to have an abnormal amount of heavy elements in its outer atmosphere and also varies in brightness with a period of 1.146 days, and no one understands why.

Object 114: George's 2020 Data Processing Project from Hell

George's Random Astronomical Object is a biweekly astronomy podcast featuring science discussions about astronomical objects at randomly selected locations in the sky.  The wide range of topics discussed in the show include stars, variable stars, variable variable stars, supermassive black holes, ultracool dwarf stars, exoplanets, howler monkeys, infrared radiation, acronyms, more acronyms, starbursts, measurements of less than 12 parsecs, jellyfish galaxies, diffuse ionized gas, and general overall weirdness.