Possible Clues:

• Relatively cool heavenly body
• Aldebaran or Arcturus
• Arcturus, e.g., spectrally
• Orange dwarf
• Pollux or Arcturus, to an astronomer
• It's cooler than our sun
• Orange-to-red star, as Aldebaran
• Arcturus or Pollux, to an astronomer
• Relatively cool sun