Possible Clues:

• Arrive before tea from space
• Sleighmate of Cupid
• Flasher and streaker, bottom covered in wake?
• Cleanser or a reindeer
• Heavenly body and compiler in bed!
• Streaker with a big tail
• Astronomer's observation
• Firm satisfied with traveller covering huge mileage
• Halley discovered one
• Long distance traveller that should arrive on time