Possible Clues:

• One of Santa's reindeer — with a long tail?
• Cleanser with the old slogan 'Nothing can hold a can to ...'
• It may orbit regularly and arrive on time
• Halley's, for example
• Halley's space traveller?
• Halley's __ (celestial visitor)
• Dancer's teammate?
• Space traveller seen to arrive on time
• One of the reindeer in 'A Visit from St Nicholas'
• Come to tea from far away and have a tail too