An Icy Leftover Planetesimal Orbiting the Sun Is?

Answer

An icy leftover planetesimal orbiting the sun is a comet. Comets are celestial bodies that are made of ice, frozen gases, rock, and dust. One famous comet, Halley's Comet, only becomes visible from Earth every 76 years.
Q&A Related to "An Icy Leftover Planetesimal Orbiting the Sun..."
Comet.
http://wiki.answers.com/Q/What_is_an_icy_leftover_...
This is more commonly known as an asteroid. Hope this
http://www.chacha.com/question/what-is-an-icy-left...
They are asteroids. Many orbit in the asteroid belt between Mars and Jupiter. Many more share Jupiter's orbit. and a few are found elsewhere in the solar system all the way from Mercury
http://answers.yahoo.com/question/index?qid=201305...
A comet is a body that revolves around the sun and develops a coma and sometimes a tail when near the sun. In order to produce this phenomenon, you need some substance in the body
http://answers.yahoo.com/question/index?qid=201001...
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