3200 Phaethon 3200 Phaethon 3200 Phaethon ( , sometimes incorrectly spelled Phaeton), provisional designation , is an Apollo asteroid with an orbit that brings it closer to the Sun than any other named asteroid (though there are numerous unnamed asteroids with smaller perihelia, such as ). For this reason, it was named after the Greek myth of Phaëthon, son of the sun god Helios. It is in diameter and is the parent body of the Geminids meteor shower of mid-December. With an observation arc of 30+ years, it has a very well determined orbit. The 2017 Earth approach distance of about 10
Geminids to 03:00 local time. Geminids were first observed in 1862, much more recently than other showers such as the Perseids (36 AD) and Leonids (902 AD). The meteors in this shower appear to come from the radiant in the constellation Gemini (hence the shower's name). However, they can appear almost anywhere in the night sky, and often appear yellowish in hue. Well north of the equator, the radiant rises about sunset, reaching a usable elevation from the local evening hours onwards. In the southern hemisphere, the radiant appears only around local midnight or so. Observers in the northern hemisphere will