Welcome to the Pavilion, where one sits back, relaxes, eats, drinks, and chats with others in between the risking life and limb for various reasons.
LEt's see here: Jupiter, Juno, Neptune, Pluto, Ceres, Apollo, Mercury, Venus, Mars, Diana, Minerva, and Vulcan. (All but a couple from memory)
I see someone read "The Lost Hero". Anyways the planets are named after the more well known roman gods, so it shouldn't be that hard. If all else fails, yay for the internet.
I am a rick riodan nut I've read all the percy jackson books (including the demigod files and the world book day short story), the heroes of Olympus series and finally the Kane chronicles (similar to Percy Jackson but with Egyptian gods). Just ask me anything about them and I shall answer. Oh and snow have you taken into account Demeter, Hephaestus, Dionysus and Hestia aka. The Greek gods of agriculture, blacksmiths, wine and home + hearth.
All I was really doing was incorporating some of pj's personality and backstory and putting it into my character and not really bothered about which one I got.