Radiation astronomy/Planets/Classicals/Seven Classical Planets
The ancients recognized seven moving objects in the heavens (with the naked eye): Moon, Mercury, Venus, Sun, Mars, Jupiter, and Saturn. These are often referred to as the Seven Classical Planets or Classical planets.
"Astronomically, the visible Helios occupies the central position among the seven planets - Kronos, Zeus, Ares, Helios, Aphrodite, Hermes, and Selene, in a descending series."
1.Jump up ↑ Roger Pack (1946). "Notes on the Caesars of Julian". Transactions and Proceedings of the American Philological Association 77: 151-7.