pst-so­larsys­tem – Plot the so­lar sys­tem for a spe­cific date

The pack­age uses pstricks to pro­duce di­a­grams of the vis­i­ble plan­ets, pro­jected on the plane of the eclip­tic. It is not pos­si­ble to rep­re­sent all the plan­ets in their real pro­por­tions, so only Mer­cury, Venus, Earth and Mars have their or­bits in cor­rect pro­por­tions and their rel­a­tive sizes are ob­served. Saturn and Jupiter are in the right di­rec­tion, but not in the cor­rect size.