R=2,439 km (0.3xRearth) M=3.3x1026 g (5% Mearth) a = 0.387 AU, e=0.2 Porb = 88 days Prot = 58.6 days
Until recently, nearly all information came from
Mariner 10 mission
(1974/5)
Mariner 10 Mercury Mosaic
But the ongoing Messenger
mission is improving things rapidly!
What do we see? (Movie courtesy of Messeger mission)