I saw that one when it first aired. Wasn't it lovely? The CGI was wonderful, and very compelling. It definitely gave me a renewed interest in sending people to these places instead of just robots.<br /><br />Total count from my sources:<br /><br />Confirmed satellites of things commonly referred to as major planets:<br />Earth: 1 moon<br />Mars: 2 moons<br />Jupiter: 63 moons<br />Saturn: 47 moons<br />Uranus: 27 moons<br />Neptune: 13 moons<br />Pluto: 3 moons (the talk of two moons is two <i>new</i> moons, in addition to Charon <img src="/images/icons/wink.gif" /> )<br /><br />I don't want to get into the "is Pluto a planet" debate right now. <img src="/images/icons/tongue.gif" /> At any rate, this gives us 156 moons just for the traditional nine planets! <img src="/images/icons/shocked.gif" /><br /><br />Confirmed satellites of NEOs:<br />3671 Dionysus: 1 moon<br />2000 DP107: 1 moon<br /><br />Confirmed satellites of main-belt asteroids:<br />22 Kalliope: 1 moon<br />45 Eugenie: 1 moon<br />87 Sylvia: 2 moons<br />90 Antiope: 1 moon<br />107 Camilla: 1 moon<br />121 Hermione: 1 moon<br />130 Elektra: 1 moon<br />243 Ida: 1 moon (first satellite of a minor planet to be discovered)<br />283 Emma: 1 moon<br />379 Huenna: 1 moon<br />1509 Esclangona: 1 moon<br />3749 Balam: 1 moon<br /><br />Confirmed satellites of Jupiter Trojans:<br />617 Patroclus: 1 moon<br /><br />Confirmed satellites of Trans-Neptunian Objects:<br />26308 1998 SM165: 1 moon<br />47171 1999 TC36: 1 moon<br />1998 WW31: 1 moon<br />2003 UB313: 1 moon<br /><br />Including the minor planets, it's 176 confirmed so far. That's a lot of satellites.<br /><br />Note: by "confirmed" I mean that the IAU has conferred a formal designation on it. This may or may not include an actual name. I have not included artificial satellites. Some of the minor planets in the list do not have names, and some don't even have numbers yet. <div class="Discussion_UserSignature"> <p> </p><p><font color="#666699"><em>"People assume that time is a strict progression of cause to effect, but actually from a non-linear, non-subjective viewpoint it's more like a big ball of wibbly wobbly . . . timey wimey . . . stuff."</em> -- The Tenth Doctor, "Blink"</font></p> </div>