div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imageimg data-url=documentnasa-19940701-from-lunar-orbiter-tracking-data-staff-members-con-structedhtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: NASA19940701 · From lunar orbiter tracking data staff members con- structed representations of the moons gravitational field These mathematlcd models proved invaluablë loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader034fdocumentsusreader034viewer20220429095f3ba5406248b5010f38afbehtml5thumbnails1jpg width=140 height=200 divdiv