  letronne is the lava-flooded remnant of a lunar crater. the northern part of the rim is completely missing, and opens into the oceanus procellarum, forming a bay along the southwestern shore. the formation is located to the northwest of the large crater gassendi.to the west-southwest is the flooded crater billy, and north-northwest lies the smaller flamsteed. the surviving rim of letronne is now little more than a semi-circular series of ridges. the flooded, broken rim of winthrop overlies the western wall. the rim is the most intact along the eastern stretch, forming a mountainous promontory into the mare. a small cluster of central rises lie at the midpoint of the crater. a wrinkle ridge traverses the floor from north to south, and outline a portion of the missing rim. the crater floor is otherwise nearly smooth and relatively free of craterlets, with the exception of letronne b near the southeast rim. ==satellite craters== by convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to letronne. {| class="wikitable" !width="25%" style="background:#eeeeee;" |letronne !width="25%" style="background:#eeeeee;" |latitude !width="25%" style="background:#eeeeee;" |longitude !width="25%" style="background:#eeeeee;" |diameter |- |align="center"|a |align="center"|12.1Â° s |align="center"|39.1Â° w |align="center"|7&nbsp;km |- |align="center"|b |align="center"|11.2Â° s |align="center"|41.2Â° w |align="center"|5&nbsp;km |- |align="center"|c |align="center"|10.7Â° s |align="center"|38.5Â° w |align="center"|4&nbsp;km |- |align="center"|f |align="center"|9.2Â° s |align="center"|46.1Â° w |align="center"|8&nbsp;km |- |align="center"|g |align="center"|12.7Â° s |align="center"|46.5Â° w |align="center"|10&nbsp;km |- |align="center"|h |align="center"|12.6Â° s |align="center"|46.0Â° w |align="center"|4&nbsp;km |- |align="center"|k |align="center"|14.5Â° s |align="center"|43.6Â° w |align="center"|5&nbsp;km |- |align="center"|l |align
Impact_craters_on_the_Moon LQ19_quadrangle