Ash Observatory Lunar 100 1-50

Click image for full size	L	Feature Name	Significance	Latitude Deg's	Longitude Deg's	Diameter (km)	Rükl Chart
	1	Moon	Large satellite	-	-	3,476	-
	2	Earthshine	Twice reflected sunlight	-	-	-	-
	3	Mare/highland dichotomy	Two material with distict compositions	-	-	-	-
	4	Apennines	Imbrium basin rim	18.9N	3.7W	70	22
	5	Copernicus	Archetypal large complex crater	9.7N	20.1W	93	31
	6	Tycho	Large rayed crater with impact melts	43.4S	11.1W	85	64
	7	Altai Scarp	Nectaris basin rim	24.3S	22.6E	425	57
	8	Theophilus, Cyrilus, Catharina	Crater sequence illustrating stages of degradation	13.2S	24.0E	-	46, 57
	9	Clavius	Lacks basin features in spite of its size	58.8S	14.1W	225	72
	10	Mare Crisium	Mare contained in large circular basin	18.0N	59.0E	540	26, 27, 37, 38
	11	Aristarchus	Very bright crater with dark bands on it	23.7N	47.4W	40	18
	12	Proclus	Oblique-impact rays	16.1N	46.8E	28	26
	13	Gassendi	Floor-fractured crater	17.6S	40.1W	101	52
	14	Sinus Iridum	Very large crater with missing rim	45.0N	32.0W	260	10
	15	Straight Wall	Best example of a lunar fault	21.8S	7.8W	110	54
	16	Petavius	Crater with domed & fractured floor	25.1S	60.4E	177	59
	17	Schroters Valley	Gaint sinuous rille	26.2N	50.8W	168	18
	18	Mare Serenitatis Dark Edges	Distinct mare areas with different compositions	17.8N	23.0E	N/A	24
	19	Alpine Valley	Lunar garben	49.0N	3.0E	165	4
	20	Posidonius	Floor-fractured crater	31.8N	29.9E	95	14
	21	Fracastirius	Crater with subsided & fractured floor	21.5S	33.2E	124	58
	22	Aristarchus Plateau	Mysterious uplifted mantled with pyrolastics	26.0N	51.0W