195:
961:
25:
848:
166:
The Ld type is a grouping proposed in the SMASS classification for asteroids with an L-like flat spectrum longwards of 0.75 μm, but even redder in visible wavelengths, like the
997:
881:
896:
310:
278:
347:
325:
990:
502:
487:
410:
552:
497:
492:
447:
415:
305:
457:
250:
1262:
983:
1267:
1114:
901:
509:
108:
128:
with a strongly reddish spectrum shortwards of 0.75 μm, and a featureless flat spectrum longwards of this. In comparison with the
42:
89:
1046:
927:
46:
61:
1205:
863:
273:
295:
68:
1031:
873:
541:
1195:
1185:
342:
35:
1190:
290:
199:
75:
1026:
1210:
1094:
1006:
683:
572:
563:
365:
243:
223:
144:
140:
57:
1131:
1036:
886:
300:
1104:
922:
482:
132:, they exhibit a more reddish spectrum at visible wavelengths and a flat spectrum in the infrared.
964:
236:
1089:
1041:
891:
422:
320:
82:
1215:
858:
1136:
1079:
1064:
853:
820:
815:
805:
800:
779:
774:
750:
740:
735:
730:
725:
720:
701:
696:
691:
671:
666:
661:
656:
651:
646:
641:
627:
622:
617:
612:
607:
600:
595:
590:
585:
580:
546:
474:
437:
332:
315:
175:
167:
136:
129:
1151:
1119:
1084:
442:
395:
385:
283:
1256:
1175:
1074:
1069:
464:
432:
427:
390:
337:
152:
148:
1241:
1014:
952:
917:
469:
375:
171:
1231:
1180:
1141:
932:
514:
380:
147:, although previous studies had noted the unusual spectra of two of its members
24:
1200:
1146:
1236:
1126:
975:
405:
370:
196:"JPL Small-Body Database Search Engine: "spectral type equals L (SMASSII)""
1056:
840:
533:
524:
357:
259:
125:
158:
There are 41 asteroids classified as L-types in the SMASS taxonomy.
1167:
947:
979:
232:
18:
228:
1224:
1166:
1103:
1055:
1013:
910:
872:
839:
682:
571:
562:
532:
523:
356:
266:
49:. Unsourced material may be challenged and removed.
135:These asteroids were described as "featureless"
991:
244:
174:, although it has also been classified as an
8:
143:. The L-type was formally introduced in the
1019:
998:
984:
976:
568:
529:
251:
237:
229:
109:Learn how and when to remove this message
187:
810:
481:Outer Solar System, does not include
7:
47:adding citations to reliable sources
14:
960:
959:
454:Between Earth and the main belt
23:
849:Asteroids visited by spacecraft
34:needs additional citations for
1:
16:Relatively uncommon asteroids
1284:
1263:Asteroid spectral classes
1022:
1007:Small Solar System bodies
943:
897:Discovering observatories
200:JPL Solar System Dynamics
1268:L-type asteroids (SMASS)
279:Physical characteristics
124:are relatively uncommon
224:Asteroid spectral types
1132:Trans-Neptunian object
928:Asteroids in astrology
483:distant minor planets
343:Palomar–Leiden survey
301:Gravitational keyhole
141:Tholen classification
1105:Distant minor planet
923:Asteroids in fiction
170:. An example may be
145:SMASS classification
43:improve this article
402:Interior to Earth
1250:
1249:
1162:
1161:
1047:Meanings of names
973:
972:
835:
834:
831:
830:
274:Notable asteroids
162:Ld-type asteroids
119:
118:
111:
93:
58:"L-type asteroid"
1275:
1020:
1000:
993:
986:
977:
963:
962:
569:
530:
503:Neptune-crossers
488:Jupiter-crossers
475:Active asteroids
411:Mercury-crossers
311:Close approaches
291:Impact avoidance
253:
246:
239:
230:
211:
210:
208:
206:
192:
122:L-type asteroids
114:
107:
103:
100:
94:
92:
51:
27:
19:
1283:
1282:
1278:
1277:
1276:
1274:
1273:
1272:
1253:
1252:
1251:
1246:
1220:
1158:
1099:
1051:
1009:
1004:
974:
969:
939:
906:
868:
827:
678:
558:
519:
498:Uranus-crossers
493:Saturn-crossers
396:Neptune trojans
386:Jupiter trojans
352:
262:
257:
220:
215:
214:
204:
202:
194:
193:
189:
184:
164:
115:
104:
98:
95:
52:
50:
40:
28:
17:
12:
11:
5:
1281:
1279:
1271:
1270:
1265:
1255:
1254:
1248:
1247:
1245:
1244:
1239:
1234:
1228:
1226:
1222:
1221:
1219:
1218:
1213:
1208:
1206:Near-parabolic
1203:
1198:
1193:
1188:
1183:
1178:
1172:
1170:
1164:
1163:
1160:
1159:
1157:
1156:
1155:
1154:
1152:Scattered disc
1149:
1144:
1139:
1129:
1124:
1123:
1122:
1120:Neptune trojan
1117:
1109:
1107:
1101:
1100:
1098:
1097:
1095:Spectral types
1092:
1087:
1085:Jupiter trojan
1082:
1077:
1072:
1067:
1061:
1059:
1053:
1052:
1050:
1049:
1044:
1039:
1034:
1029:
1023:
1017:
1011:
1010:
1005:
1003:
1002:
995:
988:
980:
971:
970:
968:
967:
956:
955:
950:
944:
941:
940:
938:
937:
936:
935:
925:
920:
914:
912:
908:
907:
905:
904:
902:Space missions
899:
894:
889:
884:
878:
876:
870:
869:
867:
866:
861:
856:
851:
845:
843:
837:
836:
833:
832:
829:
828:
826:
825:
824:
823:
818:
813:
808:
803:
793:
792:
791:
788:
785:
782:
771:
770:
769:
768:
765:
762:
759:
756:
753:
748:
743:
738:
733:
728:
718:
717:
716:
713:
710:
707:
704:
699:
688:
686:
680:
679:
677:
676:
675:
674:
669:
664:
659:
654:
649:
644:
633:
632:
631:
630:
625:
620:
610:
605:
604:
603:
598:
593:
588:
577:
575:
566:
560:
559:
557:
556:
549:
544:
538:
536:
527:
525:Classification
521:
520:
518:
517:
512:
507:
506:
505:
500:
495:
490:
479:
478:
477:
472:
462:
461:
460:
452:
451:
450:
448:Earth-crossers
445:
440:
435:
430:
420:
419:
418:
416:Venus-crossers
413:
408:
400:
399:
398:
393:
391:Uranus trojans
388:
383:
378:
373:
362:
360:
354:
353:
351:
350:
348:Contact binary
345:
340:
335:
330:
329:
328:
323:
313:
308:
303:
298:
293:
288:
287:
286:
284:dynamic method
276:
270:
268:
264:
263:
258:
256:
255:
248:
241:
233:
227:
226:
219:
216:
213:
212:
186:
185:
183:
180:
163:
160:
117:
116:
31:
29:
22:
15:
13:
10:
9:
6:
4:
3:
2:
1280:
1269:
1266:
1264:
1261:
1260:
1258:
1243:
1240:
1238:
1235:
1233:
1230:
1229:
1227:
1223:
1217:
1214:
1212:
1209:
1207:
1204:
1202:
1199:
1197:
1194:
1192:
1189:
1187:
1184:
1182:
1179:
1177:
1174:
1173:
1171:
1169:
1165:
1153:
1150:
1148:
1145:
1143:
1140:
1138:
1135:
1134:
1133:
1130:
1128:
1125:
1121:
1118:
1116:
1113:
1112:
1111:
1110:
1108:
1106:
1102:
1096:
1093:
1091:
1088:
1086:
1083:
1081:
1078:
1076:
1075:Asteroid belt
1073:
1071:
1070:Aten asteroid
1068:
1066:
1063:
1062:
1060:
1058:
1054:
1048:
1045:
1043:
1040:
1038:
1035:
1033:
1030:
1028:
1025:
1024:
1021:
1018:
1016:
1015:Minor planets
1012:
1008:
1001:
996:
994:
989:
987:
982:
981:
978:
966:
958:
957:
954:
951:
949:
946:
945:
942:
934:
931:
930:
929:
926:
924:
921:
919:
916:
915:
913:
909:
903:
900:
898:
895:
893:
890:
888:
887:Minor planets
885:
883:
880:
879:
877:
875:
871:
865:
862:
860:
857:
855:
852:
850:
847:
846:
844:
842:
838:
822:
819:
817:
814:
812:
809:
807:
804:
802:
799:
798:
797:
794:
789:
786:
783:
781:
778:
777:
776:
773:
772:
766:
763:
760:
757:
754:
752:
749:
747:
744:
742:
739:
737:
734:
732:
729:
727:
724:
723:
722:
719:
714:
711:
708:
705:
703:
700:
698:
695:
694:
693:
690:
689:
687:
685:
681:
673:
670:
668:
665:
663:
660:
658:
655:
653:
650:
648:
645:
643:
640:
639:
638:
637:small classes
635:
634:
629:
626:
624:
621:
619:
616:
615:
614:
611:
609:
606:
602:
599:
597:
594:
592:
589:
587:
584:
583:
582:
579:
578:
576:
574:
570:
567:
565:
561:
555:
554:
550:
548:
545:
543:
540:
539:
537:
535:
531:
528:
526:
522:
516:
513:
511:
508:
504:
501:
499:
496:
494:
491:
489:
486:
485:
484:
480:
476:
473:
471:
468:
467:
466:
465:Asteroid belt
463:
459:
458:Mars crossers
456:
455:
453:
449:
446:
444:
441:
439:
436:
434:
431:
429:
426:
425:
424:
421:
417:
414:
412:
409:
407:
404:
403:
401:
397:
394:
392:
389:
387:
384:
382:
379:
377:
376:Earth trojans
374:
372:
369:
368:
367:
364:
363:
361:
359:
355:
349:
346:
344:
341:
339:
338:Asteroid pair
336:
334:
331:
327:
324:
322:
319:
318:
317:
314:
312:
309:
307:
306:Earth-crosser
304:
302:
299:
297:
294:
292:
289:
285:
282:
281:
280:
277:
275:
272:
271:
269:
265:
261:
254:
249:
247:
242:
240:
235:
234:
231:
225:
222:
221:
217:
201:
197:
191:
188:
181:
179:
177:
173:
169:
161:
159:
156:
154:
153:980 Anacostia
150:
149:387 Aquitania
146:
142:
138:
133:
131:
127:
123:
113:
110:
102:
99:December 2012
91:
88:
84:
81:
77:
74:
70:
67:
63:
60: –
59:
55:
54:Find sources:
48:
44:
38:
37:
32:This article
30:
26:
21:
20:
1242:Space debris
953:Minor planet
918:Asteroid Day
864:Colonization
795:
745:
636:
551:
515:Exoasteroids
470:Kirkwood gap
381:Mars trojans
371:Venus trojan
358:Distribution
203:. Retrieved
190:
172:728 Leonisis
165:
157:
134:
121:
120:
105:
96:
86:
79:
72:
65:
53:
41:Please help
36:verification
33:
1232:Cosmic dust
1196:Long-period
1186:Halley-type
1142:Kuiper belt
1027:Designation
933:occultation
841:Exploration
796:small types
1257:Categories
1237:Meteoroids
1216:Sungrazing
1191:Hyperbolic
1147:Oort cloud
1090:Near-Earth
882:Near-Earth
423:Near-Earth
406:Vulcanoids
182:References
69:newspapers
1127:Damocloid
260:Asteroids
205:18 August
126:asteroids
1211:Periodic
1137:Detached
1057:Asteroid
965:Category
564:Spectral
510:Centaurs
296:Tracking
218:See also
1176:Extinct
1115:Centaur
911:Related
859:Capture
811:Ld-type
775:X-group
721:S-group
692:C-group
613:X-group
581:C-group
534:Orbital
366:Trojans
326:contact
139:in the
137:S-types
83:scholar
1168:Comets
1080:Family
1065:Active
1032:Groups
854:Mining
821:V-type
816:O-type
806:D-type
801:T-type
780:X-type
751:S-type
746:L-type
741:K-type
736:R-type
731:Q-type
726:A-type
702:C-type
697:B-type
672:V-type
667:R-type
662:Q-type
657:T-type
652:J-type
647:D-type
642:A-type
628:P-type
623:E-type
618:M-type
608:S-type
601:C-type
596:G-type
591:F-type
586:B-type
573:Tholen
553:(list)
547:Family
438:Apollo
333:Active
316:Binary
176:A-type
168:D-type
130:K-type
85:
78:
71:
64:
56:
1225:Other
1181:Great
948:Comet
874:Lists
684:SMASS
542:Group
443:Atira
90:JSTOR
76:books
1201:Lost
1042:Moon
1037:List
892:Lost
433:Amor
428:Aten
321:moon
267:Main
207:2016
151:and
62:news
712:Cgh
45:by
1259::
790:Xk
787:Xc
784:Xe
767:Sl
764:Sk
761:Sr
758:Sq
755:Sa
715:Cb
709:Ch
706:Cg
198:.
178:.
155:.
999:e
992:t
985:v
252:e
245:t
238:v
209:.
112:)
106:(
101:)
97:(
87:·
80:·
73:·
66:·
39:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
