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Lunar limb

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1453: 20: 1475: 318: 1429: 74:, a three-dimensional model including mountains and valleys can be created and the lunar profile for any given time predicted with a high degree of accuracy. The irregularity of the lunar limb is the cause of 1376: 59:. Seen from afar, it looks like a circular arc, but with higher resolution, it can be seen that the Moon’s surface is not flat and therefore its profile is irregular. 1334: 1369: 43:
is visible, the borderline between the Moon's day and night; the lunar limb is the Moon's profile against the dark sky, top right in this picture.
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of the Moon, i.e. small rotational movements as seen from Earth, its profile changes; this complicates the task of precisely calculating
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times and durations. However, with elevation data from the mapping of the
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that shine through in some places while not in others during a
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Edge of the visible surface of the Moon as viewed from Earth
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Watts, C. B. (1963). "The Marginal Zone of the Moon".
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The lunar limb is not always the same: because of the
101:makes the lunar limb a popular target when testing 51:is the edge of the visible surface (disc) of the 1527: 1510: 205: 1517: 1503: 212: 198: 97:of the bright lunar disc against a black 174:(1). U.S. Nautical Almanac Office: 951. 18: 146: 1528: 193: 165: 1469: 13: 14: 1552: 1430:Lilith (hypothetical second moon) 1473: 1452: 1451: 1393:Moon landing conspiracy theories 316: 815:Selenographic coordinate system 1342:Artificial objects on the Moon 159: 140: 130:"List of basic lunar features" 122: 1: 433:Total penumbral lunar eclipse 115: 1489:. You can help Knowledge by 1481:This article related to the 1408:Moon is made of green cheese 702:Permanently shadowed craters 7: 10: 1557: 1468: 1335:Craters named after people 808:Transient lunar phenomenon 456:Solar eclipses on the Moon 1446: 1275: 1243: 1148: 1065: 985: 824: 527: 325: 314: 236: 227: 219: 149:"Lunar Limb Corrections" 1356:Moon in science fiction 861:Giant-impact hypothesis 709:South Pole–Aitken basin 39:. Across the Moon, the 1377:futuristic exploration 900:Late Heavy Bombardment 44: 1437:Splitting of the Moon 1349:Memorials on the Moon 953:Lunar sample displays 635:Peak of eternal light 27:of the lunar disc at 22: 937:Lunar laser ranging 180:1963USNAO..17....1W 168:Astronomical Papers 1086:Lunisolar calendar 755:Lunar basalt 70017 502:Tidal acceleration 357:Perigee and apogee 247:Internal structure 45: 1498: 1497: 1466: 1465: 1416:Natural satellite 875:Lunar magma ocean 651:Volcanic features 1548: 1519: 1512: 1505: 1477: 1470: 1459: 1455: 1454: 1439: 1432: 1425: 1418: 1411: 1402: 1395: 1386: 1379: 1372: 1365: 1358: 1351: 1344: 1337: 1328: 1321: 1314: 1307: 1300: 1293: 1286: 1268: 1261: 1259:Meridian passage 1254: 1236: 1229: 1222: 1215: 1208: 1201: 1194: 1187: 1178: 1171: 1164: 1141: 1134: 1127: 1120: 1109: 1102: 1095: 1088: 1081: 1058: 1051: 1042: 1035: 1028: 1021: 1012: 1005: 998: 978: 976:Lunar seismology 969: 962: 955: 946: 939: 932: 925: 918: 911: 909:Lunar meteorites 902: 895: 888: 877: 870: 863: 856: 849: 842: 835: 817: 810: 803: 794: 787: 780: 778:Space weathering 773: 764: 757: 750: 743: 736: 727: 720: 711: 704: 697: 690: 683: 674: 667: 660: 653: 646: 637: 630: 621: 614: 603: 596: 589: 582: 575: 568: 561: 556: 549: 542: 520: 511: 504: 497: 490: 483: 474: 465: 458: 451: 442: 435: 428: 421: 414: 407: 400: 391: 382: 375: 368: 359: 352: 345: 343:Orbital elements 338: 320: 307: 300: 293: 286: 277: 270: 263: 256: 249: 214: 207: 200: 191: 190: 184: 183: 163: 157: 156: 151:. Archived from 147:O'Byrne, Chris. 144: 138: 137: 132:. Archived from 126: 41:lunar terminator 23:Two contrasting 1556: 1555: 1551: 1550: 1549: 1547: 1546: 1545: 1526: 1525: 1524: 1523: 1467: 1462: 1450: 1442: 1435: 1428: 1421: 1414: 1405: 1398: 1391: 1382: 1375: 1368: 1361: 1354: 1347: 1340: 1333: 1324: 1319:Man in the Moon 1317: 1310: 1303: 1296: 1289: 1282: 1271: 1264: 1257: 1250: 1244:Daily phenomena 1239: 1232: 1225: 1218: 1211: 1204: 1197: 1192:Super and micro 1190: 1183: 1174: 1167: 1160: 1153: 1144: 1137: 1130: 1123: 1116: 1105: 1098: 1091: 1084: 1077: 1067: 1061: 1056:Lunar resources 1054: 1047: 1038: 1031: 1024: 1017: 1008: 1001: 994: 981: 974: 965: 958: 951: 942: 935: 930: 921: 914: 907: 898: 891: 884: 873: 866: 859: 852: 845: 838: 831: 820: 813: 806: 799: 790: 783: 776: 769: 760: 753: 746: 739: 732: 723: 716: 707: 700: 693: 686: 679: 670: 663: 656: 649: 642: 633: 626: 617: 610: 599: 592: 585: 580: 571: 564: 559: 552: 545: 538: 529: 523: 516: 507: 500: 493: 486: 479: 470: 461: 454: 447: 438: 431: 424: 417: 410: 403: 396: 387: 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850: 843: 836: 828: 826: 822: 821: 819: 818: 811: 804: 797: 796: 795: 788: 785:Micrometeorite 774: 767: 766: 765: 762:Changesite-(Y) 758: 744: 741:Wrinkle ridges 737: 730: 729: 728: 714: 713: 712: 705: 698: 691: 677: 676: 675: 668: 661: 647: 640: 639: 638: 624: 623: 622: 608: 607: 606: 605: 604: 590: 578: 577: 576: 569: 557: 550: 543: 535: 533: 525: 524: 522: 521: 514: 513: 512: 505: 498: 491: 477: 476: 475: 468: 467: 466: 459: 452: 445: 444: 443: 436: 415: 408: 394: 393: 392: 385: 384: 383: 369: 362: 361: 360: 339: 336:Lunar distance 331: 329: 323: 322: 315: 313: 311: 310: 309: 308: 294: 287: 284:Magnetic field 280: 279: 278: 264: 257: 250: 242: 240: 234: 233: 228: 225: 224: 217: 216: 209: 202: 194: 186: 185: 158: 155:on 2008-01-13. 139: 136:on 2006-02-03. 120: 119: 117: 114: 15: 9: 6: 4: 3: 2: 1553: 1542: 1539: 1537: 1536:Lunar science 1534: 1533: 1531: 1520: 1515: 1513: 1508: 1506: 1501: 1500: 1494: 1492: 1488: 1484: 1479: 1476: 1472: 1471: 1458: 1449: 1448: 1445: 1438: 1434: 1431: 1427: 1424: 1423:Double planet 1420: 1417: 1413: 1409: 1404: 1401: 1397: 1394: 1390: 1385: 1381: 1378: 1374: 1371: 1367: 1364: 1360: 1359: 1357: 1353: 1350: 1346: 1343: 1339: 1336: 1332: 1327: 1323: 1320: 1316: 1315: 1313: 1309: 1306: 1305:Moon illusion 1302: 1299: 1295: 1292: 1288: 1285: 1284:Lunar deities 1281: 1280: 1278: 1274: 1267: 1263: 1260: 1256: 1253: 1249: 1248: 1246: 1242: 1235: 1231: 1228: 1224: 1221: 1217: 1214: 1210: 1207: 1203: 1200: 1196: 1193: 1189: 1186: 1182: 1177: 1173: 1172: 1170: 1166: 1163: 1159: 1158: 1156: 1151: 1147: 1140: 1136: 1133: 1132:Lunar station 1129: 1126: 1122: 1119: 1115: 1108: 1104: 1103: 1101: 1097: 1096: 1094: 1090: 1087: 1083: 1080: 1076: 1075: 1073: 1071: 1066:Time-telling 1064: 1057: 1053: 1050: 1046: 1041: 1037: 1036: 1034: 1030: 1027: 1023: 1020: 1016: 1011: 1007: 1004: 1000: 999: 997: 993: 992: 990: 988: 984: 977: 973: 968: 964: 961: 957: 956: 954: 950: 945: 941: 938: 934: 933: 929: 924: 920: 917: 913: 910: 906: 901: 897: 896: 894: 890: 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272: 271: 269: 268:Gravity field 265: 262: 258: 255: 251: 248: 244: 243: 241: 235: 231: 226: 222: 215: 210: 208: 203: 201: 196: 195: 192: 181: 177: 173: 169: 162: 154: 150: 143: 135: 131: 125: 121: 113: 111: 107: 104: 100: 96: 91: 89: 88:solar eclipse 85: 81: 77: 76:Baily's beads 73: 72:lunar surface 69: 65: 60: 58: 54: 50: 42: 38: 34: 30: 26: 21: 1491:expanding it 1480: 1291:Lunar effect 1107:Nodal period 1033:Colonization 847:Lunar theory 553: 540:Selenography 380:Nodal period 171: 167: 161: 153:the original 142: 134:the original 124: 92: 78:, which are 61: 48: 46: 1400:Moon Treaty 1384:Hollow Moon 1326:Moon rabbit 1298:Earth phase 1100:Lunar month 987:Exploration 931:Experiments 833:Observation 695:Ray systems 560:Hemispheres 528:Surface and 509:Tidal range 488:Tidal force 291:Sodium tail 275:Hill sphere 108:(including 33:overexposed 25:lightnesses 1541:Moon stubs 1530:Categories 1370:Apollo era 1312:Pareidolia 1070:navigation 792:Sputtering 672:Lava tubes 594:South pole 587:North pole 547:Terminator 389:Precession 305:Earthshine 261:Atmosphere 254:Topography 239:properties 116:References 110:binoculars 80:collimated 49:lunar limb 37:earthshine 1118:Fortnight 1010:Explorers 967:Apollo 17 960:Apollo 11 923:Volcanism 893:Timescale 840:Libration 628:Mountains 566:Near side 472:Supermoon 412:Full moon 366:Libration 298:Moonlight 103:telescope 99:night sky 64:libration 1457:Category 1252:Moonrise 1185:Crescent 1125:Sennight 1040:Moonbase 996:Missions 665:Calderas 573:Far side 531:features 419:Eclipses 405:New moon 350:Distance 237:Physical 95:contrast 84:sunlight 82:rays of 35:to show 29:crescent 1276:Related 1266:Moonset 1049:Tourism 1026:Landing 886:Geology 825:Science 681:Craters 644:Valleys 230:Outline 176:Bibcode 68:eclipse 31:phase, 1234:Tetrad 1150:Phases 1019:Probes 854:Origin 801:Quakes 734:Rilles 725:swirls 440:Tetrad 398:Syzygy 106:optics 1485:is a 1213:Black 1199:Blood 1176:Names 1154:names 1093:Month 944:ALSEP 916:KREEP 868:Theia 771:Water 748:Rocks 658:Domes 612:Maria 581:Poles 373:Nodes 327:Orbit 57:Earth 1487:stub 1483:Moon 1363:list 1220:Dark 1206:Blue 1169:Full 1068:and 718:Soil 688:List 619:List 601:Face 554:Limb 481:Tide 221:Moon 93:The 53:Moon 47:The 1227:Wet 1162:New 1152:and 112:). 1532:: 172:17 170:. 90:. 1518:e 1511:t 1504:v 1493:. 1410:" 1406:" 213:e 206:t 199:v 182:. 178::

Index


lightnesses
crescent
overexposed
earthshine
lunar terminator
Moon
Earth
libration
eclipse
lunar surface
Baily's beads
collimated
sunlight
solar eclipse
contrast
night sky
telescope
optics
binoculars
"List of basic lunar features"
the original
"Lunar Limb Corrections"
the original
Bibcode
1963USNAO..17....1W
v
t
e
Moon

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