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Orbital node

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The image of the ascending and descending orbital nodes as the head and tail of a dragon, 180 degrees apart in the sky, goes back to the Chaldeans; it was used by the Zoroastrians, and then by Arabic astronomers and astrologers. In Middle Persian, its head and tail were respectively called
589:) is where it moves south through the plane. In the case of objects outside the Solar System, the ascending node is the node where the orbiting secondary passes away from the observer, and the descending node is the node where it moves towards the observer. 573:
If a reference direction from one side of the plane of reference to the other is defined, the two nodes can be distinguished. For geocentric and heliocentric orbits, the
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Livingston, John W. (1971). "Ibn Qayyim al-Jawziyyah: A Fourteenth Century Defense against Astrological Divination and Alchemical Transmutation".
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is the straight line resulting from the intersection of the object's orbital plane with the plane of reference; it passes through the two nodes.
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In medieval and early modern times, the ascending and descending nodes of the Moon in the ecliptic plane were called the "dragon's head" (
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Webster's third new international dictionary of the English language unabridged: with seven language dictionary
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were also used for the ascending and descending nodes, giving rise to the English terms
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The position of the node may be used as one of a set of parameters, called
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perpendicular to a line through the observer and the primary (called the
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Point where an orbit crosses a plane of reference to which it is inclined
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Animation about nodes of two elliptic trajectories. (Click on image.)
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Transactions of the American Philological Association (1869-1896)
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were used in the medieval West to denote either of the nodes.
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Cyclopædia, or, An universal dictionary of arts and sciences
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The Encyclopedia of Astrobiology, Astronomy, and Spaceflight
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The Encyclopedia of Astrobiology, Astronomy, and Spaceflight
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westward, completing a cycle in approximately 18.6 years.
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crossed the apparent path of the sun in the sky (as in a
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New thoughts on the genesis of the mysteries of Mithras
631:: U+260A, ☊), and the symbol of the descending node is 795: 789: 1008:Transactions of the American Philosophical Society 818:. Among the arguments against astrologers made by 1316: 980:, David Darling, on line, accessed May 17, 2007. 678:). Also, corruptions of the Arabic term such as 826:"Why is it that you have given an influence to 535:. In this case, non-inclined orbits are called 516:. In this case, non-inclined orbits are called 1259:. February 17, 2012. Vol. XI, Fasc. 2, p. 184 446: 915: 913: 911: 833: 827: 813: 807: 801: 616: 1283: 1277: 1180:, Chicago: Encyclopædia Britannica, 1986. 453: 439: 1004:"A Survey of Islamic Astronomical Tables" 967: 908: 1286:Journal of the American Oriental Society 1257:Encyclopædia Iranica (iranicaonline.org) 1216: 734: 564: 29: 1001: 812:— or in the case of the Moon, ___  14: 1317: 1098: 491: 488:in the reference plane, has no nodes. 874: 872: 469:is either of the two points where an 34:The ascending node is one of several 1137: 1059: 838:, which are two imaginary points ?" 621:The symbol of the ascending node is 919: 782: 657: 560: 24: 869: 25: 1346: 945: 225:Kepler's laws of planetary motion 632: 622: 55: 1245: 1210: 1191: 1170: 1131: 858:Longitude of the ascending node 600:longitude of the ascending node 1325:Technical factors of astrology 1092: 1053: 1034: 995: 983: 939: 724: 13: 1: 1207:, #1 (2001), pp. 59–76. 863: 7: 1099:Harper, Richard I. (1971). 841: 480:to which it is inclined. A 379:Tsiolkovsky rocket equation 10: 1351: 888:(6th ed.). New York: 728: 709: 703: 348:Engineering and efficiency 167:Bi-elliptic transfer orbit 890:Columbia University Press 542:For an orbit outside the 1272:Gochihr (Zoroastrianism) 1138:West, Andrew F. (1891). 617:Symbols and nomenclature 546:, the plane through the 374:Propellant mass fraction 273:Gravitational influences 1002:Kennedy, E. S. (1956). 796: 790: 662:) and "dragon's tail" ( 500:include the following: 245:Specific orbital energy 1060:Kren, Claudia (1977). 892:. 2004. Archived from 834: 828: 824:Miftah Dar al-SaCadah: 820:Ibn Qayyim al-Jawziyya 814: 808: 802: 740: 667: 649: 570: 162:Hohmann transfer orbit 39: 1227:University of Arizona 1176:anabibazon, entry in 885:Columbia Encyclopedia 771:upon the Moon causes 738: 604:longitude of the node 568: 358:Preflight engineering 90:Argument of periapsis 33: 822:(1292–1350), in his 809:al-dhanab al-jawzihr 602:(or, sometimes, the 414:Propulsive maneuvers 954:Celestial Mechanics 755:is taken to be the 498:planes of reference 492:Planes of reference 391:Efficiency measures 294:Sphere of influence 263:Celestial mechanics 45:Part of a series on 1233:on August 26, 2016 1046:2008-12-02 at the 803:al-ra's al-jawzihr 741: 571: 525:heliocentric orbit 482:non-inclined orbit 478:plane of reference 210:Dynamical friction 40: 797:gōzihr dumb 745:orbit of the Moon 739:Nodes of the Moon 463: 462: 313:Lagrangian points 250:Vis-viva equation 220:Kepler's equation 67:Orbital mechanics 16:(Redirected from 1342: 1335:Point (geometry) 1310: 1309: 1281: 1275: 1268: 1266: 1264: 1249: 1243: 1242: 1240: 1238: 1229:. Archived from 1214: 1208: 1195: 1189: 1174: 1168: 1167: 1135: 1129: 1128: 1096: 1090: 1089: 1057: 1051: 1038: 1032: 1031: 999: 993: 990:The Binary Stars 987: 981: 971: 965: 964: 962: 960: 947:Tatum, Jeremy B. 943: 937: 936: 934: 932: 920:Darling, David. 917: 906: 905: 903: 901: 896:on March 9, 2007 876: 837: 831: 817: 811: 805: 799: 793: 791:gōzihr sar 783:Use in astrology 761:equatorial plane 712: 711: 706: 705: 661: 636: 626: 595:orbital elements 561:Node distinction 553:plane of the sky 533:invariable plane 514:equatorial plane 506:geocentric orbit 455: 448: 441: 420:Orbital maneuver 369:Payload fraction 349: 330:Lissajous orbits 264: 235:Orbital velocity 182:Hyperbolic orbit 78:Orbital elements 68: 59: 42: 41: 36:orbital elements 21: 1350: 1349: 1345: 1344: 1343: 1341: 1340: 1339: 1315: 1314: 1313: 1282: 1278: 1269: 1262: 1260: 1251: 1250: 1246: 1236: 1234: 1215: 1211: 1196: 1192: 1175: 1171: 1156:10.2307/2935702 1136: 1132: 1097: 1093: 1058: 1054: 1048:Wayback Machine 1039: 1035: 1020:10.2307/1005726 1000: 996: 988: 984: 972: 968: 958: 956: 944: 940: 930: 928: 922:"line of nodes" 918: 909: 899: 897: 878: 877: 870: 866: 844: 785: 733: 727: 619: 583:descending node 563: 494: 459: 430: 429: 425:Orbit insertion 415: 407: 406: 392: 384: 383: 359: 351: 347: 340: 339: 335:Lyapunov orbits 326: 325: 309: 299: 298: 274: 266: 262: 255: 254: 240:Surface gravity 215:Escape velocity 205: 197: 196: 177:Parabolic orbit 173: 172: 139: 137: 134:two-body orbits 125: 124: 115:Semi-major axis 80: 70: 66: 28: 23: 22: 15: 12: 11: 5: 1348: 1338: 1337: 1332: 1327: 1312: 1311: 1298:10.2307/600445 1276: 1244: 1217:Marcia Rieke. 1209: 1200:, Roger Beck, 1190: 1169: 1130: 1117:10.1086/350708 1091: 1078:10.1086/351767 1072:(2): 194–205. 1052: 1033: 1014:(2): 123–177. 994: 982: 974:ascending node 966: 938: 907: 867: 865: 862: 861: 860: 855: 850: 843: 840: 784: 781: 729:Main article: 726: 723: 668:cauda draconis 650:caput draconis 641:: U+260B, ☋). 618: 615: 575:ascending node 562: 559: 558: 557: 540: 521: 493: 490: 461: 460: 458: 457: 450: 443: 435: 432: 431: 428: 427: 422: 416: 413: 412: 409: 408: 405: 404: 399: 397:Gravity assist 393: 390: 389: 386: 385: 382: 381: 376: 371: 366: 360: 357: 356: 353: 352: 345: 342: 341: 338: 337: 332: 324: 323: 315: 311: 310: 305: 304: 301: 300: 297: 296: 291: 286: 281: 275: 272: 271: 268: 267: 260: 257: 256: 253: 252: 247: 242: 237: 232: 230:Orbital period 227: 222: 217: 212: 206: 203: 202: 199: 198: 195: 194: 192:Decaying orbit 189: 184: 179: 171: 170: 164: 157: 155:Transfer orbit 153: 152: 151: 149:Elliptic orbit 146: 144:Circular orbit 140: 131: 130: 127: 126: 123: 122: 117: 112: 107: 102: 97: 92: 87: 81: 76: 75: 72: 71: 64: 61: 60: 52: 51: 47: 46: 26: 9: 6: 4: 3: 2: 1347: 1336: 1333: 1331: 1328: 1326: 1323: 1322: 1320: 1307: 1303: 1299: 1295: 1292:(1): 96–103. 1291: 1287: 1280: 1273: 1258: 1254: 1248: 1232: 1228: 1224: 1223:Astronomy 250 1220: 1213: 1206: 1203: 1199: 1194: 1187: 1186:0-85229-503-0 1183: 1179: 1173: 1165: 1161: 1157: 1153: 1149: 1145: 1141: 1134: 1126: 1122: 1118: 1114: 1110: 1106: 1102: 1095: 1087: 1083: 1079: 1075: 1071: 1067: 1063: 1056: 1049: 1045: 1042: 1037: 1029: 1025: 1021: 1017: 1013: 1009: 1005: 998: 991: 986: 979: 975: 970: 955: 951: 948: 942: 927: 923: 916: 914: 912: 895: 891: 887: 886: 881: 875: 873: 868: 859: 856: 854: 851: 849: 846: 845: 839: 836: 830: 825: 821: 816: 810: 804: 800:; in Arabic, 798: 792: 780: 778: 775:to gradually 774: 770: 766: 765:gravitational 762: 758: 754: 750: 746: 737: 732: 722: 720: 716: 700: 695: 693: 689: 685: 681: 677: 676:solar eclipse 673: 669: 665: 660: 655: 651: 647: 642: 640: 635: 630: 625: 614: 612: 611:line of nodes 607: 605: 601: 597: 596: 590: 588: 584: 580: 576: 567: 555: 554: 549: 545: 541: 538: 534: 530: 526: 522: 519: 515: 511: 507: 503: 502: 501: 499: 489: 487: 483: 479: 475: 472: 468: 456: 451: 449: 444: 442: 437: 436: 434: 433: 426: 423: 421: 418: 417: 411: 410: 403: 402:Oberth effect 400: 398: 395: 394: 388: 387: 380: 377: 375: 372: 370: 367: 365: 362: 361: 355: 354: 350: 344: 343: 336: 333: 331: 328: 327: 321: 317: 316: 314: 308: 307:N-body orbits 303: 302: 295: 292: 290: 289:Perturbations 287: 285: 282: 280: 277: 276: 270: 269: 265: 259: 258: 251: 248: 246: 243: 241: 238: 236: 233: 231: 228: 226: 223: 221: 218: 216: 213: 211: 208: 207: 201: 200: 193: 190: 188: 185: 183: 180: 178: 175: 174: 168: 165: 163: 159: 158: 156: 150: 147: 145: 142: 141: 135: 129: 128: 121: 118: 116: 113: 111: 110:Orbital nodes 108: 106: 103: 101: 98: 96: 93: 91: 88: 86: 83: 82: 79: 74: 73: 69: 63: 62: 58: 54: 53: 50:Astrodynamics 49: 48: 44: 43: 37: 32: 19: 18:Orbital nodes 1289: 1285: 1279: 1261:. 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Retrieved 894:the original 883: 853:Euler angles 823: 786: 767:pull of the 742: 718: 714: 696: 691: 687: 683: 679: 643: 620: 610: 608: 593: 591: 586: 582: 578: 574: 572: 551: 544:Solar System 536: 517: 495: 467:orbital node 466: 464: 187:Radial orbit 138:eccentricity 120:True anomaly 109: 105:Mean anomaly 95:Eccentricity 976:, entry in 725:Lunar nodes 719:catabibazon 710:καταβιβάζων 699:Koine Greek 659:رأس الجوزهر 484:, which is 320:Halo orbits 284:Hill sphere 100:Inclination 1319:Categories 1150:: 93–104. 864:References 759:, not the 731:Lunar node 715:anabibazon 704:αναβιβάζων 587:south node 579:north node 518:equatorial 474:intersects 364:Mass ratio 279:Barycenter 1263:March 28, 835:al-Dhanab 815:al-tennin 773:its nodes 486:contained 204:Equations 132:Types of 1253:"Gōzihr" 1044:Archived 842:See also 757:ecliptic 743:For the 692:zeuzahar 684:genzahar 537:ecliptic 529:ecliptic 1237:May 17, 1164:2935702 1028:1005726 959:May 17, 931:May 17, 900:May 17, 848:Eclipse 829:al-Ra's 777:precess 747:around 688:geuzaar 680:ganzaar 639:Unicode 629:Unicode 548:primary 496:Common 1330:Orbits 1306:600445 1304:  1184:  1162:  1125:229000 1123:  1086:230070 1084:  1026:  880:"node" 763:. The 751:, the 701:terms 654:Arabic 527:, the 523:For a 504:For a 1302:JSTOR 1202:Topoi 1160:JSTOR 1121:JSTOR 1082:JSTOR 1024:JSTOR 753:plane 749:Earth 664:Latin 646:Latin 510:Earth 471:orbit 85:Apsis 1270:Cf. 1265:2023 1239:2007 1182:ISBN 1105:Isis 1066:Isis 961:2007 933:2007 902:2007 832:and 806:and 794:and 717:and 707:and 697:The 690:and 672:Moon 609:The 585:(or 577:(or 1294:doi 1152:doi 1113:doi 1074:doi 1016:doi 769:Sun 606:.) 531:or 512:'s 465:An 136:by 1321:: 1300:. 1290:91 1288:. 1255:. 1225:. 1221:. 1205:11 1158:. 1148:22 1146:. 1142:. 1119:. 1109:62 1107:. 1103:. 1080:. 1070:68 1068:. 1064:. 1022:. 1012:46 1010:. 1006:. 952:. 924:. 910:^ 882:. 871:^ 721:. 686:, 682:, 666:: 656:: 652:, 648:: 556:). 508:, 476:a 1308:. 1296:: 1274:. 1267:. 1241:. 1188:. 1166:. 1154:: 1127:. 1115:: 1088:. 1076:: 1030:. 1018:: 963:. 935:. 904:. 637:( 627:( 539:. 520:. 454:e 447:t 440:v 322:) 318:( 169:) 160:( 38:. 20:)

Index

Orbital nodes

orbital elements

Orbital mechanics
Orbital elements
Apsis
Argument of periapsis
Eccentricity
Inclination
Mean anomaly
Orbital nodes
Semi-major axis
True anomaly
two-body orbits
Circular orbit
Elliptic orbit
Transfer orbit
Hohmann transfer orbit
Bi-elliptic transfer orbit
Parabolic orbit
Hyperbolic orbit
Radial orbit
Decaying orbit
Dynamical friction
Escape velocity
Kepler's equation
Kepler's laws of planetary motion
Orbital period
Orbital velocity

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