682:
after his daughter, Mizuho Urata. It was the first asteroid in over 50 years to be discovered by a non-professional astronomer, which set off a wave of interest in amateur asteroid discovery, especially in Japan. The official
947:
Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid
Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey".
895:
Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of
Spectrophotometrically Classified Asteroids: Preliminary Results".
1225:
1160:
1515:
1490:
684:
1075:
Seventy-five (75) Years of
Hirayama Asteroid Families: The Role of Collisions in the Solar System History. Astronomical Society of the Pacific Conference Series
329:
1218:
1500:
1153:
1124:
778:
1186:
95:
647:
1510:
1211:
1342:
1146:
29:
306:
1274:
975:
231:
1495:
1433:
1505:
1259:
805:
1423:
1413:
832:
Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J.; et al. (November 2011).
762:
1418:
733:
616:
41:
1254:
67:
1438:
1322:
1234:
436:
376:
336:
260:
220:
207:
1359:
1070:
996:
833:
693:
565:
464:
459:
1044:
1264:
1169:
625:
587:
442:
318:
189:
1332:
1082:
1008:
957:
914:
855:
538:
515:
242:
46:
688:
659:
542:
295:
904:
845:
614:
was obtained from photometric observations by James W. Brinsfield at the Via Capote
Observatory (
561:
473:
1317:
1269:
1120:
1016:
774:
643:
630:
534:
213:
177:
1443:
1112:
965:
922:
863:
766:
397:
169:
1364:
1307:
1292:
667:
621:
595:
575:
454:
446:
197:
1086:
1012:
961:
918:
859:
1379:
1347:
1312:
546:
276:
253:
1484:
1403:
1302:
1297:
926:
867:
511:
504:
34:
1469:
1242:
1180:
770:
679:
670:
of 0.057 and correspondingly calculates a much larger diameter of 35.3 kilometers.
530:
269:
159:
143:
729:
1459:
1408:
1369:
284:
997:"Asteroid Lightcurve Analysis at the Via Capote Observatory: 2010 February-May"
979:
1428:
1374:
1192:
1116:
607:
181:
1020:
969:
834:"Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters"
658:
measures between 18.0 and 18.9 kilometers in diameter and its surface has an
1464:
1354:
1203:
149:
1138:
1284:
550:
500:
1109:
Dictionary of Minor Planet Names – Addendum to Fifth
Edition (2006–2008)
651:
662:
of between 0.207 and 0.219, which is typical for stony asteroids. The
510:
The asteroid was discovered on 12 March 1978, by
Japanese astronomer
1395:
909:
850:
518:
in
Shimizu, Japan, who named it after his daughter, Mizuho Urata.
1071:"Activities of Asteroid Studies by Amateur Astronomers in Japan"
389:
1207:
1142:
537:
once every 5 years and 5 months (1,967 days). Its orbit has an
1107:
Schmadel, Lutz D. "Appendix – Publication Dates of the MPCs".
578:
by 27 years prior to its official discovery observation.
730:"JPL Small-Body Database Browser: 2090 Mizuho (1978 EA)"
666:, however assumes a standard albedo for a carbonaceous
642:
According to the surveys carried out by the
Japanese
1069:
Kosai, H.; Urata, T.; Nakamura, T. (December 1993).
1452:
1394:
1331:
1283:
1241:
471:
434:
395:
374:
335:
328:
316:
304:
294:
282:
267:
251:
241:
229:
219:
206:
196:
168:
141:
93:
77:
65:
60:
52:
40:
28:
23:
990:
988:
624:of 5.47 hours with a brightness variation of 0.30
950:Publications of the Astronomical Society of Japan
759:Dictionary of Minor Planet Names – (2090) Mizuho
827:
825:
823:
1219:
1154:
564:. The first used observation was obtained at
8:
1039:
1037:
18:
1111:. Springer Berlin Heidelberg. p. 221.
757:Schmadel, Lutz D. (2007). "(2090) Mizuho".
507:, approximately 18 kilometers in diameter.
1247:
1226:
1212:
1204:
1161:
1147:
1139:
752:
750:
908:
849:
724:
722:
720:
718:
716:
714:
712:
710:
533:main-belt at a distance of 2.7–3.5
1516:Astronomical objects discovered in 1978
1491:Minor planet object articles (numbered)
942:
940:
938:
936:
706:
890:
888:
886:
884:
800:
798:
796:
794:
792:
790:
664:Collaborative Asteroid Lightcurve Link
17:
995:Brinsfield, James W. (October 2010).
808:. Asteroid Lightcurve Database (LCDB)
556:The asteroid was first identified as
307:Longitude of ascending node
7:
648:Wide-field Infrared Survey Explorer
14:
606:In February 2010, a rotational
771:10.1007/978-3-540-29925-7_2091
1:
806:"LCDB Data for (2090) Mizuho"
594:is characterized as a common
503:from the outer region of the
1501:Discoveries by Takeshi Urata
620:) in California. It gave a
319:Argument of perihelion
1532:
927:10.1088/0004-637X/741/2/90
868:10.1088/0004-637X/741/2/68
763:Springer Berlin Heidelberg
678:The discoverer named this
495:, provisional designation
144:Minor planet category
1511:S-type asteroids (Tholen)
1250:
1235:Small Solar System bodies
1176:
1117:10.1007/978-3-642-01965-4
1001:The Minor Planet Bulletin
897:The Astrophysical Journal
838:The Astrophysical Journal
734:Jet Propulsion Laboratory
486:
254:Orbital period (sidereal)
188:
176:
732:(2017-05-02 last obs.).
582:Physical characteristics
522:Orbit and classification
474:Absolute magnitude
330:Physical characteristics
96:Alternative designations
87:(daughter of discoverer)
1170:Minor planets navigator
1045:"2090 Mizuho (1978 EA)"
568:in 1951, extending the
377:Synodic rotation period
170:Orbital characteristics
1360:Trans-Neptunian object
970:10.1093/pasj/63.5.1117
646:satellite, and NASA's
566:Heidelberg Observatory
529:orbits the Sun in the
202:66.14 yr (24,157 days)
691:on 1 September 1978 (
687:was published by the
588:Tholen classification
190:Uncertainty parameter
1496:Background asteroids
1333:Distant minor planet
650:with its subsequent
549:with respect to the
516:JCPM Yakiimo Station
68:MPC designation
1506:Named minor planets
1087:1994ASPC...63..297K
1049:Minor Planet Center
1013:2010MPBu...37..146B
980:AcuA catalog p. 153
962:2011PASJ...63.1117U
919:2011ApJ...741...90M
860:2011ApJ...741...68M
689:Minor Planet Center
638:Diameter and albedo
53:Discovery date
42:Discovery site
20:
562:Simeiz Observatory
180:4 September 2017 (
30:Discovered by
1478:
1477:
1390:
1389:
1275:Meanings of names
1201:
1200:
1126:978-3-642-01964-7
780:978-3-540-00238-3
490:
489:
1523:
1248:
1228:
1221:
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1205:
1163:
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1059:
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1055:
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1032:
1031:
1029:
1027:
992:
983:
973:
956:(5): 1117–1138.
944:
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879:
878:
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853:
829:
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633:
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398:Geometric albedo
388:
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370:
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355:
353:
347:
345:
290:0° 10 58.8 / day
163:
118:
89:
88:
24:Discovery
21:
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1526:
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1522:
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1520:
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1023:
994:
993:
986:
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893:
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831:
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821:
811:
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788:
781:
765:. p. 169.
756:
755:
748:
738:
736:
728:
727:
708:
704:
692:
685:naming citation
676:
668:C-type asteroid
640:
629:
622:rotation period
615:
604:
602:Rotation period
596:S-type asteroid
584:
576:observation arc
572:
557:
541:of 0.13 and an
524:
496:
479:
463:
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309:
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232:Semi-major axis
198:Observation arc
157:
146:
136:
130:
124:
117:
113:
112:
106:
98:
86:
85:
84:
80:
70:
12:
11:
5:
1529:
1527:
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1503:
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1472:
1467:
1462:
1456:
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1449:
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1446:
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1436:
1434:Near-parabolic
1431:
1426:
1421:
1416:
1411:
1406:
1400:
1398:
1392:
1391:
1388:
1387:
1385:
1384:
1383:
1382:
1380:Scattered disc
1377:
1372:
1367:
1357:
1352:
1351:
1350:
1348:Neptune trojan
1345:
1337:
1335:
1329:
1328:
1326:
1325:
1323:Spectral types
1320:
1315:
1313:Jupiter trojan
1310:
1305:
1300:
1295:
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1287:
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1267:
1262:
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1177:
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1173:
1168:
1166:
1165:
1158:
1151:
1143:
1133:
1132:
1125:
1099:
1061:
1033:
1007:(4): 146–147.
984:
932:
880:
819:
786:
779:
746:
705:
703:
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672:
639:
636:
603:
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583:
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520:
488:
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469:
468:
440:
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115:
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81:
78:
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62:
58:
57:
54:
50:
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44:
38:
37:
32:
26:
25:
13:
10:
9:
6:
4:
3:
2:
1528:
1517:
1514:
1512:
1509:
1507:
1504:
1502:
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1410:
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1334:
1330:
1324:
1321:
1319:
1316:
1314:
1311:
1309:
1306:
1304:
1303:Asteroid belt
1301:
1299:
1298:Aten asteroid
1296:
1294:
1291:
1290:
1288:
1286:
1282:
1276:
1273:
1271:
1268:
1266:
1263:
1261:
1258:
1256:
1253:
1252:
1249:
1246:
1244:
1243:Minor planets
1240:
1236:
1229:
1224:
1222:
1217:
1215:
1210:
1209:
1206:
1194:
1191:
1189:
1188:
1184:
1182:
1181:2089 Cetacea
1179:
1178:
1175:
1171:
1164:
1159:
1157:
1152:
1150:
1145:
1144:
1141:
1137:
1128:
1122:
1118:
1114:
1110:
1103:
1100:
1088:
1084:
1080:
1076:
1072:
1065:
1062:
1050:
1046:
1040:
1038:
1034:
1022:
1018:
1014:
1010:
1006:
1002:
998:
991:
989:
985:
981:
977:
971:
967:
963:
959:
955:
951:
943:
941:
939:
937:
933:
928:
924:
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916:
911:
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869:
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839:
835:
828:
826:
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768:
764:
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751:
747:
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731:
725:
723:
721:
719:
717:
715:
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707:
701:
699:
695:
690:
686:
681:
673:
671:
669:
665:
661:
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653:
649:
645:
637:
635:
632:
627:
623:
618:
613:
609:
601:
599:
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589:
581:
579:
577:
571:
567:
563:
554:
552:
548:
544:
540:
536:
532:
528:
521:
519:
517:
513:
512:Takeshi Urata
508:
506:
505:asteroid belt
502:
499:, is a stony
494:
485:
481:
478:
477:
470:
466:
461:
456:
452:
449:
448:
444:
441:
438:
437:Spectral type
433:
402:
399:
394:
391:
381:
378:
373:
340:
338:
334:
331:
327:
323:
320:
315:
311:
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303:
299:
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289:
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281:
278:
274:
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250:
246:
244:
240:
236:
233:
228:
224:
222:
218:
215:
211:
209:
205:
201:
199:
195:
191:
187:
183:
179:
175:
171:
167:
161:
155:
151:
148:
145:
140:
134:
131:1964 TE
128:
125:1953 TP
122:
110:
107:1942 PG
104:
101:1978 EA
100:
97:
92:
82:
76:
73:(2090) Mizuho
72:
69:
64:
59:
56:12 March 1978
55:
51:
48:
45:
43:
39:
36:
33:
31:
27:
22:
16:
1470:Space debris
1185:
1135:
1108:
1102:
1090:. Retrieved
1078:
1074:
1064:
1052:. Retrieved
1048:
1024:. Retrieved
1004:
1000:
953:
949:
900:
896:
871:. Retrieved
841:
837:
810:. Retrieved
758:
737:. Retrieved
680:minor planet
677:
663:
655:
641:
611:
605:
591:
585:
569:
555:
539:eccentricity
526:
525:
509:
492:
491:
475:
450:
369:(calculated)
270:Mean anomaly
263:(1,967 days)
243:Eccentricity
153:
135: 1970 WV
132:
129: 1959 VD
126:
123: 1953 RT
120:
111: 1951 EH
108:
105: 1937 RE
102:
83:Mizuho Urata
61:Designations
47:Yakiimo Stn.
15:
1460:Cosmic dust
1424:Long-period
1414:Halley-type
1370:Kuiper belt
1255:Designation
1187:2090 Mizuho
543:inclination
493:2090 Mizuho
296:Inclination
285:Mean motion
79:Named after
19:2090 Mizuho
1485:Categories
1465:Meteoroids
1444:Sungrazing
1419:Hyperbolic
1375:Oort cloud
1318:Near-Earth
1193:2091 Sampo
1092:7 December
1054:7 December
1026:7 December
873:7 December
812:7 December
702:References
608:lightcurve
337:Dimensions
221:Perihelion
184:2458000.5)
1355:Damocloid
1021:1052-8091
910:1109.6407
903:(2): 25.
851:1109.4096
844:(2): 20.
654:mission,
626:magnitude
405:(assumed)
367:35.28 km
237:3.0727 AU
225:2.6635 AU
150:main-belt
1439:Periodic
1365:Detached
1285:Asteroid
551:ecliptic
501:asteroid
208:Aphelion
35:T. Urata
1404:Extinct
1343:Centaur
1083:Bibcode
1081:: 297.
1009:Bibcode
958:Bibcode
915:Bibcode
856:Bibcode
739:10 June
652:NEOWISE
586:In the
558:1937 RE
514:at the
497:1978 EA
467:= 0.499
462:= 0.871
457:
324:341.20°
312:339.85°
300:11.814°
212:3.4819
172:
164:
137:1978 EJ
114:1952 HA
1396:Comets
1308:Family
1293:Active
1260:Groups
1123:
1019:
976:online
777:
694:M.P.C.
674:Naming
660:albedo
656:Mizuho
612:Mizuho
592:Mizuho
573:'s
570:Mizuho
527:Mizuho
451:·
443:Tholen
421:0.0435
417:0.2154
403:0.057
350:18.185
342:17.991
275:337.47
247:0.1332
154:·
152:
133:·
127:·
121:·
119:
109:·
103:·
1453:Other
1409:Great
905:arXiv
846:arXiv
644:Akari
545:of 12
531:outer
482:10.99
453:
429:0.029
425:0.219
413:0.019
409:0.207
359:18.92
354:0.117
346:0.141
259:5.39
178:Epoch
160:outer
156:
1429:Lost
1270:Moon
1265:List
1121:ISBN
1094:2016
1056:2016
1028:2016
1017:ISSN
875:2016
814:2016
775:ISBN
741:2017
696:4482
631:U=2+
610:for
387:0.01
383:5.47
363:0.79
1113:doi
966:doi
923:doi
901:741
864:doi
842:741
767:doi
698:).
634:).
617:G69
560:at
476:(H)
465:U–B
460:B–V
1487::
1119:.
1079:63
1077:.
1073:.
1047:.
1036:^
1015:.
1005:37
1003:.
999:.
987:^
978:,
964:.
954:63
952:.
935:^
921:.
913:.
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535:AU
445:=
365:km
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261:yr
214:AU
182:JD
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116:4
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