1285:
1709:
1699:
1694:
1419:
1359:
1719:
1684:
700:
314:
1412:
1385:
1352:
796:
110:
1704:
656:
1405:
1536:
558:
1345:
1198:
32:
291:
1028:
Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015).
974:"Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry"
1468:
216:
1627:
972:
Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David; et al. (September 2015).
823:
711:
in 2015, the first woman to lead a major research facility in
Germany. The approved naming citation was published by the
1714:
1306:
476:
41:
1453:
704:
1617:
1607:
911:
Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J.; et al. (November 2011).
780:
1612:
1030:"Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results"
749:
618:
52:
1448:
78:
1632:
1516:
1428:
1279:
708:
566:
541:
The first used observation was taken at the discovering observatory on 7 October 1977, extending the body's
388:
344:
321:
245:
205:
192:
1164:
1138:
1689:
1553:
1029:
973:
912:
853:
717:
602:
1087:
1458:
1368:
634:
303:
174:
1526:
1267:
1243:
1235:
1220:
1051:
995:
934:
875:
594:
523:
227:
1259:
1251:
1226:
712:
696:
692:
664:
527:
492:
488:
480:
280:
94:
57:
37:
852:
Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011).
1041:
985:
924:
865:
676:
570:
562:
554:
403:
1314:
675:
the family's largest member and namesake – and calculates a diameter of 6.9 kilometers with an
1511:
1463:
1112:
792:
639:
519:
198:
162:
577:
was carried out. The trio are credited with the discovery of several thousand minor planets.
1637:
1298:
1290:
1059:
1003:
942:
883:
784:
491:
in
California, United States. It was later named for Austrian astrophysicist and biochemist
365:
154:
1330:
1558:
1501:
1486:
1274:
1202:
622:
590:
542:
511:
510:, an orbital group of more than 4,000 asteroids, which are well known for mostly being of
394:
182:
1284:
1208:
1055:
999:
938:
879:
1573:
1541:
1506:
1322:
1191:
531:
261:
238:
100:
1195:
1678:
1597:
1496:
1491:
1007:
946:
887:
854:"NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results"
469:
1663:
1436:
788:
688:
515:
254:
132:
1063:
745:
1653:
1602:
1563:
1379:
1214:
484:
269:
45:
617:
for this asteroid was obtained from photometric observations taken at the U.S.
1622:
1568:
614:
574:
507:
166:
146:
913:"Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters"
703:
on a number of space missions. Ehrenfreund has been the lead investigator at
589:, the parent of the collisional Eos family, has been characterized as a rare
1658:
1548:
1397:
138:
475:
The asteroid was discovered on 16 October 1977, by Dutch astronomer couple
1337:
1478:
535:
465:
672:
652:
586:
483:
at Leiden, on photographic plates taken by Dutch–American astronomer
1046:
990:
1589:
929:
870:
357:
1401:
1341:
691:
was named in honour of
Austrian astrophysicist and biochemist,
569:(also known as the 48-inch Schmidt Telescope), and shipped the
522:
once every 5 years and 2 months (1,892 days). Its orbit has an
1221:
746:"JPL Small-Body Database Browser: 9826 Ehrenfreund (2114 T-3)"
573:
to Ingrid and
Cornelis van Houten at Leiden Observatory where
561:, named after the fruitful collaboration of the Palomar and
545:
by just 9 days prior to its official discovery observation.
663:
measures 8.4 kilometers in diameter and its surface has an
1139:"First woman to head a major German research facility"
777:
Dictionary of Minor Planet Names – (9826) Ehrenfreund
1646:
1588:
1525:
1477:
1435:
401:
386:
363:
342:
320:
313:
301:
289:
279:
267:
252:
236:
226:
214:
204:
191:
181:
153:
130:
108:
88:
76:
71:
63:
51:
31:
26:
1710:Discoveries by the Palomar–Leiden Trojan-3 survey
1082:
1080:
775:Schmadel, Lutz D. (2007). "(9826) Ehrenfreund".
967:
965:
963:
565:in the 1960s and 1970s. Gehrels used Palomar's
906:
904:
1413:
1353:
633:hours with a brightness variation of 0.37 in
8:
21:
1700:Discoveries by Ingrid van Houten-Groeneveld
1695:Discoveries by Cornelis Johannes van Houten
651:According to the survey carried out by the
1441:
1420:
1406:
1398:
1360:
1346:
1338:
1283:
770:
768:
766:
472:, approximately 7 kilometers in diameter.
1215:Asteroids and comets rotation curves, CdR
1045:
989:
928:
869:
740:
738:
736:
734:
671:assumes an albedo of 0.14 – derived from
518:main-belt at a distance of 2.7–3.3
1720:Astronomical objects discovered in 1977
1685:Minor planet object articles (numbered)
1217:– Observatoire de Genève, Raoul Behrend
730:
847:
845:
843:
841:
818:
816:
814:
812:
810:
808:
669:Collaborative Asteroid Lightcurve Link
20:
826:. Asteroid Lightcurve Database (LCDB)
292:Longitude of ascending node
7:
1288:
1192:Asteroid Lightcurve Database (LCDB)
657:Wide-field Infrared Survey Explorer
557:"T-3" stands for the last of three
824:"LCDB Data for (9826) Ehrenfreund"
14:
1231:AstDyS-2, Asteroids—Dynamic Site
1209:Dictionary of Minor Planet Names
701:circumstellar organic molecules
789:10.1007/978-3-540-29925-7_7715
695:(born 1960), who has analyzed
1:
1143:DLR – German Aerospace Center
1088:"9826 Ehrenfreund (2114 T-3)"
559:Palomar–Leiden Trojan surveys
468:from the outer region of the
1064:10.1016/j.icarus.2015.08.007
707:and was elected CEO of the
705:NASA Astrobiology Institute
514:. It orbits the Sun in the
304:Argument of perihelion
1736:
1705:Discoveries by Tom Gehrels
1113:"Minor Planet Discoverers"
1008:10.1088/0004-6256/150/3/75
947:10.1088/0004-637X/741/2/68
888:10.1088/0004-637X/741/2/90
781:Springer Berlin Heidelberg
621:in August 2013. It gave a
460:, provisional designation
133:Minor planet category
1444:
1429:Small Solar System bodies
1375:
917:The Astrophysical Journal
858:The Astrophysical Journal
750:Jet Propulsion Laboratory
619:Palomar Transient Factory
451:
239:Orbital period (sidereal)
173:
161:
1201:16 December 2017 at the
978:The Astronomical Journal
748:(2017-06-05 last obs.).
601:may as well reveal such
581:Physical characteristics
499:Orbit and classification
404:Absolute magnitude
315:Physical characteristics
111:Alternative designations
1369:Minor planets navigator
1280:JPL Small-Body Database
709:German Aerospace Center
567:Samuel Oschin telescope
345:Synodic rotation period
155:Orbital characteristics
1554:Trans-Neptunian object
1244:Observation prediction
187:39.66 yr (14,486 days)
1223:– Minor Planet Center
1165:"MPC/MPO/MPS Archive"
715:on 11 November 2000 (
175:Uncertainty parameter
1527:Distant minor planet
595:SMASS classification
534:with respect to the
79:MPC designation
1715:Named minor planets
1331:Physical parameters
1169:Minor Planet Center
1117:Minor Planet Center
1092:Minor Planet Center
1056:2015Icar..261...34V
1000:2015AJ....150...75W
939:2011ApJ...741...68M
880:2011ApJ...741...90M
713:Minor Planet Center
693:Pascale Ehrenfreund
667:of 0.19, while the
647:Diameter and albedo
571:photographic plates
506:is a member of the
493:Pascale Ehrenfreund
489:Palomar Observatory
481:Cornelis van Houten
95:Pascale Ehrenfreund
64:Discovery date
53:Discovery site
23:
1268:Observational info
677:absolute magnitude
655:mission of NASA's
563:Leiden Observatory
555:survey designation
549:Survey designation
464:, is a stony Eoan
165:4 September 2017 (
84:(9826) Ehrenfreund
33:Discovered by
1672:
1671:
1584:
1583:
1469:Meanings of names
1395:
1394:
798:978-3-540-00238-3
512:stony composition
455:
454:
275:0° 11 25.08 / day
1727:
1442:
1422:
1415:
1408:
1399:
1386:9826 Ehrenfreund
1362:
1355:
1348:
1339:
1323:Orbital elements
1287:
1275:9826 Ehrenfreund
1227:9826 Ehrenfreund
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1177:
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802:
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761:
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756:
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463:
458:9826 Ehrenfreund
442:
440:
426:
423:
421:
382:
380:
374:
366:Geometric albedo
356:
354:
337:
335:
329:
126:
104:
38:C. J. van Houten
27:Discovery
24:
22:9826 Ehrenfreund
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1260:Proper elements
1203:Wayback Machine
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783:. p. 710.
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773:
764:
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752:
744:
743:
732:
728:
716:
685:
649:
638:
628:
626:
623:rotation period
611:
591:K-type asteroid
583:
551:
543:observation arc
526:of 0.09 and an
501:
461:
438:
436:
431: 13.1
424:
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217:Semi-major axis
183:Observation arc
135:
125:
121:
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98:
97:
91:
81:
67:16 October 1977
44:
40:
17:
12:
11:
5:
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1630:
1628:Near-parabolic
1625:
1620:
1615:
1610:
1605:
1600:
1594:
1592:
1586:
1585:
1582:
1581:
1579:
1578:
1577:
1576:
1574:Scattered disc
1571:
1566:
1561:
1551:
1546:
1545:
1544:
1542:Neptune trojan
1539:
1531:
1529:
1523:
1522:
1520:
1519:
1517:Spectral types
1514:
1509:
1507:Jupiter trojan
1504:
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1483:
1481:
1475:
1474:
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1291:Close approach
1272:
1271:
1270:
1224:
1218:
1212:
1211:, Google books
1206:
1194:, query form (
1187:
1186:External links
1184:
1182:
1181:
1156:
1145:. 18 June 2015
1130:
1119:. 22 June 2016
1104:
1076:
1020:
959:
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837:
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729:
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724:
697:dust particles
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116:2114 T-3
114:
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101:astrophysicist
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1690:Eos asteroids
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1497:Asteroid belt
1495:
1493:
1492:Aten asteroid
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1437:Minor planets
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42:I. van Houten
39:
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30:
25:
19:
1664:Space debris
1384:
1380:9825 Oetken
1326:
1318:
1310:
1302:
1294:
1278:
1263:
1255:
1252:Orbital info
1247:
1239:
1230:
1172:. Retrieved
1168:
1159:
1147:. Retrieved
1142:
1133:
1121:. Retrieved
1116:
1107:
1095:. Retrieved
1091:
1067:. Retrieved
1037:
1033:
1023:
1011:. Retrieved
981:
977:
950:. Retrieved
920:
916:
891:. Retrieved
861:
857:
828:. Retrieved
776:
753:. Retrieved
689:minor planet
686:
673:221 Eos
668:
660:
650:
612:
598:
587:221 Eos
584:
552:
540:
524:eccentricity
503:
502:
474:
457:
456:
444:
432:
428:
413:
405:
328:(calculated)
255:Mean anomaly
248:(1,892 days)
228:Eccentricity
142:
117:
72:Designations
58:Palomar Obs.
18:
1654:Cosmic dust
1618:Long-period
1608:Halley-type
1564:Kuiper belt
1449:Designation
661:Ehrenfreund
609:Lightcurves
599:Ehrenfreund
528:inclination
504:Ehrenfreund
485:Tom Gehrels
281:Inclination
270:Mean motion
90:Named after
1679:Categories
1659:Meteoroids
1638:Sungrazing
1613:Hyperbolic
1569:Oort cloud
1512:Near-Earth
1047:1506.00762
991:1504.04041
952:4 December
726:References
679:of 13.55.
615:lightcurve
575:astrometry
508:Eos family
447: 13.55
412:12.8
322:Dimensions
206:Perihelion
169:2458000.5)
99:(Austrian
46:T. Gehrels
1549:Damocloid
1307:Ephemeris
1299:Discovery
1236:Ephemeris
1149:1 January
1040:: 34–47.
1013:1 January
984:(3): 35.
930:1109.4096
923:(2): 20.
871:1109.6407
864:(2): 25.
635:magnitude
373:(assumed)
222:2.9934 AU
210:2.7308 AU
139:main-belt
1633:Periodic
1559:Detached
1479:Asteroid
1199:Archived
536:ecliptic
466:asteroid
462:2114 T-3
326:6.94 km
193:Aphelion
16:Asteroid
1598:Extinct
1537:Centaur
1277:at the
1174:30 July
1123:30 July
1097:30 July
1069:30 July
1052:Bibcode
996:Bibcode
935:Bibcode
893:30 July
876:Bibcode
830:30 July
755:22 June
653:NEOWISE
593:in the
487:at the
397:
309:112.60°
297:215.57°
285:8.9529°
197:3.2560
157:
149:
122:1993 VH
1590:Comets
1502:Family
1487:Active
1454:Groups
1327:·
1325:
1319:·
1317:
1311:·
1309:
1303:·
1301:
1295:·
1293:
1264:·
1262:
1256:·
1254:
1248:·
1246:
1240:·
1238:
1034:Icarus
795:
718:M.P.C.
683:Naming
665:albedo
631:0.0013
627:3.7484
585:Since
477:Ingrid
445:·
443:
433:·
429:·
427:
418:13.096
414:·
355:0.0013
351:3.7484
260:295.74
232:0.0877
143:·
141:
118:·
1647:Other
1603:Great
1329:
1321:
1313:
1305:
1297:
1266:
1258:
1250:
1242:
1042:arXiv
986:arXiv
925:arXiv
866:arXiv
720:41570
687:This
516:outer
437:13.38
435:
422:0.002
416:
381:0.024
377:0.191
371:0.14
336:0.267
332:8.378
244:5.18
163:Epoch
145:
120:
1623:Lost
1464:Moon
1459:List
1196:info
1176:2016
1151:2016
1125:2016
1099:2016
1071:2016
1015:2016
954:2016
895:2016
832:2016
793:ISBN
757:2017
699:and
553:The
530:of 9
479:and
441:0.26
1229:at
1060:doi
1038:261
1004:doi
982:150
943:doi
921:741
884:doi
862:741
785:doi
722:).
643:).
640:U=2
625:of
425:(R)
406:(H)
147:Eos
1681::
1167:.
1141:.
1115:.
1090:.
1079:^
1058:.
1050:.
1036:.
1032:.
1002:.
994:.
980:.
976:.
962:^
941:.
933:.
919:.
915:.
903:^
882:.
874:.
860:.
856:.
840:^
807:^
791:.
779:.
765:^
733:^
659:,
605:.
597:,
538:.
520:AU
495:.
338:km
246:yr
199:AU
167:JD
1421:e
1414:t
1407:v
1361:e
1354:t
1347:v
1205:)
1178:.
1153:.
1127:.
1101:.
1073:.
1062::
1054::
1044::
1017:.
1006::
998::
988::
956:.
945::
937::
927::
897:.
886::
878::
868::
834:.
801:.
787::
759:.
637:(
629:±
532:°
439:±
420:±
395:S
379:±
358:h
353:±
334:±
262:°
177:0
124:2
103:)
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