1296:
1720:
1710:
1705:
1430:
1370:
1730:
1695:
711:
325:
1423:
1396:
1209:
1039:
Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015).
985:"Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry"
1363:
807:
121:
1715:
983:
Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David; et al. (September 2015).
834:
722:
in 2015, the first woman to lead a major research facility in
Germany. The approved naming citation was published by the
667:
1317:
1416:
1547:
1356:
922:
Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J.; et al. (November 2011).
569:
43:
1041:"Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results"
302:
1479:
414:
227:
1638:
552:
The first used observation was taken at the discovering observatory on 7 October 1977, extending the body's
1725:
1175:
1149:
487:
52:
1040:
984:
923:
864:
1464:
1098:
715:
17:
1379:
1628:
1618:
791:
1623:
1278:
1254:
1246:
1231:
760:
629:
63:
1459:
1270:
1262:
1237:
89:
863:
Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011).
1643:
1527:
1439:
1290:
719:
577:
399:
355:
332:
265:
256:
216:
203:
1325:
1700:
1564:
728:
686:
the family's largest member and namesake – and calculates a diameter of 6.9 kilometers with an
613:
1123:
1469:
645:
588:
was carried out. The trio are credited with the discovery of several thousand minor planets.
314:
185:
1309:
1301:
502:
in
California, United States. It was later named for Austrian astrophysicist and biochemist
1537:
1341:
1062:
1006:
945:
886:
605:
534:
238:
1285:
521:, an orbital group of more than 4,000 asteroids, which are well known for mostly being of
8:
723:
707:
703:
675:
538:
503:
499:
491:
291:
105:
68:
48:
1295:
1219:
1066:
1010:
949:
890:
1333:
1202:
1052:
996:
935:
876:
687:
581:
573:
565:
143:
1206:
1522:
1474:
1018:
957:
898:
865:"NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results"
803:
650:
530:
209:
173:
1648:
1070:
1014:
953:
894:
799:
795:
376:
165:
1569:
1512:
1497:
1213:
1074:
756:
633:
601:
553:
522:
405:
193:
1225:
1584:
1552:
1517:
628:
for this asteroid was obtained from photometric observations taken at the U.S.
542:
272:
249:
111:
1689:
1608:
1507:
1502:
924:"Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters"
714:
on a number of space missions. Ehrenfreund has been the lead investigator at
600:, the parent of the collisional Eos family, has been characterized as a rare
480:
1408:
1674:
1447:
699:
526:
486:
The asteroid was discovered on 16 October 1977, by Dutch astronomer couple
1348:
1664:
1613:
1574:
1390:
495:
280:
56:
1633:
1579:
625:
585:
518:
177:
157:
1669:
1559:
494:
at Leiden, on photographic plates taken by Dutch–American astronomer
149:
1489:
1057:
1001:
546:
476:
940:
881:
683:
663:
597:
702:
was named in honour of
Austrian astrophysicist and biochemist,
580:(also known as the 48-inch Schmidt Telescope), and shipped the
533:
once every 5 years and 2 months (1,892 days). Its orbit has an
1232:
1038:
757:"JPL Small-Body Database Browser: 9826 Ehrenfreund (2114 T-3)"
584:
to Ingrid and
Cornelis van Houten at Leiden Observatory where
1600:
572:, named after the fruitful collaboration of the Palomar and
556:
by just 9 days prior to its official discovery observation.
674:
measures 8.4 kilometers in diameter and its surface has an
368:
921:
1150:"First woman to head a major German research facility"
982:
862:
1168:
788:
Dictionary of Minor Planet Names – (9826) Ehrenfreund
1721:Discoveries by the Palomar–Leiden Trojan-3 survey
1093:
1091:
1687:
786:Schmadel, Lutz D. (2007). "(9826) Ehrenfreund".
1142:
978:
976:
974:
576:in the 1960s and 1970s. Gehrels used Palomar's
1116:
1088:
917:
915:
1438:
1424:
1364:
644:hours with a brightness variation of 0.37 in
971:
1711:Discoveries by Ingrid van Houten-Groeneveld
1706:Discoveries by Cornelis Johannes van Houten
1378:
912:
662:According to the survey carried out by the
591:
509:
1431:
1417:
1371:
1357:
1294:
781:
779:
777:
483:, approximately 7 kilometers in diameter.
1226:Asteroids and comets rotation curves, CdR
1056:
1032:
1000:
939:
880:
751:
749:
747:
745:
682:assumes an albedo of 0.14 – derived from
785:
529:main-belt at a distance of 2.7–3.3
1731:Astronomical objects discovered in 1977
1696:Minor planet object articles (numbered)
1228:– Observatoire de Genève, Raoul Behrend
774:
14:
1688:
858:
856:
854:
852:
829:
827:
825:
823:
821:
819:
742:
680:Collaborative Asteroid Lightcurve Link
657:
1412:
1352:
837:. Asteroid Lightcurve Database (LCDB)
559:
303:Longitude of ascending node
1203:Asteroid Lightcurve Database (LCDB)
849:
816:
668:Wide-field Infrared Survey Explorer
568:"T-3" stands for the last of three
24:
835:"LCDB Data for (9826) Ehrenfreund"
25:
1742:
1196:
1242:AstDyS-2, Asteroids—Dynamic Site
1220:Dictionary of Minor Planet Names
712:circumstellar organic molecules
800:10.1007/978-3-540-29925-7_7715
706:(born 1960), who has analyzed
619:
13:
1:
1154:DLR – German Aerospace Center
1099:"9826 Ehrenfreund (2114 T-3)"
736:
570:Palomar–Leiden Trojan surveys
479:from the outer region of the
1075:10.1016/j.icarus.2015.08.007
7:
718:and was elected CEO of the
716:NASA Astrobiology Institute
525:. It orbits the Sun in the
315:Argument of perihelion
10:
1747:
1716:Discoveries by Tom Gehrels
1124:"Minor Planet Discoverers"
1019:10.1088/0004-6256/150/3/75
958:10.1088/0004-637X/741/2/68
899:10.1088/0004-637X/741/2/90
792:Springer Berlin Heidelberg
632:in August 2013. It gave a
471:, provisional designation
144:Minor planet category
1657:
1599:
1536:
1488:
1455:
1446:
1440:Small Solar System bodies
1386:
928:The Astrophysical Journal
869:The Astrophysical Journal
761:Jet Propulsion Laboratory
693:
630:Palomar Transient Factory
462:
412:
397:
374:
353:
331:
324:
312:
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278:
263:
250:Orbital period (sidereal)
247:
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225:
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202:
192:
184:
172:
164:
141:
119:
99:
87:
82:
74:
62:
42:
37:
1212:16 December 2017 at the
989:The Astronomical Journal
759:(2017-06-05 last obs.).
612:may as well reveal such
592:Physical characteristics
510:Orbit and classification
415:Absolute magnitude
326:Physical characteristics
122:Alternative designations
1380:Minor planets navigator
1291:JPL Small-Body Database
720:German Aerospace Center
578:Samuel Oschin telescope
356:Synodic rotation period
166:Orbital characteristics
1565:Trans-Neptunian object
1255:Observation prediction
198:39.66 yr (14,486 days)
1234:– Minor Planet Center
1176:"MPC/MPO/MPS Archive"
726:on 11 November 2000 (
186:Uncertainty parameter
1538:Distant minor planet
606:SMASS classification
545:with respect to the
90:MPC designation
1726:Named minor planets
1342:Physical parameters
1180:Minor Planet Center
1128:Minor Planet Center
1103:Minor Planet Center
1067:2015Icar..261...34V
1011:2015AJ....150...75W
950:2011ApJ...741...68M
891:2011ApJ...741...90M
724:Minor Planet Center
704:Pascale Ehrenfreund
678:of 0.19, while the
658:Diameter and albedo
582:photographic plates
517:is a member of the
504:Pascale Ehrenfreund
500:Palomar Observatory
492:Cornelis van Houten
106:Pascale Ehrenfreund
75:Discovery date
64:Discovery site
34:
1279:Observational info
688:absolute magnitude
666:mission of NASA's
574:Leiden Observatory
566:survey designation
560:Survey designation
475:, is a stony Eoan
176:4 September 2017 (
95:(9826) Ehrenfreund
44:Discovered by
32:
1683:
1682:
1595:
1594:
1480:Meanings of names
1406:
1405:
809:978-3-540-00238-3
523:stony composition
466:
465:
286:0° 11 25.08 / day
16:(Redirected from
1738:
1453:
1452:
1433:
1426:
1419:
1410:
1409:
1397:9826 Ehrenfreund
1373:
1366:
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1334:Orbital elements
1298:
1286:9826 Ehrenfreund
1238:9826 Ehrenfreund
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469:9826 Ehrenfreund
453:
451:
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434:
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393:
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377:Geometric albedo
367:
365:
348:
346:
340:
137:
115:
49:C. J. van Houten
38:Discovery
35:
33:9826 Ehrenfreund
31:
21:
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1271:Proper elements
1214:Wayback Machine
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861:
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794:. p. 710.
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763:
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754:
743:
739:
727:
696:
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649:
639:
637:
634:rotation period
622:
602:K-type asteroid
594:
562:
554:observation arc
537:of 0.09 and an
512:
472:
449:
447:
442: 13.1
435:
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341:
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268:
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230:
228:Semi-major axis
194:Observation arc
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109:
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102:
92:
78:16 October 1977
55:
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28:
23:
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15:
12:
11:
5:
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1641:
1639:Near-parabolic
1636:
1631:
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1621:
1616:
1611:
1605:
1603:
1597:
1596:
1593:
1592:
1590:
1589:
1588:
1587:
1585:Scattered disc
1582:
1577:
1572:
1562:
1557:
1556:
1555:
1553:Neptune trojan
1550:
1542:
1540:
1534:
1533:
1531:
1530:
1528:Spectral types
1525:
1520:
1518:Jupiter trojan
1515:
1510:
1505:
1500:
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1485:
1483:
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1344:
1302:Close approach
1283:
1282:
1281:
1235:
1229:
1223:
1222:, Google books
1217:
1205:, query form (
1198:
1197:External links
1195:
1193:
1192:
1167:
1156:. 18 June 2015
1141:
1130:. 22 June 2016
1115:
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911:
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708:dust particles
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127:2114 T-3
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112:astrophysicist
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1701:Eos asteroids
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1508:Asteroid belt
1506:
1504:
1503:Aten asteroid
1501:
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1448:Minor planets
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53:I. van Houten
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1675:Space debris
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1391:9825 Oetken
1337:
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1305:
1289:
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1263:Orbital info
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1183:. Retrieved
1179:
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1158:. Retrieved
1153:
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1132:. Retrieved
1127:
1118:
1106:. Retrieved
1102:
1078:. Retrieved
1048:
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1022:. Retrieved
992:
988:
961:. Retrieved
931:
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902:. Retrieved
872:
868:
839:. Retrieved
787:
764:. Retrieved
700:minor planet
697:
684:221 Eos
679:
671:
661:
623:
609:
598:221 Eos
595:
563:
551:
535:eccentricity
514:
513:
485:
468:
467:
455:
443:
439:
424:
416:
339:(calculated)
266:Mean anomaly
259:(1,892 days)
239:Eccentricity
153:
128:
83:Designations
69:Palomar Obs.
29:
1665:Cosmic dust
1629:Long-period
1619:Halley-type
1575:Kuiper belt
1460:Designation
672:Ehrenfreund
620:Lightcurves
610:Ehrenfreund
539:inclination
515:Ehrenfreund
496:Tom Gehrels
292:Inclination
281:Mean motion
101:Named after
18:Ehrenfreund
1690:Categories
1670:Meteoroids
1649:Sungrazing
1624:Hyperbolic
1580:Oort cloud
1523:Near-Earth
1058:1506.00762
1002:1504.04041
963:4 December
737:References
690:of 13.55.
626:lightcurve
586:astrometry
519:Eos family
458: 13.55
423:12.8
333:Dimensions
217:Perihelion
180:2458000.5)
110:(Austrian
57:T. Gehrels
1560:Damocloid
1318:Ephemeris
1310:Discovery
1247:Ephemeris
1160:1 January
1051:: 34–47.
1024:1 January
995:(3): 35.
941:1109.4096
934:(2): 20.
882:1109.6407
875:(2): 25.
646:magnitude
384:(assumed)
233:2.9934 AU
221:2.7308 AU
150:main-belt
1644:Periodic
1570:Detached
1490:Asteroid
1210:Archived
547:ecliptic
477:asteroid
473:2114 T-3
337:6.94 km
204:Aphelion
27:Asteroid
1609:Extinct
1548:Centaur
1288:at the
1185:30 July
1134:30 July
1108:30 July
1080:30 July
1063:Bibcode
1007:Bibcode
946:Bibcode
904:30 July
887:Bibcode
841:30 July
766:22 June
664:NEOWISE
604:in the
498:at the
408:
320:112.60°
308:215.57°
296:8.9529°
208:3.2560
168:
160:
133:1993 VH
1601:Comets
1513:Family
1498:Active
1465:Groups
1338:·
1336:
1330:·
1328:
1322:·
1320:
1314:·
1312:
1306:·
1304:
1275:·
1273:
1267:·
1265:
1259:·
1257:
1251:·
1249:
1045:Icarus
806:
729:M.P.C.
694:Naming
676:albedo
642:0.0013
638:3.7484
596:Since
488:Ingrid
456:·
454:
444:·
440:·
438:
429:13.096
425:·
366:0.0013
362:3.7484
271:295.74
243:0.0877
154:·
152:
129:·
1658:Other
1614:Great
1340:
1332:
1324:
1316:
1308:
1277:
1269:
1261:
1253:
1053:arXiv
997:arXiv
936:arXiv
877:arXiv
731:41570
698:This
527:outer
448:13.38
446:
433:0.002
427:
392:0.024
388:0.191
382:0.14
347:0.267
343:8.378
255:5.18
174:Epoch
156:
131:
1634:Lost
1475:Moon
1470:List
1207:info
1187:2016
1162:2016
1136:2016
1110:2016
1082:2016
1026:2016
965:2016
906:2016
843:2016
804:ISBN
768:2017
710:and
564:The
541:of 9
490:and
452:0.26
1240:at
1071:doi
1049:261
1015:doi
993:150
954:doi
932:741
895:doi
873:741
796:doi
733:).
654:).
651:U=2
636:of
436:(R)
417:(H)
158:Eos
1692::
1178:.
1152:.
1126:.
1101:.
1090:^
1069:.
1061:.
1047:.
1043:.
1013:.
1005:.
991:.
987:.
973:^
952:.
944:.
930:.
926:.
914:^
893:.
885:.
871:.
867:.
851:^
818:^
802:.
790:.
776:^
744:^
670:,
616:.
608:,
549:.
531:AU
506:.
349:km
257:yr
210:AU
178:JD
1432:e
1425:t
1418:v
1372:e
1365:t
1358:v
1216:)
1189:.
1164:.
1138:.
1112:.
1084:.
1073::
1065::
1055::
1028:.
1017::
1009::
999::
967:.
956::
948::
938::
908:.
897::
889::
879::
845:.
812:.
798::
770:.
648:(
640:±
543:°
450:±
431:±
406:S
390:±
369:h
364:±
345:±
273:°
188:0
135:2
114:)
20:)
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