685:
1089:
398:). Initially only two observations of the asteroid were taken on 1916-09-06 which does not allow for an accurate orbital determination, however interest in the object prompted further investigation and more measurements were taken in late September and October. The asteroid was re-discovered in 1991 by
824:
759:
1174:
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1130:
294:
1179:
382:. The Mildred subgroup, and by extension 878 Mildred itself, is thought to have been formed by a recent fragmentation event from a larger asteroid.
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By comparing the asteroid's perceived brightness and the then computed distance from the Sun they arrived at an
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378:. It is the lowest numbered, and thus the namesake, of the Mildred family of asteroids, a subgroup of the
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394:, but was subsequently lost until it was again observed on single nights in 1985 and 1991 (a
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Cellino, A.; et al. (August 2001). "The
Puzzling Case of the Nysa–Polana Family".
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1002:
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878 Mildred was originally discovered in 1916 using the 1.5 m Hale
Telescope at the
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548:"The Orbit and Probable Size of a Very Faint Asteroid (878) Mildred"
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albedo gives an approximate diameter of 3 to 5 kilometers.
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447:"JPL Small-Body Database Browser: 878 Mildred (1916 f)"
1095:
This article about an S-type asteroid native to the
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Minor Planet Center
Database entry on (878) Mildred
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8:
18:
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760:
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476:Central Bureau for Astronomical Telegrams
441:
439:
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1175:Astronomical objects discovered in 1916
1150:Minor planet object articles (numbered)
431:
546:Shapley, H.; Nicholson, S. B. (1917).
17:
272:Longitude of ascending node
7:
1085:
1083:
688:
1103:. You can help Knowledge (XXG) by
14:
1087:
631:AstDyS-2, Asteroids—Dynamic Site
598:International Astronomical Union
1180:S-type main-belt-asteroid stubs
198:2.3619 AU (353.34 Gm)
186:1.8286 AU (273.55 Gm)
1185:Recovered astronomical objects
418:of 14.3, which if one assumes
1:
1165:Discoveries by Harlow Shapley
1160:Discoveries by Seth Nicholson
590:"MPC staff - Gareth Williams"
284:Argument of perihelion
1201:
1082:
478:(Report). IAU. 25 May 1991
109:Minor planet category
849:
834:Small Solar System bodies
775:
416:absolute visual magnitude
357:
215:Orbital period (sidereal)
144:
132:
404:Mildred Shapley Matthews
392:Mount Wilson Observatory
345:Absolute magnitude
295:Physical characteristics
84:Alternative designations
769:Minor planets navigator
680:JPL Small-Body Database
472:IAU Circular: IAUC 5275
313:Synodic rotation period
126:Orbital characteristics
959:Trans-Neptunian object
644:Observation prediction
528:10.1006/icar.2001.6634
449:(2015-04-10 last obs)
158:99.57 yr (36368 days)
146:Uncertainty parameter
932:Distant minor planet
553:Astronomical Journal
402:. It is named after
72:MPC designation
1170:Named minor planets
731:Physical parameters
594:Minor Planet Center
566:1917AJ.....30..127S
520:2001Icar..152..225C
410:Physical properties
57:Discovery date
46:Discovery site
20:
668:Observational info
400:Gareth V. Williams
255:0° 16 17.472 / day
30:Discovered by
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989:
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874:Meanings of names
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51:Mount Wilson Obs.
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723:Orbital elements
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560:(710): 127–128.
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60:6 September 1916
24:Discovery
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660:Proper elements
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193:Semi-major axis
154:Observation arc
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35:S. B. Nicholson
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1033:Near-parabolic
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979:Scattered disc
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947:Neptune trojan
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922:Spectral types
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912:Jupiter trojan
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691:Close approach
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616:External links
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136:31 July 2016 (
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1097:asteroid belt
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902:Asteroid belt
900:
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897:Aten asteroid
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842:Minor planets
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715:Orbit diagram
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396:lost asteroid
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374:orbiting the
373:
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333:Spectral type
329:
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322:(0.1108
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77:(878) Mildred
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1105:expanding it
1094:
1079:
1069:Space debris
784:
780:877 Walküre
726:
718:
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694:
678:
663:
655:
652:Orbital info
647:
639:
630:
601:. Retrieved
593:
584:
557:
551:
511:
505:
480:. Retrieved
475:
451:. Retrieved
413:
389:
368:minor planet
363:
362:
346:
235:Mean anomaly
204:Eccentricity
168:2.8953
65:Designations
15:
1059:Cosmic dust
1023:Long-period
1013:Halley-type
969:Kuiper belt
854:Designation
792:879 Ricarda
786:878 Mildred
675:878 Mildred
627:878 Mildred
482:20 February
380:Nysa family
364:878 Mildred
318:2.660
261:Inclination
250:Mean motion
19:878 Mildred
1144:Categories
1064:Meteoroids
1043:Sungrazing
1018:Hyperbolic
974:Oort cloud
917:Near-Earth
426:References
302:Dimensions
182:Perihelion
140:2457600.5)
39:H. Shapley
954:Damocloid
707:Ephemeris
699:Discovery
636:Ephemeris
603:26 August
420:Mars-like
386:Discovery
372:main belt
115:main-belt
1038:Periodic
964:Detached
884:Asteroid
224:(1325.9
164:Aphelion
89:1916 f,
1003:Extinct
942:Centaur
677:at the
562:Bibcode
516:Bibcode
370:in the
289:190.14°
277:172.83°
265:2.0648°
208:0.22580
128:
120:
98:1991 GZ
91:1985 VG
995:Comets
907:Family
892:Active
859:Groups
727:·
725:
719:·
717:
711:·
709:
703:·
701:
695:·
693:
664:·
662:
656:·
654:
648:·
646:
640:·
638:
507:Icarus
240:198.89
1099:is a
1052:Other
1008:Great
729:
721:
713:
705:
697:
666:
658:
650:
642:
453:3 May
366:is a
306:~4 km
220:3.63
134:Epoch
1101:stub
1028:Lost
869:Moon
864:List
605:2014
484:2020
455:2016
353:14.7
118:Nysa
629:at
570:doi
524:doi
512:152
376:Sun
347:(H)
1146::
596:.
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568:.
558:30
556:.
550:.
536:^
522:.
510:.
492:^
474:.
463:^
434:^
406:.
222:yr
174:Gm
170:AU
138:JD
96:,
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338:S
326:)
324:d
320:h
242:°
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226:d
176:)
148:0
100:8
93:6
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