26:
609:
1013:
497:
Pilcher, Frederick (April 2012), "Rotation Period
Determinations for 31 Euphrosyne, 65 Cybele, 154 Bertha 177 Irma, 200 Dynamene, 724 Hapag, 880 Herba, and 1470 Carla",
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41:
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on
November 5, 1877. Paul was credited for this discovery. The meaning of the name Irma is unknown.
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with a period of 13.856 ± 0.001 hours and a brightness variation of 0.30 ± 0.03 in
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observations of this asteroid at the Organ Mesa
Observatory in
918:
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1019:This article about a C-type asteroid native to the
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501:, vol. 39, no. 2, pp. 57–60,
1084:Discoveries by Paul Henry and Prosper Henry
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422:. It was discovered by the French brothers
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1104:Astronomical objects discovered in 1877
1074:Minor planet object articles (numbered)
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526:(6th ed.), Springer, p. 29,
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665:
459:
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255:Longitude of ascending node
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463:
13:
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14:
1120:
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294:2.03001 AU (303.685 Gm)
283:1.11401 AU (166.654 Gm)
1011:
555:AstDyS-2, Asteroids—Dynamic Site
523:Dictionary of Minor Planet Names
1109:C-type main-belt-asteroid stubs
470:JPL Small-Body Database Browser
181:2.7685 AU (414.16 Gm)
169:2.1110 AU (315.80 Gm)
474:NASA Jet Propulsion Laboratory
1:
447:
1027:. You can help Knowledge by
424:Paul Henry and Prosper Henry
7:
415:is a fairly large and dark
267:Argument of perihelion
10:
1125:
1006:
520:Schmadel, Lutz D. (2012),
97:Minor planet category
1099:Ch-type asteroids (SMASS)
1094:C-type asteroids (Tholen)
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758:Small Solar System bodies
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499:The Minor Planet Bulletin
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198:Orbital period (sidereal)
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53:
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394:Absolute magnitude
313:Physical characteristics
81:Alternative designations
693:Minor planets navigator
604:JPL Small-Body Database
342:Synodic rotation period
110:Orbital characteristics
883:Trans-Neptunian object
568:Observation prediction
434:Las Cruces, New Mexico
129:Uncertainty parameter
1079:Background asteroids
856:Distant minor planet
464:Yeomans, Donald K.,
69:MPC designation
1089:Named minor planets
655:Physical parameters
507:2012MPBu...39...57P
141:115.30 yr (42113 d)
54:Discovery date
20:
592:Observational info
238:0° 12 50.256 / day
42:Discovered by
18:
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798:Meanings of names
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86:A877 VA; 1900 UB;
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647:Orbital elements
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362:Geometric albedo
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90:1937 UA, 1962 DB
88:1900 VA;1912 HE;
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584:Proper elements
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436:in 2011 gave a
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176:Semi-major axis
137:Observation arc
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57:5 November 1877
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30:Orbital diagram
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957:Near-parabolic
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903:Scattered disc
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871:Neptune trojan
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846:Spectral types
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836:Jupiter trojan
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615:Close approach
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545:External links
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119:31 July 2016 (
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1021:asteroid belt
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826:Asteroid belt
824:
822:
821:Aten asteroid
819:
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766:Minor planets
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639:Orbit diagram
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381:
380:Spectral type
376:
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363:
358:
354:
351:(0.5773
350:
346:
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288:Jupiter
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155:(512.52
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16:
1029:expanding it
1018:
1003:
993:Space debris
716:178 Belisana
708:
650:
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634:
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618:
602:
587:
579:
576:Orbital info
571:
563:
554:
522:
515:
498:
477:, retrieved
469:
428:
412:
411:
395:
347:13.856
218:Mean anomaly
187:Eccentricity
151:3.4260
62:Designations
15:
983:Cosmic dust
947:Long-period
937:Halley-type
893:Kuiper belt
778:Designation
438:light curve
430:Photometric
321:Mean radius
277:Earth
244:Inclination
233:Mean motion
47:P. P. Henry
1068:Categories
988:Meteoroids
967:Sungrazing
942:Hyperbolic
898:Oort cloud
841:Near-Earth
704:176 Iduna
533:3642297188
466:"177 Irma"
448:References
165:Perihelion
123:2457600.5)
74:(177) Irma
878:Damocloid
631:Ephemeris
623:Discovery
560:Ephemeris
442:magnitude
417:main belt
103:Main belt
36:Discovery
962:Periodic
888:Detached
808:Asteroid
710:177 Irma
599:177 Irma
551:177 Irma
420:asteroid
413:177 Irma
207:(1682.5
147:Aphelion
19:177 Irma
927:Extinct
866:Centaur
601:at the
503:Bibcode
302:Jupiter
272:38.184°
260:347.55°
248:1.3893°
191:0.23749
919:Comets
831:Family
816:Active
783:Groups
651:·
649:
643:·
641:
635:·
633:
627:·
625:
619:·
617:
588:·
586:
580:·
578:
572:·
570:
564:·
562:
530:
368:0.0527
223:42.096
49:, 1877
1023:is a
976:Other
932:Great
653:
645:
637:
629:
621:
590:
582:
574:
566:
479:6 May
372:0.002
327:36.61
307:3.296
203:4.61
117:Epoch
1025:stub
952:Lost
793:Moon
788:List
528:ISBN
481:2016
402:9.49
290:MOID
279:MOID
553:at
396:(H)
331:0.8
1070::
489:^
472:,
468:,
456:^
444:.
334:km
205:yr
157:Gm
153:AU
121:JD
1056:e
1049:t
1042:v
1031:.
750:e
743:t
736:v
685:e
678:t
671:v
536:.
509:.
505::
483:.
386:C
370:±
355:)
353:d
349:h
329:±
300:T
225:°
211:)
209:d
159:)
131:0
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