Physical characteristics (53319) 1999 JM8

-


radar images , computer models of (53319) 1999 jm8


in smass , tholen classification, 1999 jm8 x-type asteroid. has been characterized carbonaceous c-type asteroid, seems more due exceptionally low albedo (see below).


rotation period

radar imaging goldstone , arecibo observatories revealed 1999 jm8 has unusually slow , possibly chaotic rotation period, similar of asteroid 4179 toutatis.


in july 1999, rotational lightcurve of 1999 jm8 obtained photometric observations. gave period of 7002136000000000000♠136±2 hours brightness amplitude of 0.7 magnitude (u=2), , suggest body in non-principal axis rotation, commonly known tumbling.


diameter , albedo

1999 jm8 measures between 5 , 7 kilometers in diameter , surface has exceptionally low albedo of 0.02.


the collaborative asteroid lightcurve link derives albedo of 0.03 , adopts diameter of 7 kilometers based on absolute magnitude of 15.2.








Comments

Post a Comment

Popular posts from this blog

Ice Age List of Ice Age characters

-
1 ice age 1.1 roshan 1.2 soto 1.2.1 zeke 1.2.2 oscar 1.2.3 lenny 1.3 runar 1.4 nadia 1.5 dodo birds 1.5.1 dab 1.6 carl , frank 1.7 jennifer , rachel 1.8 sylvia ice age roshan roshan, or pinky , baby manny, sid, , diego returned father. roshan young son of human tribe chief. while sleeping 1 morning, tribe attacked pack of smilodons. leader of pack, soto, wants kill roshan revenge roshan s father runar killing half pack , using skin clothes , flesh food. mother, nadia, able fend off diego, mission retrieve him. however, cornered on waterfall and, in desperate attempt save son, leaps on waterfall, holding roshan tightly in arms. both found manny , sid @ riverside. using little strength has left, gives roshan manny , sid in hopes safe them. roshan s primary care-provider sid, member of group has concern him, manny being disillusioned care , diego secretly planning kill him. manny, scarred previous experience humans, reluctant have baby, bonds him. @ end of movie, roshan reunited tribe. r...
Read more

Beiyang clique in power .281911.E2.80.9315.29 Beiyang Army

-
yuan shikai emperor of china (1915–1916). during period 1911–15, yuan shikai remained man hold beiyang army together. , followers resisted attempt kuomintang (kmt) insert outsiders chain of command. negotiated £25-million (sterling) loan five-power banking consortium support beiyang army, despite uproar kmt. in 1913 yuan shikai appointed 4 of loyal lieutenants military governors in southern provinces: duan qirui in anhui, feng guozhang in jiangsu, li shun in jiangxi , tang xiangming in hunan. unified beiyang military clique attained maximum extent of territorial control. exercised firm control on north china , yangtze river provinces. throughout 1914 supported yuan in making revisions constitution give himself treaty- , war-making powers substantial emergency powers (the 3 commanders nicknamed newspapers of time angel, tiger , dog. angel duan qirui, tiger wang shizhen , dog feng guozhang). in december 1915 yuan shikai declared himself emperor. opposed generals , officers of beiyang arm...
Read more

Fulmars, petrels, and shearwaters List of birds of Connecticut

-
sooty shearwater order: procellariiformes   family: procellariidae the procellariids main group of medium-sized true petrels , characterized united nostrils medium septum , long outer functional primary. 7 species have been recorded in connecticut. northern fulmar, fulmarus glacialis (r) black-capped petrel, pterodroma hasitata (r) cory s shearwater, calonectris diomedea (r) great shearwater, ardenna gravis (r) sooty shearwater, ardenna griseus (r) (s) manx shearwater, puffinus puffinus (r) audubon s shearwater, puffinus lherminieri (r) (s)
Read more