Description (4953) 1990 MU

line of intersection of orbits of 1990 mu , earth s ecliptic plane

1990 mu has earth minimum orbit intersection distance (moid) of 0.0276 au (2,570,000 miles), close enough classify potentially hazardous asteroid (pha). make close approach earth on 6 june 2027 @ 0.0308 au (2,870,000 miles), becoming bright apparent magnitude 8.7, , closer on 5 june 2058 @ 0.0231 au (2,150,000 miles). made close approach venus on 5 october 2012 @ 0.0568 au (5,280,000 miles) , again on 3 september 2041 @ 0.0581 au (5,400,000 miles). 1990 mu has made close approaches earth in past; in june 1996 approached within 0.25 au , in may 1990 approached 0.1418 au. earth moid of 1990 mu has been decreasing (becoming more hazardous) during 20th century, while venus moid (0.0455) has been increasing.

besides original discovery @ siding spring observatory in australia, 1990 mu has been studied radar @ goldstone observatory in california, , arecibo observatory in puerto rico. lightcurves have been obtained @ la silla observatory in chile.

the albedo of 1990 mu measured exploreneos project of spitzer space telescope in august 2009. result obtained 0.79 , second highest albedo measured project. however, exploreneo not believe plausible figure, state albedo of neo not on 0.5 , measurement uncertainty around factor of 2 .

the gaia mission of european space agency, launched in december 2013, has been tasked measuring yarkovsky effect on near-earth asteroids (neas). yarkovsky effect small non-gravitational force on rotating bodies can affect trajectories. effect on small bodies asteroids can significant , needs taken account in predicting asteroid s position. 1990 mu has been selected 1 of promising neas measurement gaia.