(4034) 1986 PA

Infobox Planet | discovery= yes | physical_characteristics = yes | bgcolour=#FFFFC0
name=(4034) 1986 PAcite web | title="JPL Small-Body Database Browser" | url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=4034 | accessdate= October 14 | accessyear= 2007 ]
discoverer=Helin, E. F. at Palomar
discovered=August 2, 1986
epoch=April 10, 2007 (JD 2454200.5) TDB
semimajor=1.060AU
perihelion=0.589 AU
aphelion=1.530 AU
eccentricity=0.444
period=398.356d (1.09 a)
inclination=11.168°
asc_node=158.033°
arg_peri=296.552°
mean_anomaly=237.435°
dimensions=0.8 km
rotation=
abs_magnitude=18.1
albedo=

(4034) 1986 PA is an Apollo asteroid, 0.8 kilometers in diameter. It completes one revolution around the Sun almost once every year. It was disclovered by Eleanor F. Helin at the Palomar Observatory in San Diego County, California on August 2, 1986. It is an O-type asteroid, meaning it is similar to the asteroid 3628 Boznemcová, which is the best asteroid match to the spectra of L6 and LL6 ordinary chondrite meteorites. L and LL chondrites have lower iron and metal content, but higher iron oxide content in the silicates. [cite web | title="Meteorite.fr - Classification - Stony Meteorites - Ordinary Chondrites" | url=http://www.meteorite.fr/en/classification/ordinarychon.htm | accessdate= October 14 | accessyear= 2007 ]

Its highly eccentric orbit crosses the orbits of Venus, Earth, and Mars. From 1800 to 2200 the asteroid passes within 30 Gm of Venus 71 times, Earth 29 times, and Mars 7 times.

References