From Surf Wiki (app.surf) — the open knowledge base

2004 FU162

Closest known Earth approach until 2008

Field	Value
minorplanet	yes
name
background	#FFC2E0
discovery_ref
mpc_name
alt_names
mp_category	AtenNEO
orbit_ref
epoch	5 April 2004 (JD 2453100.5)
uncertainty	9
observation_arc	44 minutes
(only 4 observations)
aphelion	1.1511 AU
perihelion	0.5026 AU
semimajor	0.8269 AU
eccentricity	0.3922
period	0.75 yr (275 days)
mean_anomaly	262.67°
mean_motion	/ day
inclination	4.1647°
asc_node	191.25°
arg_peri	139.78°
moid	0.0001 AU
dimensions	4–12 meters (estimated)
abs_magnitude	28.7

(only 4 observations)

**** is an Aten near-Earth asteroid less than 20 meters in diameter crudely estimated to have passed roughly 6500 km above the surface of Earth on 31 March 2004.

It was only observed for 44 minutes on 31 March 2004, by the Lincoln Near-Earth Asteroid Research (LINEAR) team at Lincoln Laboratory's Experimental Test Site in Socorro, New Mexico, and remains a lost asteroid. The estimated 4 to 6 meter sized body made one of the closest known approaches to Earth.

Description

On 31 March 2004, around 15:35 UTC, the asteroid is crudely estimated to have passed within approximately 1 Earth radius () or 6,400 kilometers of the surface of the Earth (or 2.02 from Earth's center). But due to the very short observation arc, the uncertainty in the close approach distance is a large ±15000 km. By comparison, geostationary satellites orbit at 5.6 and GPS satellites orbit at 3.17 from the center of the Earth.

this was the third or fourth closest approach. The first observation of was not announced until 22 August 2004.

It was only observed four times in the space of 44 minutes and could not be followed up. Nevertheless, "the orbit is quite determinate and, given the exceptional nature of this close approach, the object is now receiving a designation". No precovery images have been found.

is estimated to be approximately 6 meters in diameter. This means that it would burn up from atmospheric friction before striking the ground in the case of an Earth impact.

On 26 March 2010, it may have come within 0.0825 AU (12.3 million km) of Earth, but with an uncertainty parameter of 9, the orbit is poorly determined.

Another, larger near-Earth asteroid, 2004 FH passed just two weeks prior to .

A closer non-impacting approach to Earth was not known until on 9 October 2008.

Notes

References

|archive-url=https://web.archive.org/web/20201128181049/http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2004FU162;cad=1 |archive-date=2020-11-28 |url-status=live

|archive-date=5 November 2016 |archive-url=https://web.archive.org/web/20161105153448/http://www.hohmanntransfer.com/mn/0408/22.htm |url-status=dead

References

Yeomans, Donald K.. "Horizon Online Ephemeris System". California Institute of Technology, Jet Propulsion Laboratory.

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

aten-asteroids minor-planet-object-articles-(unnumbered) near-earth-objects-in-2004 astronomical-objects-discovered-in-2004 lost-minor-planets

Want to explore this topic further?

Ask Mako anything about 2004 FU162 — get instant answers, deeper analysis, and related topics.

Research with Mako

Free with your Surf account

Content sourced from Wikipedia, available under CC BY-SA 4.0.

This content may have been generated or modified by AI. CloudSurf Software LLC is not responsible for the accuracy, completeness, or reliability of AI-generated content. Always verify important information from primary sources.

Report