• Source: 2014 MV67

2014 MV67 (also written 2014 MV67) is a Mars-crosser and former lost asteroid with an observation arc of less than 1 day. Before its recovery, it had an assumed orbital eccentricity and a very poorly constrained orbit. Depending on the orbit, it could have been a potentially hazardous asteroid, roughly 540 meters (1,770 feet) in diameter, or it could turn out to be a Mars-crosser or even a main-belt asteroid as were the cases with 2004 BX159 and 2010 GZ60. It was recovered by Pan-STARRS in September 2021 and is now known to be a Mars-crossing asteroid.




Description


Main belt asteroids can have perihelia (closest approach to the Sun) as low as 1.7 AU. The 22 March 2022 impact scenario was 87,000 times lower than the background threat generated by unknown asteroids. It was removed from the Sentry Risk Table on 15 April 2021 when JPL transitioned to planetary ephemeris DE441.
It was discovered on 24 June 2014, when the asteroid was estimated to be 1.1 ± 0.84 AU (165 ± 126 million km) from Earth and had a solar elongation of 161 degrees.
The 22 March 2018 and 3 April 2019 virtual impactors did not occur. The uncertainty region of ±10 billion km wraps around the entire orbit so the asteroid could be anywhere on any of the numerous orbit fits. It could be near aphelion (in the asteroid belt) ~3 AU from the Sun. The asteroid was not expected to be near Earth anytime during 2019.
With an almost meaningless 1-day observation arc, the Sentry Risk Table showed an estimated 1 in 3 billion chance of the asteroid impacting Earth on 22 March 2022, which was 87,000 times lower than the background threat. The nominal JPL Horizons 22 March 2022 Earth distance is 2.2 AU (330,000,000 km; 200,000,000 mi) with a 3-sigma uncertainty of ±3 billion km. NEODyS also lists the nominal 22 March 2022 Earth distance as 2.2 AU (330,000,000 km; 200,000,000 mi). And again it is not expected to be near Earth anytime during 2022.




See also


2005 ED224
2007 FT3




Notes






References






External links


2014 MV67 at NeoDyS-2, Near Earth Objects—Dynamic Site
Ephemerides · Observation prediction · Orbital info · MOID · Proper elements · Observational info · Close approaches · Physical info · Orbit animation
2014 MV67 at ESA–space situational awareness
Ephemerides · Observations · Orbit · Physical properties · Summary
2014 MV67 at the JPL Small-Body Database

Kata Kunci Pencarian:

• 2014 MV67
• Sentry (monitoring system)
• 2007 FT3
• 2005 ED224
• List of asteroid close approaches to Earth in 2019
• List of asteroid close approaches to Earth in 2018