(845854) 2018 LF16

Mars-crossing asteroid January 2019 yes (845854) 2018 LF 16 #FA8072 2018_LF16-orbit.png The best inclined orbit is currently completely outside Earth's orbit, with markers every 30 days of motion. Pan-STARRS 1 Haleakala Obs. 14 June 2018 (845854) 2018 LF 16 Mars crossing asteroid 15 June 2018 (JD 2458284.5) 0 15 years 1.968 AU(on 2023-Sep-16) 1.5673 AU 2022-Jul-14 1.7679 AU 0.11347 2.35 yr (622 d) 10.87° 0.3736 ms / day 21.903° 210.28° 306.89° 0.61 AU e6km unit 213 m400 m300-670 meters 19.75 (845854) 2018 LF 16 is a small Mars crossing asteroid roughly 213 m ft on in diameter. It was first observed by astronomers with the Pan-STARRS survey at Haleakala Observatory on 14 June 2018. It was removed from the Sentry Risk Table on 29 July 2021. With an observation arc of 15 years the orbit is very well known and it does not make any notable approaches to Earth. In November 2018, when the asteroid had an observation arc of 1.8 days, news article headlines exaggeratedWehner Mike No, asteroid 2018 LF16 probably isn't going to hit the Earth https://bgr.com/2018/11/26/asteroid-2018-lf16-earth-impact-odds/ Boy Genius Report November 26, 2018 claims of 62 potentially dangerous Earth-orbit crossings in the next century but also reported NASA calculations indicating there was only a 1 in 30,000,000 chance of impact.https://www.express.co.uk/news/science/1050061/NASA-asteroid-warning-Earth-collision-risk-2023-Asteroid-LF16 NASA asteroid WARNING: 700-foot-wide space rock on 62 RISK trajectories with Earth by 2023 Kettley Sebastian 2018-11-25 Express.co.uk 2018-11-26 en Additionally, 2018 LF 16 was rated at 0 on the Torino Scale, meaning that the chance of impact was so low as to effectively be zero. The observation arc extended only 1.8 days, leaving large uncertainties in its predicted motion,http://www.hohmanntransfer.com/crt_ephem.htm MPC Ephemerides for Visible Risk-Listed Objects www.hohmanntransfer.com 2018-11-26 26 November 2018 https://web.archive.org/web/20181126221516/http://www.hohmanntransfer.com/crt_ephem.htm deadhttps://ssd.jpl.nasa.gov/sbdb.cgi?sstr=3825519#content JPL Small-Body Database Browser Chamberlin Alan ssd.jpl.nasa.gov en 2018-11-26 causing 2018 LF 16 to be considered a lost asteroid. +Obsolete 2023 Virtual Impactor Date JPL Horizonsnominal geocentricdistance (AU) uncertaintyregion(3-sigma)2023-08-07 1.09977 AU e6km unit on ± 142 km With an observation arc of 15 years, it is known that its orbit leaves it entirely outside of Earth's orbit, never coming closer than 0.61 AU e6km unit to Earth (MOID). On 7 August 2023 the asteroid was roughly 1.1 AU e6km unit from Earth with an uncertainty region of ±142 km. It reached aphelion (farthest point from the Sun) on 16 September 2023. It will pass 0.080 AU e6km unit from Mars on 6 July 2027. References 30em 2021-11-26 last obs. JPL Small-Body Database Browser: (2018 LF16) https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=3825519&view=OPC Jet Propulsion Laboratory https://archive.today/20220723010842/https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html%23/?sstr=2018LF16&view=OPC 2022-07-23 live 7 January 2019 2018 LF16 Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=2018+LF16 7 January 2019 ESA space situational awareness 2018LF16 http://neo.ssa.esa.int/search-for-asteroids?tab=summary&des=2018LF16 European Space Agency August 6, 2020 Sentry: Earth Impact Monitoring - Object Details 2018 LF16 https://cneos.jpl.nasa.gov/sentry/details.html#?des=2018%20LF16 Jet Propulsion Laboratory August 6, 2020 NEODyS-2 - Near Earth Objects - Dynamic Site - Risk List SpaceDys https://newton.spacedys.com/neodys/index.php?pc=4.1 https://web.archive.org/web/20210419015904/https://newton.spacedys.com/neodys/index.php?pc=4.1 2021-04-19 dead August 6, 2020 Horizons Batch for 2023-08-07 JPL Horizons https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&COMMAND=%272018+LF16%27&START_TIME=%272023-08-07%27&STOP_TIME=%272023-08-08%27&STEP_SIZE=%272%20day%27&QUANTITIES=%2719,20,39%27 2022-07-21 (Obsolete Impactor Table) External links 2018+LF16 2018LF16 3825519 845854 (845854) 2018 LF 16 Category:Mars-crossing asteroids Category:Discoveries by Pan-STARRS Category:Near-Earth objects removed from the Sentry Risk Table 20180614