2018 LF16

2018 LF16 is a small near-Earth asteroid of the Amor group, first observed by astronomers with the Pan-STARRS survey at Haleakala Observatory on 14 June 2018. Based on limited observations, early estimates of its size of 213 m (699 ft) would make it extremely destructive if it collided with Earth, but predicted orbits make a collision unlikely.

2018 LF16
The best inclined orbit is currently completely outside Earth's orbit, with markers every 30 days of motion.
Discovery [1]
Discovered byPan-STARRS 1
Discovery siteHaleakala Obs.
Discovery date14 June 2018
Designations
2018 LF16
NEO · Amor [1][2]
Orbital characteristics [2]
Epoch 15 June 2018 (JD 2458284.5)
Uncertainty parameter 9
Observation arc1.8 days[3]
Aphelion2.6756 AU
Perihelion1.1432 AU
1.9094 AU
Eccentricity0.4013
2.64 yr (964 d)
313.01°
0° 22m 24.96s / day
Inclination15.473°
166.30°
188.78°
Earth MOID0.138 AU (53.9 LD)
Physical characteristics
Mean diameter
213 m[3]
280 m[4]
20.3[1]
20.5[2][4]
21.0[3]

    In November 2018, news article headlines exaggerated[5] claims of 62 potentially dangerous Earth-orbit crossings in the next century but also reported NASA calculations indicating there is only a 1 in 30,000,000 chance of impact.[6] Additionally, 2018 LF16 is rated at 0 on the Torino Scale, meaning that the chance of impact is so low as to effectively be zero. The observation arc extends only 1.8 days,[3] leaving large uncertainties in its predicted motion,[7][8] causing 2018 LF16 to be considered a lost asteroid.[9]

    Its current best orbit leaves it entirely outside of Earth's orbit, never coming closer than 0.13 AU to Earth (MOID).

    It is placed 9492nd on near-Earth asteroid Tisserand parameters list.[10]

    References
    1. "2018 LF16". Minor Planet Center. Retrieved 7 January 2019.
    2. "JPL Small-Body Database Browser: (2018 LF16)" (2018-06-16 last obs.). Jet Propulsion Laboratory. Retrieved 7 January 2019.
    3. "Sentry: Earth Impact Monitoring - Object Details 2018 LF16". Jet Propulsion Laboratory. Retrieved 6 August 2020.
    4. "ESA space situational awareness 2018LF16". European Space Agency. Retrieved 6 August 2020.
    5. Wehner, Mike (26 November 2018). "No, asteroid 2018 LF16 probably isn't going to hit the Earth". Boy Genius Report.
    6. Kettley, Sebastian (25 November 2018). "NASA asteroid WARNING: 700-foot-wide space rock on 62 RISK trajectories with Earth by 2023". Express.co.uk. Retrieved 26 November 2018.
    7. "MPC Ephemerides for Visible Risk-Listed Objects". www.hohmanntransfer.com. Retrieved 26 November 2018.
    8. Chamberlin, Alan. "JPL Small-Body Database Browser". ssd.jpl.nasa.gov. Retrieved 26 November 2018.
    9. "NEODyS-2 - Near Earth Objects - Dynamic Site - Risk List". SpaceDys. Retrieved 6 August 2020.
    10. "Near-Earth Asteroid Tisserand Parameters". Jet Propulsion Laboratory. Retrieved 6 August 2020.
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