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 arc2 days
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
20.3[1]
20.517[2]

    In November 2018, news article headlines exaggerated[3] 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.[4] 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 2 days, leaving large uncertainties in its prediction motion.[5][6]

    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 7862nd on near-Earth asteroid Tisserand parameters list.[7]

    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. No, asteroid 2018 LF16 probably isn’t going to hit the Earth
    4. 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.
    5. "MPC Ephemerides for Visible Risk-Listed Objects". www.hohmanntransfer.com. Retrieved 26 November 2018.
    6. Chamberlin, Alan. "JPL Small-Body Database Browser". ssd.jpl.nasa.gov. Retrieved 26 November 2018.
    7. Near-Earth Asteroid Tisserand Parameters

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