2020 JJ
Orbit of 2020 JJ
Discovery [1]
Discovered byMt. Lemmon Survey
Discovery siteMt. Lemmon Obs.
Discovery date4 May 2020
Designations
2020 JJ
Apollo · NEO
Orbital characteristics [2]
Epoch 31 May 2020 (JD 2459000.5)
Uncertainty parameter 7
Observation arc0 day
Aphelion2.1425 AU
Perihelion0.8708 AU
1.5067 AU
Eccentricity0.4220
1.85 yr (675 d)
350.73°
0° 31m 58.44s / day
Inclination11.192°
44.188°
237.33°
Earth MOID3.51662×10−6 AU (526 km)[2]
Physical characteristics
Mean diameter
2.7–6 m[3]
29.97±0.09[2] · 30.0[1]

    2020 JJ is a tiny near-Earth asteroid of the Apollo group that passed 7,000 kilometres (4,300 mi) from the surface of Earth on 4 May 2020. It is estimated to be between 3 and 6 meters in diameter.[3]

    Orbit and classification

    2020 JJ orbits the Sun at a distance of 0.9–2.1 AU once every 1 years and 10 months (675 days; semi-major axis of 1.51 AU). Its orbit has an eccentricity of 0.42 and an inclination of 11° with respect to the ecliptic.[2]

    Flyby

    On 4 May 2020, it passed 7,000 km above the southern Pacific Ocean.[4] It was the closest since 2019 UN13 on 31 October 2019.[3]

    2020 JJ flyby with 1 minute markers, flying left to right. Red shows Earth's shadow.

    See also

    References

    1. 1 2 "2020 JJ". Minor Planet Center. Retrieved 5 May 2020.
    2. 1 2 3 4 "JPL Small-Body Database Browser: (2020 JJ)" (2020-05-04 last obs.). Jet Propulsion Laboratory. Retrieved 5 May 2020.
    3. 1 2 3 Asteroid 2020 JJ flew past Earth at just 0.03 LD on May 4 -- the closest of the year and 6th closest on record 4 May 2020
    4. ↑ @tony873004 (May 4, 2020). "A few hours ago, newly-discovered asteroid C2QQFV2 passed only 7000 km above the South Pacific Ocean. It was in Ear…" (Tweet) – via Twitter.


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