# 2020 JJ

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Small near-Earth asteroid

2020 JJ Orbit of 2020 JJ Discovery[1] Discovered by Mt. Lemmon Survey Discovery site Mt. Lemmon Obs. Discovery date 4 May 2020 Designations Minor planet category Apollo · NEO Orbital characteristics[2] Epoch 31 May 2020 (JD 2459000.5) Uncertainty parameter 7 Observation arc 0 day Aphelion 2.1425 AU Perihelion 0.8708 AU Semi-major axis 1.5067 AU Eccentricity 0.4220 Orbital period (sidereal) 1.85 yr (675 d) Mean anomaly 350.73° Mean motion 0° 31m 58.44s / day Inclination 11.192° Longitude of ascending node 44.188° Argument of perihelion 237.33° Earth MOID 3.51662×10−6 AU (526 km)[2] Physical characteristics Mean diameter 2.7–6 m[3] Absolute magnitude (H) 29.97±0.09[2] · 30.0[1]

**2020 JJ** is a tiny [near-Earth asteroid](/source/Near-Earth_asteroid) of the [Apollo group](/source/Apollo_asteroid) 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](/source/Astronomical_unit) once every 1 years and 10 months (675 days; [semi-major axis](/source/Semi-major_axis) of 1.51 AU). Its orbit has an [eccentricity](/source/Orbital_eccentricity) of 0.42 and an [inclination](/source/Orbital_inclination) of 11[°](/source/Degree_(angle)) with respect to the [ecliptic](/source/Ecliptic).[2]

## Flyby

On 4 May 2020, it passed 7,000 km above the southern [Pacific Ocean](/source/Pacific_Ocean).[4] It was the closest since [2019 UN13](/source/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

- [List of asteroid close approaches to Earth in 2020](/source/List_of_asteroid_close_approaches_to_Earth_in_2020)

## References

1. ^ [***a***](#cite_ref-MPC-object_1-0) [***b***](#cite_ref-MPC-object_1-1) ["2020 JJ"](https://www.minorplanetcenter.net/db_search/show_object?object_id=2020+JJ). *Minor Planet Center*. Retrieved 5 May 2020.

1. ^ [***a***](#cite_ref-jpldata_2-0) [***b***](#cite_ref-jpldata_2-1) [***c***](#cite_ref-jpldata_2-2) [***d***](#cite_ref-jpldata_2-3) ["JPL Small-Body Database Browser: (2020 JJ)"](https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=54016959;cad=1) (2020-05-04 last obs.). [Jet Propulsion Laboratory](/source/Jet_Propulsion_Laboratory). Retrieved 5 May 2020.

1. ^ [***a***](#cite_ref-watchers_3-0) [***b***](#cite_ref-watchers_3-1) [***c***](#cite_ref-watchers_3-2) [Asteroid 2020 JJ flew past Earth at just 0.03 LD on May 4 -- the closest of the year and 6th closest on record](https://watchers.news/2020/05/04/asteroid-2020-jj/) 4 May 2020

1. **[^](#cite_ref-4)** @tony873004 (4 May 2020). ["A few hours ago, newly-discovered asteroid C2QQFV2 passed only 7000 km above the South Pacific Ocean. It was in Ear..."](https://twitter.com/tony873004/status/1257423820627083264) ([Tweet](/source/Tweet_(social_media))) – via [Twitter](/source/Twitter).

## External links

- [2020 JJ](https://newton.spacedys.com/astdys/index.php?n=&pc=1.1.0) at *AstDyS-2, Asteroids—Dynamic Site* - [Ephemeris](https://newton.spacedys.com/astdys/index.php?n=&pc=1.1.3.0) **·** [Observation prediction](https://newton.spacedys.com/astdys/index.php?n=&pc=1.1.4.0) **·** [Orbital info](https://newton.spacedys.com/astdys/index.php?n=&pc=1.1.1) **·** [Proper elements](https://newton.spacedys.com/astdys/index.php?n=&pc=1.1.6) **·** [Observational info](https://newton.spacedys.com/astdys/index.php?n=&pc=1.1.7.0)

- [2020 JJ](https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=54016959) at the *[JPL Small-Body Database](/source/JPL_Small-Body_Database)* - [Close approach](https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=54016959&view=C) **·** [Discovery](https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=54016959&view=D) **·** [Ephemeris](https://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=54016959) **·** [Orbit viewer](https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=54016959&view=V) **·** [Orbit parameters](https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=54016959&view=O) **·** [Physical parameters](https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=54016959&view=P)

v t e 2020 in space « 2019 2021 » Space probe launches Solar Orbiter (Feb 2020) Hope (Jul 2020) Tianwen-1 (Jul 2020) Mars 2020 (Jul 2020) Perseverance rover Mars Helicopter Ingenuity Chang'e 5 (lunar sample return mission; Nov 2020) Impact events 2020 China bolide Selected NEOs Asteroid close approaches 594913 ꞌAylóꞌchaxnim (809875) 2020 BX12 2020 CW 2020 CD3 (temporary satellite) (52768) 1998 OR2 2020 HS7 2020 JJ 2020 LD (163348) 2002 NN4 2020 OY4 2020 QG 2011 ES4 2018 VP1 2020 SO (space debris) 2020 SW 2020 SL1 2020 UA 2020 VV 2020 VT4 (153201) 2000 WO107 (501647) 2014 SD224 (614689) 2020 XL5 Exoplanets AU Mic b Gliese 414 Ab Ac Gliese 433 b c d GJ 1151 b radio emissions K2-315b Kepler-1649c KOI-456.04 Lacaille 9352 b c M51-ULS-1b OGLE-2016-BLG-1928L (rogue planet) Tau Ceti j (predicted) TOI-561 b c d e TOI-700 b c d TOI-732 b c TOI-1338 b TOI-1339 b c d TYC 8998-760-1 c WD 1856+534 b Discoveries Betelgeuse dimming FRB 180916 location and periodicity Radcliffe wave Ophiuchus Supercluster explosion PSO J03094+27 (distant blazar) 2MASS J1047+21 wind speed measurements SGR 1935+2154 (soft gamma ray repeater) HR 6819 black hole hypothesis PHL 293B ending of P Cygni profile hydrogen emission lines Swift J1818.0–1607 (young magnetar) GW190814 (announced) South Pole Wall GW190521 (announced) Phosphine detection in the atmosphere of Venus Water detection on the sunlit surface of the Moon Comets C/2019 Y4 (ATLAS) P/2019 LD2 (ATLAS) C/2017 T2 (PANSTARRS) C/2020 F8 (SWAN) C/2019 U6 (LEMMON) C/2020 F3 (NEOWISE) 2P/Encke 88P/Howell C/2020 M3 (ATLAS) 156P/Russell–LINEAR C/2020 S3 (Erasmus) Space exploration Spitzer retirement (Jan 2020) BepiColombo (Earth gravity assist; Apr 2020, Venus gravity assist; Oct 2020) OSIRIS-REx (sample collection from asteroid Bennu; Oct 2020) Hayabusa2 (sample return from asteroid Ryugu; Dec 2020) Chang'e 5 (lunar sample return; Dec 2020) Outer space portal Category:2019 in outer space — Category:2020 in outer space — Category:2021 in outer space

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Adapted from the Wikipedia article [2020 JJ](https://en.wikipedia.org/wiki/2020_JJ) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/2020_JJ?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.