2020 UA
Discovery [1][2]
Discovered byMount Lemmon Survey
Discovery siteMt. Lemmon Obs.
Discovery date16 October 2020
Designations
2020 UA
C3K1WP2 [3][4]
NEO · Aten [5]
Orbital characteristics [5]
Epoch 31 May 2020 (JD 2459000.5)
Uncertainty parameter 4
Observation arc4 days
Aphelion1.206 AU
Perihelion0.7537 AU
0.980 AU
Eccentricity0.23093
0.97 yr
133.866°
1° 0m 57.005s / day
Inclination2.762°
27.909°
20 January 2020 05:17 UT [5]
27.909°
Earth MOID0.000204 AU (30,500 km)
Physical characteristics
Mean diameter
5–12 m (assumed albedo 0.05–0.25)[6]
20.8 (at discovery)[1]
28.39±0.38[5]
28.43[2]

2020 UA is a tiny near-Earth asteroid around 5–12 metres (16–39 ft) across that passed within 46,100 km (28,600 mi) of Earth on 21 October 2020 at 02:00 UT.[5]

References

  1. ^ a b "MPEC 2020-U52 : 2020 UA". Minor Planet Electronic Circular. Minor Planet Center. 17 October 2020. Retrieved 19 January 2021.
  2. ^ a b "2020 UA". Minor Planet Center. International Astronomical Union. Retrieved 19 January 2021.
  3. ^ "2020 UA". NEO Exchange. Las Cumbres Observatory. 19 October 2020. Retrieved 19 January 2021.
  4. ^ Gray, Bill (17 October 2020). ""Pseudo-MPEC" for C3K1WP2". Project Pluto. Retrieved 19 January 2021.
  5. ^ a b c d e "JPL Small-Body Database Browser: 2020 UA" (2020-10-20 last obs.). Jet Propulsion Laboratory. Retrieved 19 January 2021.
  6. ^ Bruton, Dan. "Conversion of Absolute Magnitude to Diameter for Minor Planets". Department of Physics, Engineering, and Astronomy. Stephen F. Austin State University. Archived from the original on 23 July 2011. Retrieved 19 January 2021.

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