2020 AP1
| Discovery Perihelion | 0.9810 AU (146,760,000 km) (q) | |
|---|---|---|
| 1.588 AU (237,600,000 km) (a) | ||
| Eccentricity | 0.3824 (e) | |
| 2.002 yr | ||
| 77.83° (M) | ||
| Inclination | 2.256° (i) | |
| 101.2° (Ω) | ||
| 25 December 2021 | ||
| 349.7° (ω) | ||
| Earth MOID | 0.0014 AU (210,000 km; 0.54 LD) | |
| Jupiter MOID | 3.0 AU (450,000,000 km) | |
| Physical characteristics | ||
Mean diameter | 3–7 meters (CNEOS) | |
| 29.6[2] | ||
2020 AP1 is an
LD
) from Earth on 7 January 2022, but with an uncertainty of ±8 days for the close approach date it could have passed significantly closer or further.
| Date | JPL SBDB geocentricnominal distance |
uncertainty region ( 3-sigma )
|
|---|---|---|
| 2022-01-07.7 ± 8.3 days | 1.7 million km | ± 2.5 million km[3] |
Discovery
2020 AP1 came to
waxing gibbous moon in the sky, it was only observed for 1 day. The Earth approach increased the asteroid's orbital period
by roughly 21 days.
2022
The asteroid came to perihelion around 25 December 2021. The poorly constrained orbit has the asteroid passing 0.01
LD) from Earth on 7 January 2022 with an uncertainty region of about ±2.5 million km extending over ±8 days.[2]
The
Sentry Risk Table[4]
because Sentry accounts for orbit propagation nonlinearities along the line of variations and the nonlinearities do not intersect where Earth will be.
See also
- 2018 AH – Short arc object approaching in December 2021
- 2009 JF1 – Short arc object possibly approaching in May 2022
References
- ^ a b "MPEC 2020-A67 : 2020 AP1". IAU Minor Planet Center. 5 January 2020. Retrieved 18 December 2020. (K20A01P)
- ^ a b c d e f g "JPL Small-Body Database Browser: (2020 AP1)" (last observation: 2020-01-05; arc: 1 day). Jet Propulsion Laboratory. Archived from the original on 17 December 2020. Retrieved 18 December 2020.
- ^ "Horizons Batch for 2022-Jan-07 17:32 UT". JPL Horizons. Archived from the original on 20 December 2021. Retrieved 20 December 2021.
- ^ 2020 AP1 is not listed on the Sentry Risk Table
External links
- List Of Apollo Minor Planets (by designation), Minor Planet Center
- 2020 AP1 at NeoDyS-2, Near Earth Objects—Dynamic Site
- 2020 AP1 at ESA–space situational awareness
- 2020 AP1 at the JPL Small-Body Database
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