Astronomy:2022 FD1

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2022 FD1
Discovery[1][2]
Discovered byK. Sárneczky
Discovery sitePiszkéstető Stn.
Discovery date24 March 2022
Designations
2022 FD1
Sar2594[3]
Minor planet categoryNEO · Apollo[4][1]
Orbital characteristics[4]
Epoch 21 January 2022 (JD 2459600.5)
Uncertainty parameter 6
Observation arc8.4 hours[1]
|{{{apsis}}}|helion}}2.653 AU
|{{{apsis}}}|helion}}0.719 AU
1.686 AU
Eccentricity0.5735
Orbital period2.19 yr (800 days)
Mean anomaly309.949°
Mean motion0° 27m 0.765s / day
Inclination9.446°
Longitude of ascending node4.374°
256.448°
Earth MOID0.000168 AU (25,100 km)
Jupiter MOID2.51 AU
Physical characteristics
Mean diameter2–4 m[3]
Absolute magnitude (H)31.02±0.28[4]


2022 FD1 is a small, metre-sized Apollo near-Earth asteroid that was eclipsed by Earth and made its closest approach 8,470 km (5,260 mi) from Earth's surface on 25 March 2022.[lower-alpha 1] It entered Earth's shadow at 8:10 UTC and became invisible until egress at 8:45 UTC.[5] Its brightness from Earth reached a peak apparent magnitude of 13 shortly before closest approach at 09:13 UTC.[6] By that time, the asteroid was moving at a speed of 18.5 km/s (11.5 mi/s) relative to Earth and was located in the far Southern hemisphere sky.[4][6]

2022 FD1 was discovered on 24 March 2022, by astronomer Krisztián Sárneczky at Konkoly Observatory's Piszkéstető Station in Budapest, Hungary.[2] It was his next near-Earth asteroid discovery after the impactor 2022 EB5 from early March 2022.[3]

Animation of 2022 FD1 around Sun
  Sun ·   Earth ·   2022 FD1
Orbital Elements
Parameter Epoch Period
(p) 		Aphelion
(Q) 		Perihelion
(q) 		Semi-major axis
(a) 		Eccentricity
(e) 		Inclination
(i)
Units (days) AU (°)
Pre-flyby 2021 March 13[4] 928 2.863 0.790 1.863 0.567 9.440
Post-flyby 2022-Dec-17[1][6] 795 2.610 0.751 1.681 0.553 4.490

Notes

  1. ↑ Earth has a radius of 6,371 km and 2022 FD1 nominally passed about 14,845+8
    −7     km     from the center of Earth. The asteroid's distance from Earth's surface at closest approach is the difference between the asteroid closest approach radius and Earth's radius. (14,845 – 6,371 = 8,474)

References

  1. ↑ Jump up to: 1.0 1.1 1.2 1.3 "2022 FD1". Minor Planet Center. http://www.minorplanetcenter.net/db_search/show_object?object_id=2022+FD1. Retrieved 26 March 2022. 
  2. ↑ Jump up to: 2.0 2.1 "MPEC 2022-F48 : 2022 FD1". Minor Planet Electronic Circular. Minor Planet Center. 25 March 2022. https://minorplanetcenter.net/mpec/K22/K22F48.html. Retrieved 26 March 2022. 
  3. ↑ Jump up to: 3.0 3.1 3.2 Whitt, Kelly Kizer (25 March 2022). "Whoa! Another asteroid whizzes past Earth hours after discovery". EarthSky. https://earthsky.org/space/another-asteroid-near-earth-hours-after-discovery-sar2594/. Retrieved 26 March 2022. 
  4. ↑ Jump up to: 4.0 4.1 4.2 4.3 4.4 "JPL Small-Body Database Browser: (2022 FD1)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=2022FD1&view=OPC. Retrieved 26 March 2022. 
  5. ↑ Gray, Bill J. (25 March 2022). "Re: Total NEO eclipse!". https://groups.io/g/mpml/message/37482. Retrieved 26 March 2022. 
  6. ↑ Jump up to: 6.0 6.1 6.2 "JPL Horizons On-Line Ephemeris for 2022 FD1 on 2022-Mar-25". JPL Horizons On-Line Ephemeris System. Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&COMMAND=%272022+FD1%27&START_TIME=%272022-03-25%27&STOP_TIME=%272022-03-26%27&STEP_SIZE=%271%20minutes%27&QUANTITIES=%271,9,20,23%27&CENTER=%27500%27. Retrieved 26 March 2022.  Ephemeris Type: Elements and Center: 500. Note that there is no magnitude drop during the Earth eclipse between 8:10–8:45 UT as JPL Horizons does not take Earth's shadow into account.

External links



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