Astronomy:2022 FD1
| Discovery[1][2] | |
|---|---|
| Discovered by | K. Sárneczky |
| Discovery site | Piszkéstető Stn. |
| Discovery date | 24 March 2022 |
| Designations | |
| 2022 FD1 | |
| Sar2594[3] | |
| Minor planet category | NEO · Apollo[4][1] |
| Orbital characteristics[4] | |
| Epoch 21 January 2022 (JD 2459600.5) | |
| Uncertainty parameter 6 | |
| Observation arc | 8.4 hours[1] |
| |{{{apsis}}}|helion}} | 2.653 AU |
| |{{{apsis}}}|helion}} | 0.719 AU |
| 1.686 AU | |
| Eccentricity | 0.5735 |
| Orbital period | 2.19 yr (800 days) |
| Mean anomaly | 309.949° |
| Mean motion | 0° 27m 0.765s / day |
| Inclination | 9.446° |
| Longitude of ascending node | 4.374° |
| 256.448° | |
| Earth MOID | 0.000168 AU (25,100 km) |
| Jupiter MOID | 2.51 AU |
| Physical characteristics | |
| Mean diameter | 2–4 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]
| 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
References
- ↑ 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.
- ↑ 2.0 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.
- ↑ 3.0 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.
- ↑ 4.0 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.
- ↑ Gray, Bill J. (25 March 2022). "Re: Total NEO eclipse!". https://groups.io/g/mpml/message/37482. Retrieved 26 March 2022.
- ↑ 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
- 2022 FD1 at NeoDyS-2, Near Earth Objects—Dynamic Site
- Ephemeris · Obs prediction · Orbital info · MOID · Proper elements · Obs info · Close · Physical info · NEOCC
- 2022 FD1 at ESA–space situational awareness
- 2022 FD1 at the JPL Small-Body Database
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