Astronomy:2023 WK3
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Short description: Near-Earth object of the Atira group
| Discovery [1] | |
|---|---|
| Discovered by | Zwicky Transient Facility |
| Discovery site | Moonbase South Observatory, Hakos |
| Discovery date | 21 November 2023 (first observed only) |
| Designations | |
| 2023 WK3 | |
| Minor planet category | NEO · Atira [1] |
| Orbital characteristics [2] | |
| Epoch 13 September 2023 (JD 2460200.5) | |
| Uncertainty parameter 7 | |
| Observation arc | 22 days |
| |{{{apsis}}}|helion}} | 0.9660 AU |
| |{{{apsis}}}|helion}} | 0.3221 AU |
| 0.64407 AU | |
| Eccentricity | 0.4999 |
| Orbital period | 0.5169 yr (188.80 d) |
| Mean anomaly | 47.94° |
| Mean motion | 1° 54m 24.48s / day |
| Inclination | 24.49° |
| Longitude of ascending node | 235.061° |
| 11.117° | |
| Earth MOID | 0.0376212 AU |
| Physical characteristics | |
| Mean diameter | 450–550 m (est. at 0.05–0.15) |
| Absolute magnitude (H) | 20.5±0.4[2] |
2023 WK3 is a near-Earth object of the Atira group.
Discovery
2023 WK3 was discovered at G=19.5 mag on 2023 November 21 by G. Duszanowicz using the 0.28-m f/1.9 reflector + CMOs camera of the Moonbase South Observatory (observatory code M87), Hakos.[3]
Orbit and classification
It orbits the Sun at a distance of 0.32–0.97 AU once every 6 months (189 days; semi-major axis of 0.64 AU). Its orbit has an eccentricity of 0.5 and a somewhat high inclination of 24° with respect to the ecliptic.[2] It could be a fragment or a former moon of a larger present-day Atira.[4]
Numbering and naming
As of 2023, this minor planet has neither been numbered nor named by the Minor Planet Center.
References
- ↑ 1.0 1.1 "2023 WK3". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?utf8=%E2%9C%93&object_id=2023+WK3.
- ↑ 2.0 2.1 2.2 "JPL Small-Body Database Browser: (2023 WK3)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=2023%20WK3.
- ↑ "MPEC 2023-W132 : 2023 WK3". Minor Planet Electronic Circular. 26 November 2023. https://www.minorplanetcenter.net/mpec/K23/K23WD2.html.
- ↑ de la Fuente Marcos, Carlos; de la Fuente Marcos, Raúl (20 December 2023). "Baked before Breaking into Bits: Evidence for Atira-type Asteroid Splits". Research Notes of the American Astronomical Society 7 (12): 278 (3 pages). doi:10.3847/2515-5172/ad16de. Bibcode: 2023RNAAS...7..278D. https://iopscience.iop.org/article/10.3847/2515-5172/ad16de.
External links
- 2023 WK3 at NeoDyS-2, Near Earth Objects—Dynamic Site
- Ephemeris · Obs prediction · Orbital info · MOID · Proper elements · Obs info · Close · Physical info · NEOCC
- 2023 WK3 at the JPL Small-Body Database
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