Astronomy:2020 HA10
From HandWiki
| Discovery [1] | |
|---|---|
| Discovered by | Mount Lemmon Survey |
| Discovery site | Mount Lemmon Obs. |
| Discovery date | 28 April 2020 (first observed only) |
| Designations | |
| 2020 HA10 | |
| Minor planet category | NEO · Atira [1] |
| Orbital characteristics [2] | |
| Epoch 30 April 2020 (JD 2458969.5) | |
| Uncertainty parameter 8 | |
| Observation arc | 5 days |
| |{{{apsis}}}|helion}} | 0.9471 AU |
| |{{{apsis}}}|helion}} | 0.6937 AU |
| 0.8204 AU | |
| Eccentricity | 0.1544 |
| Orbital period | 0.74 yr (271.4 d) |
| Mean anomaly | 117.5° |
| Mean motion | 1° 19m 33.6s / day |
| Inclination | 49.66° |
| Longitude of ascending node | 103.46° |
| 27.1° | |
| Earth MOID | 0.087 AU |
| Physical characteristics | |
| Mean diameter | 100–500 m (est. at 0.05–0.15) |
| Absolute magnitude (H) | 19.1±0.8[2] |
2020 HA10 is a near-Earth object of the Atira group.
Discovery
2020 HA10 was discovered at G=20.4 mag on 2020 April 28 by the Mount Lemmon Survey using the 0.5 m reflector + 10 K CCD.[3]
Orbit and classification
It orbits the Sun at a distance of 0.7–0.9 AU once every 9 months (271 days; semi-major axis of 0.82 AU). Its orbit has an eccentricity of 0.15 and an unusually high inclination of 50° with respect to the ecliptic.[2]
The orbital evolution of 2020 HA10 leads the object into the Aten orbital realm periodically.[4]
References
- ↑ 1.0 1.1 "2020 HA10". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=2020+HA10. Retrieved 17 August 2020.
- ↑ 2.0 2.1 2.2 "JPL Small-Body Database Browser: (2020 HA10)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=54016935. Retrieved 17 August 2020.
- ↑ "MPEC 2020-J11 : 2020 HA10". Minor Planet Electronic Circular. 1 May 2020. https://www.minorplanetcenter.net/mpec/K20/K20J11.html. Retrieved 18 August 2020.
- ↑ de la Fuente Marcos, Carlos; de la Fuente Marcos, Raúl (30 July 2020). "Near the Edge of the Atira Orbital Realm: Short-term Dynamical Evolution of 2020 HA10 and 2020 OV1". Research Notes of the American Astronomical Society 4 (7): 123. doi:10.3847/2515-5172/abaa4f. Bibcode: 2020RNAAS...4..123D.
External links
- 2020 HA10 at NeoDyS-2, Near Earth Objects—Dynamic Site
- Ephemeris · Obs prediction · Orbital info · MOID · Proper elements · Obs info · Close · Physical info · NEOCC
- 2020 HA10 at the JPL Small-Body Database
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