| Discovery | |
|---|---|
| Discovered by | Pan-STARRS |
| Discovery date | 12 June 2013 |
| Designations | |
| 2013 LX28 | |
| Orbital characteristics[2][3][4] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 1 | |
| Aphelion | 1.4543719 AU (217.57094 Gm) |
| Perihelion | 0.5488609 AU (82.10842 Gm) |
| 1.00161641 AU (149.839682 Gm) | |
| Eccentricity | 0.4520249 |
| 1.00 yr (366.14 d) | |
| 61.458811° | |
| 0° 58m 59.602s /day | |
| Inclination | 49.97420° |
| 76.679354° | |
| 345.77666° | |
| Earth MOID | 0.373137 AU (55.8205 Gm) |
| Jupiter MOID | 3.8786 AU (580.23 Gm) |
| Physical characteristics | |
| Dimensions | 130–300 m[a][5] |
| 21.7[2] | |
2013 LX28, is an asteroid, classified as near-Earth object of the Apollo group that is a temporary quasi-satellite of the Earth, the third known Earth quasi-satellite.[6][7]
Discovery, orbit and physical properties
2013 LX28 was discovered on 12 June 2013. As of September 2014, it has been observed 26 times with a data-arc span of 349 days. It is an Apollo asteroid and its semi-major axis (1.0016 AU) is very similar to that of the Earth but it has relatively high eccentricity (0.4521) and high orbital inclination (49.9761°). With an absolute magnitude of 21.7, it has a diameter in the range 130–300 m (for an assumed albedo range of 0.04–0.20).
Quasi-satellite dynamical state and orbital evolution
2013 LX28 has been identified as an Earth quasi-satellite following a kidney-shaped retrograde orbit around the Earth.[6][7]
See also
Notes
- ^ This is assuming an albedo of 0.20–0.04.
References
- ↑ "List Of Apollo Minor Planets (by designation)". Minorplanetcenter.org. Retrieved 24 December 2014.
- 1 2 3 "2013 LX28". JPL Small-Body Database. Jet Propulsion Laboratory. SPK-ID: 3643996. Retrieved 3 April 2016.
- ↑ "AstDyS". NEODyS. Retrieved 24 December 2014.
- ↑ "NEODyS". NEODyS. Retrieved 24 December 2014.
- ↑ "Glossary: Absolute Magnitude (H)". Neo.jpl.nasa.gov. Archived from the original on 2 March 2001. Retrieved 24 December 2014.
- 1 2 Connors, M. (2014). "A Kozai-resonating Earth quasi-satellite". Monthly Notices of the Royal Astronomical Society. 437 (1): L85–L89. Bibcode:2014MNRAS.437L..85C. doi:10.1093/mnrasl/slt147.
- 1 2 de la Fuente Marcos, C.; de la Fuente Marcos, R. (2014). "Asteroid 2014 OL339: yet another Earth quasi-satellite". Monthly Notices of the Royal Astronomical Society. 445 (3): 2985–2994. arXiv:1409.5588. Bibcode:2014MNRAS.445.2961D. doi:10.1093/mnras/stu1978.
- Further reading
- Understanding the Distribution of Near-Earth Asteroids Bottke, W. F., Jedicke, R., Morbidelli, A., Petit, J.-M., Gladman, B. 2000, Science, Vol. 288, Issue 5474, pp. 2190–2194.
- A Numerical Survey of Transient Co-orbitals of the Terrestrial Planets Christou, A. A. 2000, Icarus, Vol. 144, Issue 1, pp. 1–20.
- Debiased Orbital and Absolute Magnitude Distribution of the Near-Earth Objects Bottke, W. F., Morbidelli, A., Jedicke, R., Petit, J.-M., Levison, H. F., Michel, P., Metcalfe, T. S. 2002, Icarus, Vol. 156, Issue 2, pp. 399–433.
- Transient co-orbital asteroids Brasser, R., Innanen, K. A., Connors, M., Veillet, C., Wiegert, P., Mikkola, S., Chodas, P. W. 2004, Icarus, Vol. 171, Issue 1, pp. 102–109.
- A Kozai-resonating Earth quasi-satellite Connors, M. 2014, Monthly Notices of the Royal Astronomical Society, Vol. 437, Issue 1, pp. L85–L89.
- Asteroid 2014 OL339: yet another Earth quasi-satellite de la Fuente Marcos, C., de la Fuente Marcos, R. 2014, Monthly Notices of the Royal Astronomical Society, Vol. 445, Issue 3, pp. 2985–2994.
External links
- Discovery MPEC
- 2013 LX28 data at MPC
- 2013 LX28 at NeoDyS-2, Near Earth Objects—Dynamic Site
- 2013 LX28 at ESA–space situational awareness
- 2013 LX28 at the JPL Small-Body Database
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