2012 FC71
2012 FC71, also written 2012 FC71, is a small asteroid trapped in a Kozai resonance with the Earth.[4]
| Discovery [1] | |
|---|---|
| Discovered by | Mt. Lemmon Survey A. Boattini (unofficial credits) |
| Discovery date | 31 March 2012 |
| Designations | |
| 2012 FC71 | |
| Orbital characteristics [2] | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter | |
| Observation arc | 21 days |
| Aphelion | 1.0750 AU |
| Perihelion | 0.9008 AU |
| 0.9879 AU | |
| Eccentricity | 0.0882 |
| 0.98 yr (359 days) | |
| 150.11° | |
| 1° 0m 13.68s / day | |
| Inclination | 4.9430° |
| 38.142° | |
| 348.30° | |
| Earth MOID | 0.0566 AU (22.1 LD) |
| Physical characteristics | |
| Dimensions | 20–40 m[a][3] |
| 25.2[2] | |
Discovery, orbit and physical properties
It was first observed on 31 March 2012 by Andrea Boattini, observing for the Mt. Lemmon Survey.[5][6] Its orbit is characterized by low eccentricity (0.088), low inclination (4.97º) and a semi-major axis of 0.9895 AU.[6] It is an Aten asteroid but also an Earth crosser. As of 11 May 2013 its orbit is based on 35 observations spanning a data-arc of 21 days.
Kozai resonator and future orbital evolution
2012 FC71 is locked in a Kozai resonance and as such it has a very slow orbital evolution and it will remain relatively unperturbed for hundreds of thousands of years.[4] It had a close encounter with the Earth on 18 April 2012 at 0.076 AU and another on 17 May 2013 at 0.0581 AU.
Origin
It may have been originated within the Venus-Earth-Mars region or in the main asteroid belt like other Near-Earth Objects, then transitioned to an Amor-class asteroid before entering Earth's co-orbital region.[4]
See also
- 3753 Cruithne
- 2001 GO2
- 2002 AA29
- 2003 YN107
- 2006 JY26
- 2010 SO16
- 2013 BS45
Notes
- ^ This is assuming an albedo of 0.20–0.04.
References
- "2012 FC71". Minor Planet Center. Retrieved 2 February 2017.
- "JPL Small-Body Database Browser: 2012 FC71" (2012-04-21 last obs.). Jet Propulsion Laboratory. Retrieved 2 February 2017.
- "Absolute Magnitude (H)". NASA/JPL. Retrieved 2 February 2017.
- de la Fuente Marcos, C.; de la Fuente Marcos, R. (July 2013). "A resonant family of dynamically cold small bodies in the near-Earth asteroid belt". Monthly Notices of the Royal Astronomical Society: Letters. 434 (1): L1–L5. arXiv:1305.2825. Bibcode:2013MNRAS.434L...1D. doi:10.1093/mnrasl/slt062.
- Discovery MPEC
- MPC data on 2012 FC71
- Further reading
- Secular perturbations of asteroids with high inclination and eccentricity Kozai, Y. 1962, Astronomical Journal, Vol. 67, p. 591
- The Kozai resonance for near-Earth asteroids with semimajor axes smaller than 2AU Michel, P., & Thomas, F. 1996, Astronomy and Astrophysics, Vol. 307, p. 310
- A resonant family of dynamically cold small bodies in the near-Earth asteroid belt de la Fuente Marcos, C., de la Fuente Marcos, R. 2013, Monthly Notices of the Royal Astronomical Society: Letters, Vol. 434, Issue 1, pp. L1-L5
External links
- List Of Aten Minor Planets, Minor Planet Center
- MPEC 2012-G13 : 2012 FC71, discovery Minor Planet Electronic Circular (MPEC)
- AstDys-2 on 2012 FC71 at AstDys
- NEODyS-2 on 2012 FC71 at NEODyS
- 2012 FC71 at NeoDyS-2, Near Earth Objects—Dynamic Site
- Ephemeris · Obs prediction · Orbital info · MOID · Proper elements · Obs info · Close · Physical info · NEOCC
- 2012 FC71 at the JPL Small-Body Database
