2012 FC71

From Wikipedia, the free encyclopedia
Jump to: navigation, search
2012 FC71
Discovery [1]
Discovered by Mt. Lemmon Survey
A. Boattini
(unofficial credits)
Discovery date 31 March 2012
Designations
MPC designation 2012 FC71
NEO · Aten[1][2]
Earth crosser
Orbital characteristics[2]
Epoch 16 February 2017 (JD 2457800.5)
Uncertainty parameter : 5 [2] · 7 [1]
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]

2012 FC71, also written 2012 FC71, is a small asteroid trapped in a Kozai resonance with the Earth.[4]

Discovery, orbit and physical properties[edit]

It was first observed on March 31, 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 May 11, 2013 its orbit is based on 35 observations spanning a data-arc of 21 days.

Kozai resonator and future orbital evolution[edit]

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 April 18, 2012 at 0.076 AU and it had next one on about May 17, 2013 at 0.0581 AU.

Origin[edit]

It may have been originated within the Venus-Earth-Mars region or in the main asteroid belt like other Near-Earth Objects, then transition to Amor-class asteroid before entering Earth's co-orbital region.[4]

See also[edit]

Notes[edit]

  • ^ This is assuming an albedo of 0.20–0.04.

References[edit]

  1. ^ a b c "2012 FC71". Minor Planet Center. Retrieved 2 February 2017. 
  2. ^ a b c d "JPL Small-Body Database Browser: 2012 FC71" (2012-04-21 last obs.). Jet Propulsion Laboratory. Retrieved 2 February 2017. 
  3. ^ "Absolute Magnitude (H)". NASA/JPL. Retrieved 2 February 2017. 
  4. ^ a b c 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. Bibcode:2013MNRAS.434L...1D. arXiv:1305.2825Freely accessible. doi:10.1093/mnrasl/slt062. 
  5. ^ Discovery MPEC
  6. ^ a b MPC data on 2012 FC71
Further reading

External links[edit]