2008 CK70

2008 CK70
Discovery[1]
Discovered byLINEAR (704)
Discovery date9 February 2008
Designations
2008 CK70
Apollo NEO,[2]
Orbital characteristics[2]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 5
Observation arc35 days
Earliest precovery date10 January 2008
Aphelion1.6207 AU (242.45 Gm) (Q)
Perihelion0.58524 AU (87.551 Gm) (q)
1.1030 AU (165.01 Gm) (a)
Eccentricity0.46940 (e)
1.16 yr (423.10 d)
246.51° (M)
0° 51m 3.096s /day (n)
Inclination6.0752° (i)
145.76° (Ω)
105.87° (ω)
Earth MOID0.000207059 AU (30,975.6 km)
Physical characteristics
Dimensions~31 meters (102 ft)[3]
Mass4.0×107 kg (assumed)[3]
24.9[2]

2008 CK70 (also written 2008 CK70) is an Apollo near-Earth asteroid.[2] In 2013 it had the 7th highest impact threat on the Palermo Technical Impact Hazard Scale.[4] It was discovered on 9 February 2008 by Lincoln Near-Earth Asteroid Research (LINEAR) at an apparent magnitude of 19 using a 1.0-meter (39 in) reflecting telescope.[1] It has an estimated diameter of 31 meters (102 ft)[3] and is not large enough to qualify as a potentially hazardous object. Ten precovery images from January 2008 have been located.[5] It was removed from the Sentry Risk Table on 21 December 2013.[6] It may be possible to recover the asteroid in late September 2017, but it will have an apparent magnitude of about 22.[7]

It has an observation arc of 35 days with an uncertainty parameter of 6.[2] Perturbations by Earth and Venus will increase the orbital uncertainty over time.[8] When the asteroid only had an observation arc of 5 days, virtual clones of the asteroid that fit the uncertainty region in the known trajectory showed a 1 in 2,700 chance that the asteroid could impact Earth on 14 February 2030.[3] With a 2030 Palermo Technical Scale of −2.94,[3] the odds of impact by 2008 CK70 in 2030 were about 870 times less[9] than the background hazard level of Earth impacts which is defined as the average risk posed by objects of the same size or larger over the years until the date of the potential impact.[10] The power of such an air burst would be somewhere between the Chelyabinsk meteor and the Tunguska event depending on the actual size of the asteroid. Using the nominal orbit, JPL Horizons shows that the asteroid will be 0.08 AU (12,000,000 km; 7,400,000 mi) from Earth on 14 February 2030.[11] On 19 May 2031, the asteroid may pass as close as 0.0088 AU (1,320,000 km; 820,000 mi) from Venus.[8]

  1. ^ a b Cite error: The named reference MPEC2008-C69 was invoked but never defined (see the help page).
  2. ^ a b c d e Cite error: The named reference jpldata was invoked but never defined (see the help page).
  3. ^ a b c d e Cite error: The named reference summary was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference risk-table was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference MPC was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference removed was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference NEODyS2017 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference jpl-close was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference math was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference palermo was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Horizons was invoked but never defined (see the help page).