(163132) 2002 CU11

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(163132) 2002 CU11
Discovery[1]
Discovered by LINEAR
Discovery date 7 February 2002
Designations
MPC designation (163132) 2002 CU11
NEO · PHA · Apollo[2]
Orbital characteristics[2]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 4600 days (12.59 yr)
Aphelion 1.5795 AU (236.29 Gm)
Perihelion 0.85959 AU (128.593 Gm)
1.2196 AU (182.45 Gm)
Eccentricity 0.29517
1.35 yr (491.94 d)
47.609°
0° 43m 54.48s / day (n)
Inclination 48.782°
157.77°
110.54°
Earth MOID 0.00189035 AU (282,792 km)
Physical characteristics
Mean diameter
0.460±0.017 km[2]
0.730 km[3]
Mass 5.3×1011 kg (assumed)
0.408±0.061[2]
18.5[2]

(163132) 2002 CU11, provisional designation 2002 CU11, is a bright, sub-kilometer asteroid, classified as near-Earth object and potentially hazardous asteroid of the Apollo group.[2]

Description[edit]

2002 CU11 was discovered on 7 February 2002 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 730 meters (2,400 ft).[3] The asteroid was listed on Sentry Risk Table with a Torino Scale rating of 1 on 20 March 2002.[3]

With an observation arc of 44 days, (163132) 2002 CU11 showed a 1 in 9,300 chance of impacting Earth in 2049.[4] It was removed from the Sentry Risk Table on 26 April 2002.[5] It is now known that on 3 September 2049 the asteroid will be 0.0843 AU (12,610,000 km; 7,840,000 mi) from Earth.[6]

Even though using an epoch of 27 June 2015 gives 2002 CU11 an Earth-MOID of 0.0000093 AU (1,390 km; 860 mi),[2] the asteroid does not make any threatening approaches to Earth in the foreseeable future.

Notable close-approaches to Earth[6]
Date Distance from Earth
1925-08-30 0.0023 AU (340,000 km; 210,000 mi)
2014-08-30 0.0346 AU (5,180,000 km; 3,220,000 mi)
2049-09-03 0.0843 AU (12,610,000 km; 7,840,000 mi)
2080-08-31 0.0042 AU (630,000 km; 390,000 mi)

References[edit]

  1. ^ a b "MPEC 2002-C44 : 2002 CU11". IAU Minor Planet Center. 2002-02-08. Retrieved 2013-09-18.  (K02C11U)
  2. ^ a b c d e f g "JPL Small-Body Database Browser: 163132 (2002 CU11)" (2010-08-11 last obs and observation arc=8.5 years). Jet Propulsion Laboratory. Archived from the original on 10 January 2016. Retrieved 7 April 2016. 
  3. ^ a b c "Current Impact Risks (2002 CU11)". Near-Earth Object Program. NASA. 2002-03-21. Archived from the original on March 21, 2002. 
  4. ^ Andrea Milani; Giovanni Valsecchi & Maria Eugenia Sansaturio (2002). "The problem with 2002 CU11". Spaceguard / Tumbling Stone. Retrieved 2013-09-18. 
  5. ^ "Date/Time Removed". NASA/JPL Near-Earth Object Program Office. Retrieved 2013-09-18. 
  6. ^ a b "JPL Close-Approach Data: 163132 (2002 CU11)" (2010-08-11 last obs and observation arc=8.5 years). Retrieved 2013-09-18. 
  7. ^ a b Marchis, F.; et al. "Multiple asteroid systems: Dimensions and thermal properties from Spitzer Space Telescope and ground-based observations". Icarus. 221 (2): 1130–1161. Retrieved 24 August 2018. 

External links[edit]

Preceded by
(152680) 1998 KJ9
Large NEO Earth close approach
(inside the orbit of the Moon)

30 August 1925
Succeeded by
2002 JE9