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JPL Small-Body Database Browser
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117423 (2005 AP18)
Classification: Jupiter Trojan          SPK-ID: 2117423
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0970449779520368 7.2596e-08  
a 5.247205250389677 1.1043e-07 au
q 4.737990332555799 4.2137e-07 au
i 9.072713537888442 6.9392e-06 deg
node 140.7116815275479 4.2802e-05 deg
peri 87.51581561361272 5.5673e-05 deg
M 331.3802460145525 3.7528e-05 deg
tp 2458949.522882582724
(2020-Apr-10.02288258)
0.00045994 TDB
period 4390.262676390227
12.02
0.0001386
3.795e-07
d
yr
n .08199964934581092 2.5887e-09 deg/d
Q 5.756420168223555 1.2115e-07 au
  Orbit Determination Parameters
   # obs. used (total)      687  
   data-arc span      8415 days (23.04 yr)  
   first obs. used      1996-04-24  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57556  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:54:47  

Additional Information
 Earth MOID = 3.74416 au 
 Jupiter MOID = .176483 au 
 T_jup = 2.966 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.1   n/a MPO280567  
diameter diameter 16.849 km 1.765 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.090   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

117423 (2005 AP18)          Discovered 2005-Jan-07 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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