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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09738141258629696 5.8212e-08  
a 5.24855315678087 9.0496e-08 au
q 4.737441636339281 3.1215e-07 au
i 9.072567336505232 4.3387e-06 deg
node 140.7077563705922 4.1194e-05 deg
peri 87.82006739918145 4.9997e-05 deg
M 3.935297946628202 2.5307e-05 deg
tp 2458952.489863014516
(2020-Apr-12.98986301)
0.00030919 TDB
period 4391.954446443636
12.02
0.00011359
3.11e-07
d
yr
n .08196806328251156 2.1199e-09 deg/d
Q 5.75966467722246 9.9308e-08 au
  Orbit Determination Parameters
   # obs. used (total)      852  
   data-arc span      8821 days (24.15 yr)  
   first obs. used      1996-04-24  
   last obs. used      2020-06-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54443  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 01:50:10  

Additional Information
 Earth MOID = 3.74351 au 
 Jupiter MOID = .17618 au 
 T_jup = 2.965 
[ 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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