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243315 (2008 RP18)
Classification: Jupiter Trojan          SPK-ID: 2243315
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04594172004920196 8.4284e-08  
a 5.243364655279168 2.4411e-07 au
q 5.002475464170452 6.2662e-07 au
i 9.718436113561856 1.3255e-05 deg
node 336.3101182571845 3.4051e-05 deg
peri 90.99403806126381 0.00014587 deg
M 290.5022840620336 0.00014472 deg
tp 2459847.106407444035
(2022-Sep-24.60640744)
0.0017777 TDB
period 4385.443500789255
12.01
0.00030626
8.385e-07
d
yr
n .08208975897995498 5.7328e-09 deg/d
Q 5.484253846387884 2.5533e-07 au
  Orbit Determination Parameters
   # obs. used (total)      279  
   data-arc span      6718 days (18.39 yr)  
   first obs. used      2002-03-10  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41291  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 16:44:25  

Additional Information
 Earth MOID = 4.03392 au 
 Jupiter MOID = .187032 au 
 T_jup = 2.969 
[ 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 13.1   n/a MPO454785  
diameter diameter 9.731 km 1.041 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.129   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

243315 (2008 RP18)          Discovered 2008-Sep-04 by Spacewatch at Kitt Peak
Reference: 20100626/Numbers.arcLast Updated: 2010-06-28
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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