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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04544584517816005 8.5173e-08  
a 5.242841389942494 2.769e-07 au
q 5.004576031841517 6.5298e-07 au
i 9.718731363843249 1.4691e-05 deg
node 336.310392223934 3.9153e-05 deg
peri 91.07731575533283 0.00018592 deg
M 257.5230429120687 0.00018752 deg
tp 2459848.665649426785
(2022-Sep-26.16564943)
0.0023297 TDB
period 4384.787044448267
12.00
0.00034737
9.51e-07
d
yr
n .08210204882260101 6.5042e-09 deg/d
Q 5.48110674804347 2.8948e-07 au
  Orbit Determination Parameters
   # obs. used (total)      264  
   data-arc span      6389 days (17.49 yr)  
   first obs. used      2002-03-10  
   last obs. used      2019-09-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41306  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:15:43  

Additional Information
 Earth MOID = 4.03576 au 
 Jupiter MOID = .183862 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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