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295490 (2008 RD18)
Classification: Jupiter Trojan          SPK-ID: 2295490
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 .0852673814133835 1.1007e-07  
a 5.258591401712291 2.1899e-07 au
q 4.81020508296535 7.2223e-07 au
i 7.880269929534061 9.987e-06 deg
node 212.7589106419896 0.00010368 deg
peri 181.3466898088446 0.00013549 deg
M 321.2190786307874 9.2171e-05 deg
tp 2459474.980304270292
(2021-Sep-17.48030427)
0.0011407 TDB
period 4404.560374187236
12.06
0.00027514
7.533e-07
d
yr
n .08173346927193159 5.1056e-09 deg/d
Q 5.706977720459232 2.3767e-07 au
  Orbit Determination Parameters
   # obs. used (total)      112  
   data-arc span      8787 days (24.06 yr)  
   first obs. used      1995-09-03  
   last obs. used      2019-09-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57616  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 07:00:23  

Additional Information
 Earth MOID = 3.81667 au 
 Jupiter MOID = .168393 au 
 T_jup = 2.974 
[ 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 13.6   n/a MPO258127  

295490 (2008 RD18)          Discovered 2008-Sep-04 by Spacewatch at Kitt Peak
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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