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312458 (2008 QS42)
Classification: Jupiter Trojan          SPK-ID: 2312458
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05223602154941979 8.8408e-08  
a 5.255686593038461 2.3114e-07 au
q 4.981150434907508 6.372e-07 au
i 3.729644354138765 7.9611e-06 deg
node 229.1420821739216 0.00014477 deg
peri 195.3205746876419 0.00017553 deg
M 299.9764285152942 0.00010181 deg
tp 2459734.273373304091
(2022-Jun-03.77337330)		 0.001261 TDB
period 4400.911306265427
12.05		 0.00029032
7.949e-07		 d
yr
n .08180123954951792 5.3962e-09 deg/d
Q 5.530222751169414 2.4321e-07 au
   Orbit Determination Parameters
   # obs. used (total)      143  
   data-arc span      4436 days (12.15 yr)  
   first obs. used      2008-08-24  
   last obs. used      2020-10-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63503  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 18:47:22  

Additional Information
 Earth MOID = 3.99466 au 
 Jupiter MOID = .0485334 au 
 T_jup = 2.993 
[ 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 13.9   n/a MPO418615  

312458 (2008 QS42)          Discovered 2008-Aug-24 by Spacewatch at Kitt Peak
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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