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

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05283317543350822 8.8336e-08  
a 5.257947936079646 2.3059e-07 au
q 4.980153850352498 6.367e-07 au
i 3.728945529366487 7.9592e-06 deg
node 229.1491813764419 0.0001448 deg
peri 195.3438474963911 0.00017496 deg
M 332.3802857244827 0.00010146 deg
tp 2459734.362140957503
(2022-Jun-03.86214096)
0.0012489 TDB
period 4403.751955266139
12.06
0.0002897
7.932e-07
d
yr
n .08174847349644687 5.3777e-09 deg/d
Q 5.535742021806795 2.4278e-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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .63503  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 06:30:02  

Additional Information
 Earth MOID = 3.99334 au 
 Jupiter MOID = .0474038 au 
 T_jup = 2.993 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457675.5 (2016-Oct-14.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05156426338563612 8.7669e-08  
q 4.980669129093844 6.3197e-07 au
tp 2459746.827698349602
(2022-Jun-16.32769835)
0.0012886 TDB
node 229.156315597964 0.00014474 deg
peri 196.3352357518776 0.00017683 deg
i 3.730580981116296 7.9635e-06 deg
  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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .63503  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 06:30:02  

Additional Information
 Jupiter MOID = .0474038 au 
 T_jup = 2.993 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.685814974256511E-15 -5.365870398706451E-14 -5.03951408867136E-11 -2.880139808301289E-14 -3.249469338755754E-12 -2.605356653400565E-15
q -5.365870398706451E-14 3.99391408045907E-13 3.652336012314528E-10 2.072098104561201E-13 2.251777944321195E-11 2.255192251635412E-14
tp -5.03951408867136E-11 3.652336012314528E-10 1.660474575622652E-6 2.534075091468747E-10 1.303340784293348E-7 3.906194696479307E-11
node -2.880139808301289E-14 2.072098104561201E-13 2.534075091468747E-10 2.095010843630754E-8 -2.08880469858201E-8 -4.919061558029732E-10
peri -3.249469338755754E-12 2.251777944321195E-11 1.303340784293348E-7 -2.08880469858201E-8 3.126733141094454E-8 4.935632921956507E-10
i -2.605356653400565E-15 2.255192251635412E-14 3.906194696479307E-11 -4.919061558029732E-10 4.935632921956507E-10 6.341691854613242E-11

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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