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312633 (2009 WE5)
Classification: Jupiter Trojan          SPK-ID: 2312633
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05834165612657094 8.3823e-08  
a 5.217112815103882 1.8596e-07 au
q 4.912737813271566 5.6851e-07 au
i 13.3635305915052 6.0359e-06 deg
node 259.5303951874921 3.9626e-05 deg
peri 180.5213588150605 9.0353e-05 deg
M 311.0924867419428 8.3202e-05 deg
tp 2459791.812213596817
(2022-Jul-31.31221360)
0.0010144 TDB
period 4352.550001298314
11.92
0.00023272
6.372e-07
d
yr
n .08271013541317533 4.4223e-09 deg/d
Q 5.521487816936199 1.9681e-07 au
  Orbit Determination Parameters
   # obs. used (total)      218  
   data-arc span      7262 days (19.88 yr)  
   first obs. used      2001-02-18  
   last obs. used      2021-01-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48708  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 06:30:43  

Additional Information
 Earth MOID = 3.92804 au 
 Jupiter MOID = .188724 au 
 T_jup = 2.942 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458152.5 (2018-Feb-03.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05763254648860197 8.3055e-08  
q 4.909832974086885 5.6369e-07 au
tp 2459805.713564616991
(2022-Aug-14.21356462)
0.0010376 TDB
node 259.5303328655017 3.964e-05 deg
peri 181.7540689689304 9.2111e-05 deg
i 13.36546531394757 6.0366e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      218  
   data-arc span      7262 days (19.88 yr)  
   first obs. used      2001-02-18  
   last obs. used      2021-01-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48708  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 06:30:43  

Additional Information
 Jupiter MOID = .188724 au 
 T_jup = 2.942 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.89814179993752E-15 -4.553237550843001E-14 -4.10460334393806E-11 -2.745939762955924E-14 -2.629317220441578E-12 -1.01535321016959E-14
q -4.553237550843001E-14 3.177491005274993E-13 2.659866233642599E-10 1.890883710177721E-13 1.619666921362273E-11 7.315529031872881E-14
tp -4.10460334393806E-11 2.659866233642599E-10 1.076597991533562E-6 9.008169870008489E-11 8.597365870549275E-8 1.639738947622855E-10
node -2.745939762955924E-14 1.890883710177721E-13 9.008169870008489E-11 1.571330695073198E-9 -1.524563153281876E-9 -1.013057701540511E-10
peri -2.629317220441578E-12 1.619666921362273E-11 8.597365870549275E-8 -1.524563153281876E-9 8.484409709036945E-9 1.109395899095622E-10
i -1.01535321016959E-14 7.315529031872881E-14 1.639738947622855E-10 -1.013057701540511E-10 1.109395899095622E-10 3.644092414038042E-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 13.2   n/a MPO494657  
diameter diameter 12.028 km 1.149 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.064   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

312633 (2009 WE5)          Discovered 2009-Nov-16 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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