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312633 (2009 WE5)
Classification: Jupiter Trojan          SPK-ID: 2312633
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0583416561864642 8.3823e-08  
a 5.217112815594749 1.8596e-07 au
q 4.912737813421324 5.6851e-07 au
i 13.363530591684 6.0359e-06 deg
node 259.5303951663337 3.9626e-05 deg
peri 180.5213587437459 9.0353e-05 deg
M 311.0924868430237 8.3202e-05 deg
tp 2459791.812212458160
(2022-Jul-31.31221246)
0.0010144 TDB
period 4352.550001912597
11.92
0.00023272
6.372e-07
d
yr
n .08271013540150232 4.4223e-09 deg/d
Q 5.521487817768175 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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48708  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 15:21:01  

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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05763254671792469 8.3055e-08  
q 4.909832971013424 5.6369e-07 au
tp 2459805.713566646248
(2022-Aug-14.21356665)
0.0010376 TDB
node 259.5303328523952 3.964e-05 deg
peri 181.754069236232 9.2111e-05 deg
i 13.36546531581243 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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48708  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 15:21:01  

Additional Information
 Jupiter MOID = .188724 au 
 T_jup = 2.942 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.89814167764194E-15 -4.553237478786838E-14 -4.104603535365773E-11 -2.745939720365871E-14 -2.629317396382878E-12 -1.015353232222842E-14
q -4.553237478786838E-14 3.177490977218122E-13 2.659866436544326E-10 1.890883672735735E-13 1.619667098098332E-11 7.315529342276539E-14
tp -4.104603535365773E-11 2.659866436544326E-10 1.076597971295509E-6 9.008170050624725E-11 8.59736565235441E-8 1.639738973173959E-10
node -2.745939720365871E-14 1.890883672735735E-13 9.008170050624725E-11 1.571330691645583E-9 -1.524563149681862E-9 -1.01305769922191E-10
peri -2.629317396382878E-12 1.619667098098332E-11 8.59736565235441E-8 -1.524563149681862E-9 8.484409480450226E-9 1.109395898274168E-10
i -1.015353232222842E-14 7.315529342276539E-14 1.639738973173959E-10 -1.01305769922191E-10 1.109395898274168E-10 3.644092399616E-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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