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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05803587503316372 8.3887e-08  
a 5.215347339315317 1.886e-07 au
q 4.91267009287627 5.7073e-07 au
i 13.36419132113751 6.0999e-06 deg
node 259.524778001526 4.039e-05 deg
peri 180.7159632581941 9.2308e-05 deg
M 294.3373732644607 8.5227e-05 deg
tp 2459793.985572081790
(2022-Aug-02.48557208)
0.0010423 TDB
period 4350.340827818823
11.91
0.00023598
6.461e-07
d
yr
n .08275213695854196 4.4888e-09 deg/d
Q 5.518024585754364 1.9955e-07 au
  Orbit Determination Parameters
   # obs. used (total)      210  
   data-arc span      7211 days (19.74 yr)  
   first obs. used      2001-02-18  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49016  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 00:42:33  

Additional Information
 Earth MOID = 3.92839 au 
 Jupiter MOID = .189574 au 
 T_jup = 2.942 
[ 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 13.2   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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