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127534 (2002 WR17)
Classification: Jupiter Trojan          SPK-ID: 2127534
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04449978457609427 4.6849e-08  
a 5.222187264254829 1.0577e-07 au
q 4.989801055979466 2.1652e-07 au
i 14.7550236942138 4.0578e-06 deg
node 127.6570088535874 2.3358e-05 deg
peri 46.54874865791782 6.7806e-05 deg
M 80.97172214266537 6.1967e-05 deg
tp 2458220.089476609196
(2018-Apr-11.58947661)
0.00075467 TDB
period 4358.901837345452
11.93
0.00013242
3.625e-07
d
yr
n .08258960936345336 2.5091e-09 deg/d
Q 5.454573472530193 1.1047e-07 au
  Orbit Determination Parameters
   # obs. used (total)      722  
   data-arc span      6876 days (18.83 yr)  
   first obs. used      2001-10-22  
   last obs. used      2020-08-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48901  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:38:16  

Additional Information
 Earth MOID = 4.01491 au 
 Jupiter MOID = .252447 au 
 T_jup = 2.932 
[ 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 12.37   n/a E2021B55  
diameter diameter 17.877 km 1.460 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.073   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

127534 (2002 WR17)          Discovered 2002-Nov-30 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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