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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04408587702934826 4.6939e-08  
a 5.224661899732084 1.0504e-07 au
q 4.994328097700574 2.1617e-07 au
i 14.75476271494535 4.0574e-06 deg
node 127.6577270790621 2.3353e-05 deg
peri 47.17064385862115 6.8461e-05 deg
M 96.57671238133712 6.2562e-05 deg
tp 2458226.312025974657
(2018-Apr-17.81202597)
0.00076297 TDB
period 4362.000530580611
11.94
0.00013154
3.601e-07
d
yr
n .08253093906709856 2.4888e-09 deg/d
Q 5.454995701763593 1.0967e-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 = 4.02076 au 
 Jupiter MOID = .246604 au 
 T_jup = 2.932 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457440.5 (2016-Feb-22.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04379173606780139 4.6037e-08  
q 4.982596803123441 2.1171e-07 au
tp 2458177.272253598997
(2018-Feb-27.77225360)
0.00077658 TDB
node 127.6977540655124 2.3376e-05 deg
peri 42.54772663953642 6.9584e-05 deg
i 14.75782128874139 4.0577e-06 deg
  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
 Jupiter MOID = .246604 au 
 T_jup = 2.932 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.119362567258782E-15 -8.803885068508045E-15 9.599877646840449E-12 1.796263383656765E-16 7.688057122073231E-13 9.08719480642262E-16
q -8.803885068508045E-15 4.482069301343661E-14 -5.984208126592943E-11 1.150548847342842E-14 -5.030812652039584E-12 -5.676107923537993E-16
tp 9.599877646840449E-12 -5.984208126592943E-11 6.030822409759945E-7 -7.158993351513662E-11 5.102253988163106E-8 -9.395779958124863E-12
node 1.796263383656765E-16 1.150548847342842E-14 -7.158993351513662E-11 5.464472868234418E-10 -5.34455289098304E-10 -1.679147925554591E-11
peri 7.688057122073231E-13 -5.030812652039584E-12 5.102253988163106E-8 -5.34455289098304E-10 4.841980176313986E-9 1.535135356672244E-11
i 9.08719480642262E-16 -5.676107923537993E-16 -9.395779958124863E-12 -1.679147925554591E-11 1.535135356672244E-11 1.64648122213723E-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 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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