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213739 (2002 WR6)
Classification: Main-belt Asteroid          SPK-ID: 2213739
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01738807921327703 4.369e-08  
a 2.871400444190481 3.1125e-08 au
q 2.821472305813858 1.327e-07 au
i 6.794018285275832 7.1268e-06 deg
node 33.07594677839437 5.17e-05 deg
peri 224.6636106880086 0.0002575 deg
M 96.37808092709159 0.00024928 deg
tp 2458920.710508964898
(2020-Mar-12.21050896)
0.001233 TDB
period 1777.21132362254
4.87
2.8897e-05
7.912e-08
d
yr
n .2025645432340606 3.2936e-09 deg/d
Q 2.921328582567104 3.1667e-08 au
  Orbit Determination Parameters
   # obs. used (total)      255  
   data-arc span      6877 days (18.83 yr)  
   first obs. used      2001-08-23  
   last obs. used      2020-06-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60922  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:43:53  

Additional Information
 Earth MOID = 1.81197 au 
 Jupiter MOID = 2.05648 au 
 T_jup = 3.287 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456946.5 (2014-Oct-16.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01455684052946933 4.3977e-08  
q 2.82879837290361 1.3443e-07 au
tp 2457173.256171009750
(2015-May-30.75617101)
0.0014766 TDB
node 33.28132454540919 5.1658e-05 deg
peri 230.7371561593536 0.00030407 deg
i 6.797712401679931 7.1224e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      255  
   data-arc span      6877 days (18.83 yr)  
   first obs. used      2001-08-23  
   last obs. used      2020-06-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60922  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:43:53  

Additional Information
 Jupiter MOID = 2.05648 au 
 T_jup = 3.287 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.933933442350107E-15 -5.767319757926088E-15 2.727218921050551E-12 5.261321064748825E-16 5.833197038922128E-13 -2.015104427715985E-16
q -5.767319757926088E-15 1.807195797409386E-14 -2.322755185520378E-11 -9.672692823308337E-15 -4.822652867936634E-12 2.80828953890191E-15
tp 2.727218921050551E-12 -2.322755185520378E-11 2.180340990411071E-6 4.257874706516192E-10 4.425001868379111E-7 -7.853717380524476E-11
node 5.261321064748825E-16 -9.672692823308337E-15 4.257874706516192E-10 2.668587744307208E-9 -2.563321949916114E-9 -1.564677881395253E-10
peri 5.833197038922128E-13 -4.822652867936634E-12 4.425001868379111E-7 -2.563321949916114E-9 9.245589831565926E-8 1.394895049944644E-10
i -2.015104427715985E-16 2.80828953890191E-15 -7.853717380524476E-11 -1.564677881395253E-10 1.394895049944644E-10 5.07286730761347E-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 15.57   n/a E2021B55  

213739 (2002 WR6)          Discovered 2002-Nov-24 by NEAT at Palomar
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11

Alternate Designations
 2002 WR6 = 2001 QG285 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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