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442535 (2011 WA138)
Classification: Main-belt Asteroid          SPK-ID: 2442535
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03635921310356962 7.6648e-08  
a 2.755182321410915 3.6314e-08 au
q 2.655006060247548 2.2627e-07 au
i 3.173403737048583 7.6088e-06 deg
node 345.2851379265647 0.00011233 deg
peri 152.1271852322672 0.00017125 deg
M 229.2371822281425 0.00013508 deg
tp 2459607.244308696212
(2022-Jan-27.74430870)
0.00063397 TDB
period 1670.4133090167
4.57
3.3025e-05
9.042e-08
d
yr
n .2155155242458625 4.2608e-09 deg/d
Q 2.855358582574282 3.7634e-08 au
  Orbit Determination Parameters
   # obs. used (total)      108  
   data-arc span      6088 days (16.67 yr)  
   first obs. used      2004-03-15  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57411  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:27:30  

Additional Information
 Earth MOID = 1.66849 au 
 Jupiter MOID = 2.13537 au 
 T_jup = 3.341 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457981.5 (2017-Aug-16.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03406375691151099 7.6532e-08  
q 2.6620374392635 2.2536e-07 au
tp 2457933.144544896261
(2017-Jun-28.64454490)
0.00065378 TDB
node 345.4651571147176 0.00011221 deg
peri 151.4359600483497 0.00017762 deg
i 3.175127732295089 7.6125e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      108  
   data-arc span      6088 days (16.67 yr)  
   first obs. used      2004-03-15  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57411  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:27:30  

Additional Information
 Jupiter MOID = 2.13537 au 
 T_jup = 3.341 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.857213074461941E-15 -1.706598573875556E-14 -1.172187875599539E-11 5.233559775070782E-14 -2.264598413752056E-12 3.996247058340498E-15
q -1.706598573875556E-14 5.078756357810034E-14 4.509297266976065E-11 -1.659315862937852E-13 8.915448261812951E-12 -9.51211781972898E-15
tp -1.172187875599539E-11 4.509297266976065E-11 4.274315958894439E-7 -5.578040448072336E-10 9.004103990327203E-8 3.308391288146724E-11
node 5.233559775070782E-14 -1.659315862937852E-13 -5.578040448072336E-10 1.259031748737744E-8 -1.268535539783722E-8 8.273834852338245E-11
peri -2.264598413752056E-12 8.915448261812951E-12 9.004103990327203E-8 -1.268535539783722E-8 3.154773606562348E-8 -7.548217957401098E-11
i 3.996247058340498E-15 -9.51211781972898E-15 3.308391288146724E-11 8.273834852338245E-11 -7.548217957401098E-11 5.79503628495909E-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 17.3   n/a MPO477090  

442535 (2011 WA138)          Discovered 2007-Dec-17 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

Alternate Designations
 2011 WA138 = 2013 CV134 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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