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146954 (2002 EQ90)
Classification: Main-belt Asteroid          SPK-ID: 2146954
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1225846571082233 4.7484e-08  
a 3.195934638460895 2.5215e-08 au
q 2.804162086664872 1.4745e-07 au
i 2.137148999329944 4.7918e-06 deg
node 61.75879325438022 0.00012212 deg
peri 155.2243159423476 0.00012353 deg
M 28.33322188117291 1.8324e-05 deg
tp 2458836.256299292151
(2019-Dec-18.75629929)
0.0001061 TDB
period 2086.869347326693
5.71
2.4698e-05
6.762e-08
d
yr
n .1725072058110225 2.0416e-09 deg/d
Q 3.587707190256917 2.8306e-08 au
  Orbit Determination Parameters
   # obs. used (total)      519  
   data-arc span      6736 days (18.44 yr)  
   first obs. used      2002-02-10  
   last obs. used      2020-07-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57283  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 14:22:18  

Additional Information
 Earth MOID = 1.79711 au 
 Jupiter MOID = 1.38088 au 
 T_jup = 3.183 
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Orbital Elements at Epoch 2456863.5 (2014-Jul-25.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1214199209992181 4.7607e-08  
q 2.807616196266742 1.4756e-07 au
tp 2456745.111025567114
(2014-Mar-28.61102557)
0.00010832 TDB
node 61.77702590750917 0.00012207 deg
peri 154.5007783836494 0.0001235 deg
i 2.137843635975063 4.7918e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      519  
   data-arc span      6736 days (18.44 yr)  
   first obs. used      2002-02-10  
   last obs. used      2020-07-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57283  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 14:22:18  

Additional Information
 Jupiter MOID = 1.38088 au 
 T_jup = 3.183 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.266422882264883E-15 -6.948348327446788E-15 1.800488385707185E-13 -1.964195460725608E-15 -3.082876005606048E-14 1.672088739886081E-17
q -6.948348327446788E-15 2.177307419052174E-14 -9.556449886153743E-13 4.115386113366394E-15 3.370294076253534E-14 3.054573005165414E-16
tp 1.800488385707185E-13 -9.556449886153743E-13 1.173215620124243E-8 1.070613531327823E-11 2.057245167958344E-9 -2.219525618908519E-12
node -1.964195460725608E-15 4.115386113366394E-15 1.070613531327823E-11 1.490030633995772E-8 -1.488771351689403E-8 2.477706714613268E-11
peri -3.082876005606048E-14 3.370294076253534E-14 2.057245167958344E-9 -1.488771351689403E-8 1.525279332181735E-8 -2.513730706793743E-11
i 1.672088739886081E-17 3.054573005165414E-16 -2.219525618908519E-12 2.477706714613268E-11 -2.513730706793743E-11 2.296145945345368E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.0   n/a MPO432924  
diameter diameter 5.640 km 0.533 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.061   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

146954 (2002 EQ90)          Discovered 2002-Mar-12 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

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