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305493 (2008 EQ40)
Classification: Main-belt Asteroid          SPK-ID: 2305493
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1591855597402561 4.9566e-08  
a 3.13115563252618 3.472e-08 au
q 2.632720870528644 1.5603e-07 au
i 8.382694401000466 7.6536e-06 deg
node 211.9779210017393 3.716e-05 deg
peri 277.3814911292054 4.7671e-05 deg
M 114.9706823840533 2.6619e-05 deg
tp 2458354.191277791581
(2018-Aug-23.69127779)
0.00014766 TDB
period 2023.743228885131
5.54
3.3661e-05
9.216e-08
d
yr
n .1778881801118228 2.9588e-09 deg/d
Q 3.629590394523715 4.0247e-08 au
  Orbit Determination Parameters
   # obs. used (total)      184  
   data-arc span      7228 days (19.79 yr)  
   first obs. used      2000-10-07  
   last obs. used      2020-07-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56643  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:11:47  

Additional Information
 Earth MOID = 1.66392 au 
 Jupiter MOID = 1.55719 au 
 T_jup = 3.177 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457176.5 (2015-Jun-03.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .160530953585493 4.9726e-08  
q 2.626600377905831 1.5714e-07 au
tp 2456330.146135450910
(2013-Feb-06.64613545)
0.00014504 TDB
node 212.0253548392447 3.7141e-05 deg
peri 276.818059817928 4.7443e-05 deg
i 8.387142206036506 7.6579e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      184  
   data-arc span      7228 days (19.79 yr)  
   first obs. used      2000-10-07  
   last obs. used      2020-07-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56643  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:11:47  

Additional Information
 Jupiter MOID = 1.55719 au 
 T_jup = 3.177 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.472708080140632E-15 -7.672242793204494E-15 -1.21899232222643E-12 -2.898146298820895E-15 -3.189834012873189E-13 -5.508195681813575E-15
q -7.672242793204494E-15 2.46920944116647E-14 3.402254125136742E-12 2.183464722509066E-15 1.003853138260424E-12 1.754278612361704E-14
tp -1.21899232222643E-12 3.402254125136742E-12 2.103692457407265E-8 3.251297170361733E-12 4.276840668637939E-9 1.037355258619345E-12
node -2.898146298820895E-15 2.183464722509066E-15 3.251297170361733E-12 1.379471852486253E-9 -1.364641889823885E-9 1.198716833085882E-11
peri -3.189834012873189E-13 1.003853138260424E-12 4.276840668637939E-9 -1.364641889823885E-9 2.250813628966936E-9 -1.146241459175338E-11
i -5.508195681813575E-15 1.754278612361704E-14 1.037355258619345E-12 1.198716833085882E-11 -1.146241459175338E-11 5.864347182585907E-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 15.9   n/a MPO433969  

305493 (2008 EQ40)          Discovered 2008-Mar-04 by Spacewatch at Kitt Peak
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

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