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JPL Small-Body Database Browser
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(2012 EM8)
Classification: Amor [NEO]          SPK-ID: 3601300
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | 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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2443189860441876 1.531e-08  
a 1.371286805984507 1.2915e-09 au
q 1.036255403970599 2.0193e-08 au
i 3.90834845833731 2.5156e-06 deg
node 183.22844526 1.595e-05 deg
peri 16.02620769316525 1.9425e-05 deg
M 30.44156673762581 7.9176e-06 deg
tp 2458950.903004013093
(2020-Apr-11.40300401)
1.2886e-05 TDB
period 586.5308677827567
1.61
8.2861e-07
2.269e-09
d
yr
n .6137784382276352 8.6711e-10 deg/d
Q 1.706318207998414 1.607e-09 au
  Orbit Determination Parameters
   # obs. used (total)      126  
   data-arc span      2998 days (8.21 yr)  
   first obs. used      2012-03-14  
   last obs. used      2020-05-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50128  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-30 06:43:51  

Additional Information
 Earth MOID = .0388951 au 
 Jupiter MOID = 3.2494 au 
 T_jup = 4.788 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458557.5 (2019-Mar-15.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2433789138290407 1.4778e-08  
q 1.036014165766785 2.0284e-08 au
tp 2458365.503071303987
(2018-Sep-04.00307130)
1.2786e-05 TDB
node 183.39506162905 1.5913e-05 deg
peri 15.70517216320139 1.9367e-05 deg
i 3.921708414710958 2.5087e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      126  
   data-arc span      2998 days (8.21 yr)  
   first obs. used      2012-03-14  
   last obs. used      2020-05-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50128  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-30 06:43:51  

Additional Information
 Jupiter MOID = 3.2494 au 
 T_jup = 4.788 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.183975831094808E-16 -2.996795935575497E-16 2.998763259843819E-14 4.355860924660672E-14 -9.013941800438837E-15 -1.529251511165339E-14
q -2.996795935575497E-16 4.11452024212023E-16 -3.962473774315758E-14 -6.028539736847373E-14 1.426923214769172E-14 2.104587882804929E-14
tp 2.998763259843819E-14 -3.962473774315758E-14 1.634758731654657E-10 1.926730626511424E-11 1.452746115100908E-10 -6.795065248468577E-12
node 4.355860924660672E-14 -6.028539736847373E-14 1.926730626511424E-11 2.532274914990161E-10 -2.307902658337447E-10 8.767977775847845E-12
peri -9.013941800438837E-15 1.426923214769172E-14 1.452746115100908E-10 -2.307902658337447E-10 3.750886415784218E-10 -1.618250743930447E-11
i -1.529251511165339E-14 2.104587882804929E-14 -6.795065248468577E-12 8.767977775847845E-12 -1.618250743930447E-11 6.293530590294126E-12

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 24.7   n/a MPO232615  

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