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216712 (2005 EN1)
Classification: Main-belt Asteroid          SPK-ID: 2216712
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1295579877617195 3.9202e-08  
a 2.330051861099202 1.2657e-08 au
q 2.02817503059474 8.7496e-08 au
i 1.23685678131386 5.7818e-06 deg
node 96.00719931191887 0.00026955 deg
peri 132.4341219152684 0.00027103 deg
M 55.034688071826 2.8474e-05 deg
tp 2458801.899280948982
(2019-Nov-14.39928095)
0.00010245 TDB
period 1299.112639015166
3.56
1.0585e-05
2.898e-08
d
yr
n .2771122296777203 2.258e-09 deg/d
Q 2.631928691603664 1.4297e-08 au
  Orbit Determination Parameters
   # obs. used (total)      331  
   data-arc span      10163 days (27.82 yr)  
   first obs. used      1992-09-30  
   last obs. used      2020-07-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56706  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 15:15:31  

Additional Information
 Earth MOID = 1.01833 au 
 Jupiter MOID = 2.34994 au 
 T_jup = 3.560 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457237.5 (2015-Aug-03.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1294181368391681 3.9265e-08  
q 2.028392266663242 8.7652e-08 au
tp 2457502.184376867957
(2016-Apr-23.68437687)
0.00010104 TDB
node 96.005280832766 0.00026962 deg
peri 132.1620514083435 0.0002711 deg
i 1.236938806693379 5.7797e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      331  
   data-arc span      10163 days (27.82 yr)  
   first obs. used      1992-09-30  
   last obs. used      2020-07-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56706  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 15:15:31  

Additional Information
 Jupiter MOID = 2.34994 au 
 T_jup = 3.560 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.541731947799916E-15 -3.418861544054446E-15 -4.508327470088668E-13 -8.404123768116446E-15 -1.340550375040545E-13 -2.152514257110697E-16
q -3.418861544054446E-15 7.682948396136556E-15 1.156502282689899E-12 1.847936670934063E-14 3.356022862977092E-13 4.718356561915357E-16
tp -4.508327470088668E-13 1.156502282689899E-12 1.020814377942173E-8 -9.835549571776799E-12 2.892883978608709E-9 2.712456823590399E-13
node -8.404123768116446E-15 1.847936670934063E-14 -9.835549571776799E-12 7.269755675966882E-8 -7.268292981597489E-8 7.964011919514945E-10
peri -1.340550375040545E-13 3.356022862977092E-13 2.892883978608709E-9 -7.268292981597489E-8 7.34961350437912E-8 -7.961215286241516E-10
i -2.152514257110697E-16 4.718356561915357E-16 2.712456823590399E-13 7.964011919514945E-10 -7.961215286241516E-10 3.340448684006583E-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 17.1   n/a MPO470327  

216712 (2005 EN1)          Discovered 2005-Mar-03 by Lowe, A. at Mayhill
Reference: 20090707/Numbers.arcLast Updated: 2009-07-09

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