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452981 (2007 EW220)
Classification: Main-belt Asteroid          SPK-ID: 2452981
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06673984320678218 7.6967e-08  
a 3.013982710676022 5.6475e-08 au
q 2.812829977137552 2.2627e-07 au
i 9.096468657727094 8.6157e-06 deg
node 185.0512363671735 4.764e-05 deg
peri 4.413149590283152 7.8596e-05 deg
M 190.5728972454245 6.3696e-05 deg
tp 2459899.976757258580
(2022-Nov-16.47675726)
0.00034945 TDB
period 1911.215073317684
5.23
5.3718e-05
1.471e-07
d
yr
n .1883618463593817 5.2942e-09 deg/d
Q 3.215135444214493 6.0245e-08 au
  Orbit Determination Parameters
   # obs. used (total)      76  
   data-arc span      4528 days (12.40 yr)  
   first obs. used      2007-03-13  
   last obs. used      2019-08-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .70426  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 06:34:58  

Additional Information
 Earth MOID = 1.81351 au 
 Jupiter MOID = 1.73989 au 
 T_jup = 3.226 
[ show covariance matrix ]

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 16.9   n/a MPO456159  

452981 (2007 EW220)          Discovered 2007-Mar-13 by Spacewatch at Kitt Peak
Reference: Last Updated: 2016-01-04

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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