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JPL Small-Body Database Browser
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441371 (2008 EH21)
Classification: Main-belt Asteroid          SPK-ID: 2441371
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1564731401155556 5.9149e-08  
a 2.247857454341791 1.7528e-08 au
q 1.896128139928772 1.345e-07 au
i 1.636577908043274 6.4091e-06 deg
node 278.4563583669971 0.00024878 deg
peri 307.8454964952176 0.00025054 deg
M 77.45222278794759 2.732e-05 deg
tp 2458335.660375627193
(2018-Aug-05.16037563)		 9.2094e-05 TDB
period 1230.981647037339
3.37		 1.4398e-05
3.942e-08		 d
yr
n .2924495266573867 3.4206e-09 deg/d
Q 2.59958676875481 2.027e-08 au
   Orbit Determination Parameters
   # obs. used (total)      96  
   data-arc span      4702 days (12.87 yr)  
   first obs. used      2006-11-16  
   last obs. used      2019-10-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55476  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 15:56:48  

Additional Information
 Earth MOID = .887135 au 
 Jupiter MOID = 2.3872 au 
 T_jup = 3.613 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.9   n/a MPO437716  

441371 (2008 EH21)          Discovered 2008-Mar-02 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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