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JPL Small-Body Database Browser
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(2005 NE21)
Classification: Aten [NEO]          SPK-ID: 3283679
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4964925313804012 1.0328e-06  
a .7892190148977428 4.9927e-09 au
q .397377668377616 8.128e-07 au
i 10.63620773946467 5.126e-05 deg
node 289.7434995687573 2.0507e-05 deg
peri 194.6972570424151 6.8271e-05 deg
M 239.8484627655397 0.00021969 deg
tp 2459085.971547701022
(2020-Aug-24.47154770)
0.00015698 TDB
period 256.0912484400822
0.70
2.4301e-06
6.653e-09
d
yr
n 1.405748935947061 1.3339e-08 deg/d
Q 1.18106036141787 7.4716e-09 au
  Orbit Determination Parameters
   # obs. used (total)      132  
   data-arc span      5116 days (14.01 yr)  
   first obs. used      2005-07-07  
   last obs. used      2019-07-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      1  
   norm. resid. RMS      .42544  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Aug-04 05:58:52  

Additional Information
 Earth MOID = .0564712 au 
 Jupiter MOID = 3.89755 au 
 T_jup = 7.258 
[ show covariance matrix ]

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 21.3   n/a MPO477549  

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