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(2021 NE)
Classification: Apollo [NEO]          SPK-ID: 54165115
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

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.


Orbital Elements at Epoch 2459398.5 (2021-Jul-03.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5699778901024718 0.00094667  
a 2.317921444155252 0.0050546 au
q .9967574699923671 2.3346e-05 au
i 6.87141518517056 0.0077733 deg
node 104.1451553973932 0.00083529 deg
peri 207.8959626344494 0.00266 deg
M 352.457711222955 0.026221 deg
tp 2459425.505184744829
(2021-Jul-30.00518474)
0.0056556 TDB
period 1288.980944050687
3.53
4.2162
0.01154
d
yr
n .2792903973185841 0.00091355 deg/d
Q 3.639085418318138 0.0079356 au
  Orbit Determination Parameters
   # obs. used (total)      24  
   data-arc span      3 days  
   first obs. used      2021-07-01  
   last obs. used      2021-07-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      8  
   norm. resid. RMS      .33652  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-05 05:51:27  

Additional Information
 Earth MOID = .0142548 au 
 Jupiter MOID = 1.68414 au 
 T_jup = 3.334 
[ 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 26.73   .2123 E2021N23 autocmod 2.9c

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