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(2021 NM4)
Classification: Apollo [NEO]          SPK-ID: 54168304
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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2107612233372057 0.00015675  
a 1.219686472988791 0.00024101 au
q .9626238598538319 1.3244e-06 au
i 20.8715866651422 0.0089575 deg
node 110.7451855375602 0.00011739 deg
peri 130.0657342591146 0.014227 deg
M 24.1466281235354 0.018718 deg
tp 2459363.499180045180
(2021-May-28.99918004)
0.015801 TDB
period 492.006383788036
1.35
0.14583
0.0003993
d
yr
n .7316978231629888 0.00021688 deg/d
Q 1.476749086123751 0.00029181 au
  Orbit Determination Parameters
   # obs. used (total)      70  
   data-arc span      6 days  
   first obs. used      2021-07-11  
   last obs. used      2021-07-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .37121  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-19 05:49:57  

Additional Information
 Earth MOID = .00894868 au 
 Jupiter MOID = 3.61855 au 
 T_jup = 5.151 
[ 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 24.86   .37751 5 autocmod 2.9c

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