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JPL Small-Body Database Browser
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(2021 NB)
Classification: Apollo [NEO]          SPK-ID: 54164556
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 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .590804113429888 0.00023149  
a 2.415138626172776 0.0013473 au
q .9882647913264911 7.7947e-06 au
i .4992138925021459 0.00014814 deg
node 156.7143987101179 0.0034502 deg
peri 150.9192314338505 0.0031537 deg
M 353.6712513121875 0.0056072 deg
tp 2459420.600545472482
(2021-Jul-25.10054547)
0.0011867 TDB
period 1370.918138494222
3.75
1.1471
0.003141
d
yr
n .262597736430429 0.00021973 deg/d
Q 3.84201246101906 0.0021432 au
  Orbit Determination Parameters
   # obs. used (total)      48  
   data-arc span      5 days  
   first obs. used      2021-07-01  
   last obs. used      2021-07-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .44609  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 05:59:50  

Additional Information
 Earth MOID = .00131011 au 
 Jupiter MOID = 1.45656 au 
 T_jup = 3.254 
[ 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 26.94   .53337 E2021N49 autocmod 2.9c

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