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JPL Small-Body Database Browser
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(2021 KO2)
Classification: Aten [NEO]          SPK-ID: 54149827
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4243567604296367 0.00028217  
a .9990158612104012 0.00020058 au
q .5750767267293317 0.00016649 au
i 16.82279433573419 0.01471 deg
node 69.04269056767842 8.9419e-05 deg
peri 62.55471595703823 0.0082076 deg
M 99.25973206556664 0.054939 deg
tp 2459295.939459278714
(2021-Mar-22.43945928)
0.025375 TDB
period 364.7178357861118
1.00
0.10984
0.0003007
d
yr
n .9870644226215507 0.00029727 deg/d
Q 1.422954995691471 0.0002857 au
  Orbit Determination Parameters
   # obs. used (total)      20  
   data-arc span      2 days  
   first obs. used      2021-05-30  
   last obs. used      2021-06-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .43194  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-23 05:48:54  

Additional Information
 Earth MOID = .00246492 au 
 Jupiter MOID = 3.69439 au 
 T_jup = 5.968 
[ hide covariance matrix ]
Orbital Elements at Epoch 2459365.5 (2021-May-31.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4249985825089182 0.00028102  
q .5745649642655112 0.00016534 au
tp 2459295.993917632682
(2021-Mar-22.49391763)
0.02525 TDB
node 69.0463599212581 9.7805e-05 deg
peri 62.54672429209216 0.0082294 deg
i 16.84545205208792 0.014678 deg
  Orbit Determination Parameters
   # obs. used (total)      20  
   data-arc span      2 days  
   first obs. used      2021-05-30  
   last obs. used      2021-06-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .43194  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-23 05:48:54  

Additional Information
 Jupiter MOID = 3.69439 au 
 T_jup = 5.968 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.897204074236667E-8 -4.645556245834068E-8 7.095643070288913E-6 -2.741119509057806E-8 2.30623380562271E-6 4.123851593715546E-6
q -4.645556245834068E-8 2.733643594686684E-8 -4.173518865044096E-6 1.611087505454968E-8 -1.354837411838667E-6 -2.425071307062821E-6
tp 7.095643070288913E-6 -4.173518865044096E-6 .0006375745444893317 -2.46364662152855E-6 .0002073218034905705 .0003705733659865847
node -2.741119509057806E-8 1.611087505454968E-8 -2.46364662152855E-6 9.565814893520375E-9 -8.033114804600468E-7 -1.432879565473517E-6
peri 2.30623380562271E-6 -1.354837411838667E-6 .0002073218034905705 -8.033114804600468E-7 6.772271481272851E-5 .0001205922763707531
i 4.123851593715546E-6 -2.425071307062821E-6 .0003705733659865847 -1.432879565473517E-6 .0001205922763707531 .0002154446498510825

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 28.02   .34359 MPO641198 autocmod 2.9c

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