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JPL Small-Body Database Browser
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(2021 KN2)
Classification: Apollo [NEO]          SPK-ID: 54149826
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3717435786595887 5.0139e-05  
a 1.40656868161701 8.8734e-05 au
q .8836858062822029 1.5003e-05 au
i 3.766057501711479 0.00027642 deg
node 70.35588055253233 9.4715e-05 deg
peri 237.3635203854141 0.000675 deg
M 351.0550435717651 0.0014884 deg
tp 2459411.639640769278
(2021-Jul-16.13964077)
0.0011124 TDB
period 609.3121549185141
1.67
0.057658
0.0001579
d
yr
n .5908301633144744 5.5909e-05 deg/d
Q 1.929451556951816 0.00012172 au
  Orbit Determination Parameters
   # obs. used (total)      65  
   data-arc span      1 day  
   first obs. used      2021-05-30  
   last obs. used      2021-05-31  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      6  
   norm. resid. RMS      .23451  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jun-01 05:50:56  

Additional Information
 Earth MOID = .000897034 au 
 Jupiter MOID = 3.33914 au 
 T_jup = 4.663 
[ 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 .3800171790329969 4.8176e-05  
q .8749327736047814 1.2746e-05 au
tp 2459412.425914213717
(2021-Jul-16.92591421)
0.0014203 TDB
node 70.50634705436377 0.00010274 deg
peri 238.8362650838705 0.00039835 deg
i 3.187980860721442 0.00036511 deg
  Orbit Determination Parameters
   # obs. used (total)      65  
   data-arc span      1 day  
   first obs. used      2021-05-30  
   last obs. used      2021-05-31  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      6  
   norm. resid. RMS      .23451  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jun-01 05:50:56  

Additional Information
 Jupiter MOID = 3.33914 au 
 T_jup = 4.663 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.320962310780021E-9 -6.061189078972992E-10 -6.68875967293032E-8 -1.967939611218673E-10 -2.028517499871965E-9 1.517352869048464E-8
q -6.061189078972992E-10 1.624585615635974E-10 1.685657525358335E-8 -1.387732283811656E-10 -2.747883552033656E-10 -3.622838001775778E-9
tp -6.68875967293032E-8 1.685657525358335E-8 2.017179015548743E-6 3.363208767806166E-8 1.762547733341042E-7 -4.871986333769755E-7
node -1.967939611218673E-10 -1.387732283811656E-10 3.363208767806166E-8 1.055572785776853E-8 3.506824941409444E-8 -2.010731796406264E-8
peri -2.028517499871965E-9 -2.747883552033656E-10 1.762547733341042E-7 3.506824941409444E-8 1.586816504345042E-7 -7.557811967583017E-8
i 1.517352869048464E-8 -3.622838001775778E-9 -4.871986333769755E-7 -2.010731796406264E-8 -7.557811967583017E-8 1.333085201168932E-7

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 28.63   .35333 MPO622918 autocmod 2.9c

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