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JPL Small-Body Database Browser
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(2021 JU4)
Classification: Amor [NEO]          SPK-ID: 54144928
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 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1898728430443132 0.00042675  
a 1.27142382085272 0.00070781 au
q 1.03001496527315 3.084e-05 au
i 15.03356701064158 0.020584 deg
node 45.21390511728949 0.0037421 deg
peri 185.2876044679453 0.0042557 deg
M 33.26526543048546 0.030176 deg
tp 2459348.113697623101
(2021-May-13.61369762)
0.0034943 TDB
period 523.641360748627
1.43
0.43727
0.001197
d
yr
n .6874934391838793 0.0005741 deg/d
Q 1.512832676432289 0.0008422 au
  Orbit Determination Parameters
   # obs. used (total)      94  
   data-arc span      11 days  
   first obs. used      2021-05-06  
   last obs. used      2021-05-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .74685  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-19 06:23:08  

Additional Information
 Earth MOID = .0222507 au 
 Jupiter MOID = 3.46844 au 
 T_jup = 5.030 
[ hide covariance matrix ]
Orbital Elements at Epoch 2459343.5 (2021-May-09.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1895784911942327 0.00042771  
q 1.029997292303262 3.0884e-05 au
tp 2459348.074038682857
(2021-May-13.57403868)
0.0036901 TDB
node 45.22771828240776 0.0038011 deg
peri 185.233345270959 0.0045092 deg
i 15.04578743132134 0.020547 deg
  Orbit Determination Parameters
   # obs. used (total)      94  
   data-arc span      11 days  
   first obs. used      2021-05-06  
   last obs. used      2021-05-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .74685  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-19 06:23:08  

Additional Information
 Jupiter MOID = 3.46844 au 
 T_jup = 5.030 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.829376248471459E-7 1.32089109184908E-8 1.574999281903738E-6 -1.62570287085005E-6 1.925804742076769E-6 8.787851885741899E-6
q 1.32089109184908E-8 9.538381777251793E-10 1.136680331093087E-7 -1.173927412876161E-7 1.389961852425442E-7 6.345864484161337E-7
tp 1.574999281903738E-6 1.136680331093087E-7 1.361650949551287E-5 -1.399170169552387E-5 1.663837443546933E-5 7.562625511397364E-5
node -1.62570287085005E-6 -1.173927412876161E-7 -1.399170169552387E-5 1.444808585092898E-5 -1.710906496956602E-5 -7.810121289503078E-5
peri 1.925804742076769E-6 1.389961852425442E-7 1.663837443546933E-5 -1.710906496956602E-5 2.033301500247614E-5 9.247706866934245E-5
i 8.787851885741899E-6 6.345864484161337E-7 7.562625511397364E-5 -7.810121289503078E-5 9.247706866934245E-5 .0004221906729173248

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 24.71   .2441 MPO622852 autocmod 2.9c

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