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(2021 JT4)
Classification: Aten [NEO]          SPK-ID: 54144927
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 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2118879498412302 1.2785e-05  
a .9450772274708715 0.00033529 au
q .7448267513004346 0.00025477 au
i 37.51491099167339 0.039052 deg
node 227.191382798463 0.00041496 deg
peri 236.8597869979712 0.098424 deg
M 158.6528315533559 0.14936 deg
tp 2459248.607993396100
(2021-Feb-03.10799340)
0.060532 TDB
period 335.5825537818956
0.92
0.17858
0.0004889
d
yr
n 1.072761369573384 0.00057088 deg/d
Q 1.145327703641309 0.00040633 au
  Orbit Determination Parameters
   # obs. used (total)      19  
   data-arc span      3 days  
   first obs. used      2021-05-08  
   last obs. used      2021-05-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .33479  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-11 15:42:04  

Additional Information
 Earth MOID = .0115258 au 
 Jupiter MOID = 4.12191 au 
 T_jup = 6.166 
[ hide covariance matrix ]
Orbital Elements at Epoch 2459343.5 (2021-May-09.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2120181969191016 1.2582e-05  
q .7447240616039461 0.00025518 au
tp 2459248.638735656735
(2021-Feb-03.13873566)
0.060452 TDB
node 227.1934642100872 0.00042096 deg
peri 236.8767466337573 0.098402 deg
i 37.52866204456172 0.039022 deg
  Orbit Determination Parameters
   # obs. used (total)      19  
   data-arc span      3 days  
   first obs. used      2021-05-08  
   last obs. used      2021-05-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .33479  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-11 15:42:04  

Additional Information
 Jupiter MOID = 4.12191 au 
 T_jup = 6.166 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.583023913372787E-10 2.462355056296962E-9 6.071011245895039E-7 -4.111947618682371E-9 9.753397189867844E-7 3.897280257834648E-7
q 2.462355056296962E-9 6.511470693266801E-8 1.540645640059772E-5 -1.073950025683349E-7 2.509599257711557E-5 9.948276675985198E-6
tp 6.071011245895039E-7 1.540645640059772E-5 .003654447979853347 -2.542915014788938E-5 .005947724126352837 .002358893454656646
node -4.111947618682371E-9 -1.073950025683349E-7 -2.542915014788938E-5 1.772061696780061E-7 -4.14117544941985E-5 -1.641840960000651E-5
peri 9.753397189867844E-7 2.509599257711557E-5 .005947724126352837 -4.14117544941985E-5 .009682923856010512 .00383964668439683
i 3.897280257834648E-7 9.948276675985198E-6 .002358893454656646 -1.641840960000651E-5 .00383964668439683 .001522720622129783

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 25.71   .30625 MPO622852 autocmod 2.9c

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