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(2021 JH3)
Classification: Apollo [NEO]          SPK-ID: 54144287
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 2459344.5 (2021-May-10.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5724051060099877 0.00097252  
a 2.24733948952528 0.0049777 au
q .9609508907831305 5.7232e-05 au
i 8.608110500774616 0.0099547 deg
node 51.95379636040266 0.00030514 deg
peri 214.72094815 0.002224 deg
M 351.1632529749922 0.031645 deg
tp 2459374.705871684725
(2021-Jun-09.20587168)
0.0078276 TDB
period 1230.556196270817
3.37
4.0884
0.01119
d
yr
n .2925506377449278 0.00097196 deg/d
Q 3.53372808826743 0.0078269 au
  Orbit Determination Parameters
   # obs. used (total)      34  
   data-arc span      4 days  
   first obs. used      2021-05-08  
   last obs. used      2021-05-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      8  
   norm. resid. RMS      .4486  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-12 05:52:58  

Additional Information
 Earth MOID = .00949045 au 
 Jupiter MOID = 1.62293 au 
 T_jup = 3.381 
[ 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 26.999   .48123 4 autocmod 2.9c

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