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JPL Small-Body Database Browser
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(2017 TH4)
Classification: Apollo [NEO]          SPK-ID: 3785768
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .396597708983734 0.00026111  
a 1.050024257900037 0.0001998 au
q .633587042839537 0.00015363 au
i 13.53733700107729 0.0099324 deg
node 199.4600556784484 0.00052893 deg
peri 71.52133532124145 0.0040984 deg
M 226.0286535868389 0.39219 deg
tp 2459542.753694880801
(2021-Nov-24.25369488)
0.46989 TDB
period 393.004411515834
1.08
0.11217
0.0003071
d
yr
n .916020251812099 0.00026146 deg/d
Q 1.466461472960538 0.00027904 au
  Orbit Determination Parameters
   # obs. used (total)      102  
   data-arc span      14 days  
   first obs. used      2017-10-13  
   last obs. used      2017-10-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .41651  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 19:53:14  

Additional Information
 Earth MOID = .00656382 au 
 Jupiter MOID = 3.66757 au 
 T_jup = 5.757 
[ 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 24.5   n/a MPO421496  

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