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(2018 HT)
Classification: Apollo [NEO]          SPK-ID: 3805269
[ 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 2458228.5 (2018-Apr-20.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4793283082831795 0.00083762  
a 1.936001912414302 0.0031157 au
q 1.008021390903754 3.1851e-06 au
i 4.31910097594093 0.0054865 deg
node 210.3218607001497 0.00063983 deg
peri 16.75887374242284 0.0056928 deg
M 354.6553422760854 0.012617 deg
tp 2458243.107452976950
(2018-May-04.60745298)		 0.0018532 TDB
period 983.9139086815885
2.69		 2.3752
0.006503		 d
yr
n .3658856703046183 0.00088325 deg/d
Q 2.863982433924849 0.0046091 au
   Orbit Determination Parameters
   # obs. used (total)      30  
   data-arc span      2 days  
   first obs. used      2018-04-19  
   last obs. used      2018-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      8  
   norm. resid. RMS      .61863  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Apr-21 13:12:02  

Additional Information
 Earth MOID = .010864 au 
 Jupiter MOID = 2.12669 au 
 T_jup = 3.755 
[ 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 26.9   n/a MPO445247  

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