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(2018 AH12)
Classification: Apollo [NEO]          SPK-ID: 3797687
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1504648055585543 6.8902e-05  
a 1.074805124499268 4.7095e-05 au
q .9130847804281476 3.4048e-05 au
i 5.347738804530019 0.0025163 deg
node 128.8207640674827 0.00019117 deg
peri 72.93334233029469 0.0023269 deg
M 154.0058387839 0.056725 deg
tp 2459026.388400530364
(2020-Jun-25.88840053)
0.052688 TDB
period 406.9986976079617
1.11
0.02675
7.324e-05
d
yr
n .8845237149794694 5.8135e-05 deg/d
Q 1.236525468570387 5.4181e-05 au
  Orbit Determination Parameters
   # obs. used (total)      32  
   data-arc span      21 days  
   first obs. used      2018-01-14  
   last obs. used      2018-02-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      6  
   norm. resid. RMS      .47633  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:18:13  

Additional Information
 Earth MOID = .0114211 au 
 Jupiter MOID = 3.72173 au 
 T_jup = 5.736 
[ 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 MPO438049  

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