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(2018 PR9)
Classification: Apollo [NEO]          SPK-ID: 3826676
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 2458339.5 (2018-Aug-09.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .543769275922209 0.0085522  
a 1.803306755181547 0.031366 au
q .8227239466508488 0.0013454 au
i 4.494473919569088 0.071835 deg
node 129.6411505920081 0.052007 deg
peri 266.8997386791212 0.16749 deg
M 335.2697530114747 0.74534 deg
tp 2458400.261543041294
(2018-Oct-08.76154304)
0.2462 TDB
period 884.51019130603
2.42
23.077
0.06318
d
yr
n .4070049203937824 0.010619 deg/d
Q 2.783889563712245 0.048422 au
  Orbit Determination Parameters
   # obs. used (total)      12  
   data-arc span      1 day  
   first obs. used      2018-08-08  
   last obs. used      2018-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      9  
   norm. resid. RMS      .63214  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:34:58  

Additional Information
 Earth MOID = .0331195 au 
 Jupiter MOID = 2.65871 au 
 T_jup = 3.871 
[ 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 24.3   .43857 MPO452046 autocmod 2.6n

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