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(2018 PK9)
Classification: Apollo [NEO]          SPK-ID: 3826669
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

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 2458338.5 (2018-Aug-08.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4733738541297954 0.0032726  
a 1.858175117402786 0.011443 au
q .9785636004297443 5.9182e-05 au
i 2.487366460445199 0.012596 deg
node 326.1687267245384 0.0096321 deg
peri 39.31966089203521 0.017566 deg
M 343.0917350325647 0.17419 deg
tp 2458381.953516865545
(2018-Sep-20.45351687)
0.046353 TDB
period 925.1845829080958
2.53
8.5459
0.0234
d
yr
n .3891115423350726 0.0035942 deg/d
Q 2.737786634375828 0.016859 au
  Orbit Determination Parameters
   # obs. used (total)      14  
   data-arc span      5 days  
   first obs. used      2018-08-07  
   last obs. used      2018-08-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      8  
   norm. resid. RMS      .38411  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:34:57  

Additional Information
 Earth MOID = .0103061 au 
 Jupiter MOID = 2.72379 au 
 T_jup = 3.852 
[ 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 25.3   .43987 MPO452045 autocmod 2.6n

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