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418993 (2009 MS9)
Classification: TransNeptunian Object          SPK-ID: 2418993
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9709330173778228 5.3657e-06  
a 377.9426442383333 0.070062 au
q 10.98565227225534 8.8643e-06 au
i 68.03192904841178 1.1822e-05 deg
node 220.2067148592204 9.0387e-06 deg
peri 128.5658190234923 6.6578e-05 deg
M .357450139234149 9.9598e-05 deg
tp 2456335.788215695258
(2013-Feb-12.28821570)
0.0019587 TDB
period 2683720.432743534
7347.63
746.25
2.043
d
yr
n .0001341421392510607 3.73e-08 deg/d
Q 744.8996362044112 0.13809 au
  Orbit Determination Parameters
   # obs. used (total)      275  
   data-arc span      5964 days (16.33 yr)  
   first obs. used      2003-06-26  
   last obs. used      2019-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      1  
   norm. resid. RMS      .32828  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 07:39:45  

Additional Information
 Earth MOID = 10.2878 au 
 Jupiter MOID = 7.33926 au 
 T_jup = 1.540 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.8   n/a MPO392086  

418993 (2009 MS9)          Discovered 2009-Jun-25 by Petit, J.-M., Gladman, B., Kavelaars, J. J. at Mauna Kea
Reference: Last Updated: 2015-01-07
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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