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

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9709321844992486 4.4224e-06  
a 377.9317762140144 0.057749 au
q 10.98565114286025 7.6081e-06 au
i 68.03193227312482 1.0987e-05 deg
node 220.2067107825928 8.2676e-06 deg
peri 128.5658240215031 6.5294e-05 deg
M .3574655441254719 8.2149e-05 deg
tp 2456335.788318442558
(2013-Feb-12.28831844)
0.0019262 TDB
period 2683604.674983618
7347.31
615.09
1.684
d
yr
n .0001341479254958436 3.0747e-08 deg/d
Q 744.8779012851686 0.11382 au
  Orbit Determination Parameters
   # obs. used (total)      282  
   data-arc span      6292 days (17.23 yr)  
   first obs. used      2003-06-26  
   last obs. used      2020-09-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      1  
   norm. resid. RMS      .33802  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 12:40:06  

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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