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307261 (2002 MS4)
Classification: TransNeptunian Object          SPK-ID: 2307261
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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1411980177518866 6.8803e-05  
a 42.00959252150139 0.0034401 au
q 36.07792133090091 0.0058424 au
i 17.69561726014024 0.00012777 deg
node 216.125652276853 0.00062196 deg
peri 212.2333843164751 0.0055809 deg
M 227.1718219266938 0.0041707 deg
tp 2496091.665046946408
(2121-Dec-19.16504695)
4.6479 TDB
period 99453.7424853492
272.29
12.216
0.03345
d
yr
n .00361977328357485 4.4462e-07 deg/d
Q 47.94126371210186 0.0039258 au
  Orbit Determination Parameters
   # obs. used (total)      77  
   data-arc span      24188 days (66.22 yr)  
   first obs. used      1954-04-08  
   last obs. used      2020-06-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      3  
   norm. resid. RMS      .4495  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 06:02:31  

Additional Information
 Earth MOID = 35.1048 au 
 Jupiter MOID = 31.0905 au 
 T_jup = 5.484 
[ 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 3.76   n/a E2021B25  

307261 (2002 MS4)          Discovered 2002-Jun-18 by Trujillo, C. A., Brown, M. E. at Palomar
Reference: 20111210/Numbers.arcLast Updated: 2011-12-12
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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