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307261 (2002 MS4)
Classification: TransNeptunian Object          SPK-ID: 2307261
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1393580398386743 7.0944e-05  
a 42.04381816899316 0.00355 au
q 36.18467408162864 0.0060358 au
i 17.68276097247939 0.00013416 deg
node 216.0192865034007 0.0006471 deg
peri 212.5409565196977 0.0055694 deg
M 225.3373225506854 0.0043367 deg
tp 2496247.937064491001
(2122-May-24.43706449)
4.8954 TDB
period 99575.30621848635
272.62
12.612
0.03453
d
yr
n .003615354184400844 4.579e-07 deg/d
Q 47.90296225635769 0.0040448 au
  Orbit Determination Parameters
   # obs. used (total)      74  
   data-arc span      23443 days (64.18 yr)  
   first obs. used      1954-04-08  
   last obs. used      2018-06-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      3  
   norm. resid. RMS      .45494  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 04:08:35  

Additional Information
 Earth MOID = 35.212 au 
 Jupiter MOID = 31.1956 au 
 T_jup = 5.487 
[ hide covariance matrix ]
Orbital Elements at Epoch 2454805.5 (2008-Dec-05.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1405408394792123 7.0961e-05  
q 36.05632860939549 0.0060135 au
tp 2496375.189618235869
(2122-Sep-28.68961824)
5.0254 TDB
node 216.047756362536 0.00064766 deg
peri 213.345083385462 0.0051939 deg
i 17.68547922346316 0.00013424 deg
  Orbit Determination Parameters
   # obs. used (total)      74  
   data-arc span      23443 days (64.18 yr)  
   first obs. used      1954-04-08  
   last obs. used      2018-06-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      3  
   norm. resid. RMS      .45494  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 04:08:35  

Additional Information
 Jupiter MOID = 31.1956 au 
 T_jup = 5.487 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.035522900361255E-9 -4.26578609838759E-7 -.0003495328337102189 -7.381324376942064E-10 2.74021733704194E-7 -7.015344266838733E-10
q -4.26578609838759E-7 3.616268936005686E-5 .02949840261086367 6.188778679323384E-8 -2.365550535073529E-5 5.936644176476436E-8
tp -.0003495328337102189 .02949840261086367 25.25458935667607 5.576856779823829E-5 -.01566116339646582 4.979516010840042E-5
node -7.381324376942064E-10 6.188778679323384E-8 5.576856779823829E-5 4.194698011969428E-7 -4.237022549648382E-7 8.374126798458752E-8
peri 2.74021733704194E-7 -2.365550535073529E-5 -.01566116339646582 -4.237022549648382E-7 2.697683454048058E-5 -1.144321305222709E-7
i -7.015344266838733E-10 5.936644176476436E-8 4.979516010840042E-5 8.374126798458752E-8 -1.144321305222709E-7 1.801940501556858E-8

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 3.6   n/a MPO423167  

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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