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392551 (2011 SM44)
Classification: Main-belt Asteroid          SPK-ID: 2392551
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1571431277914808 9.3642e-08  
a 3.191917433448972 6.7691e-08 au
q 2.690329544304645 3.2121e-07 au
i 9.210194268249419 1.0566e-05 deg
node 186.6683776921394 5.468e-05 deg
peri 278.9866053939797 8.2924e-05 deg
M 96.6342481486076 4.7637e-05 deg
tp 2458441.380716055826
(2018-Nov-18.88071606)
0.00028281 TDB
period 2082.935874974289
5.70
6.6259e-05
1.814e-07
d
yr
n .1728329730767366 5.4979e-09 deg/d
Q 3.6935053225933 7.8328e-08 au
  Orbit Determination Parameters
   # obs. used (total)      80  
   data-arc span      6233 days (17.07 yr)  
   first obs. used      2002-01-18  
   last obs. used      2019-02-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56707  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 04:44:47  

Additional Information
 Earth MOID = 1.72645 au 
 Jupiter MOID = 1.57011 au 
 T_jup = 3.157 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457448.5 (2016-Mar-01.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1582861999644401 9.3958e-08  
q 2.687369701656455 3.2282e-07 au
tp 2458441.818632878608
(2018-Nov-19.31863288)
0.00027968 TDB
node 186.6838645066989 5.4688e-05 deg
peri 279.1726786640285 8.2468e-05 deg
i 9.209569207640435 1.0566e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      80  
   data-arc span      6233 days (17.07 yr)  
   first obs. used      2002-01-18  
   last obs. used      2019-02-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56707  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 04:44:47  

Additional Information
 Jupiter MOID = 1.57011 au 
 T_jup = 3.157 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.828047568271587E-15 -2.989981926832604E-14 1.514392296456335E-11 -5.456431453179154E-14 3.508157813277789E-12 -4.704855561489645E-14
q -2.989981926832604E-14 1.042119936875893E-13 -5.527018271583096E-11 2.060947561232264E-13 -1.302387969002789E-11 1.628649475404498E-13
tp 1.514392296456335E-11 -5.527018271583096E-11 7.822017136063314E-8 -2.671672109426954E-10 1.725920132985278E-8 -1.008274089318258E-10
node -5.456431453179154E-14 2.060947561232264E-13 -2.671672109426954E-10 2.99076117447728E-9 -3.01036692883245E-9 -8.816556100451635E-11
peri 3.508157813277789E-12 -1.302387969002789E-11 1.725920132985278E-8 -3.01036692883245E-9 6.800890060850509E-9 6.464248617574219E-11
i -4.704855561489645E-14 1.628649475404498E-13 -1.008274089318258E-10 -8.816556100451635E-11 6.464248617574219E-11 1.116408743078649E-10

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.5   n/a MPO472030  

392551 (2011 SM44)          Discovered 2002-Jan-18 by ADAS at Cima Ekar
Reference: Last Updated: 2014-04-17

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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