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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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1571431492244296 6.3014e-08  
a 3.191917419936911 5.4177e-08 au
q 2.690329464503709 1.9493e-07 au
i 9.210198117761616 9.6882e-06 deg
node 186.668349473931 4.4887e-05 deg
peri 278.9866506268163 5.6863e-05 deg
M 96.63423581238159 3.1578e-05 deg
tp 2458441.380790982708
(2018-Nov-18.88079098)
0.00018133 TDB
period 2082.935861748027
5.70
5.3031e-05
1.452e-07
d
yr
n .1728329741741943 4.4003e-09 deg/d
Q 3.693505375370113 6.2691e-08 au
  Orbit Determination Parameters
   # obs. used (total)      99  
   data-arc span      6697 days (18.34 yr)  
   first obs. used      2002-01-18  
   last obs. used      2020-05-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59479  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 16:24:28  

Additional Information
 Earth MOID = 1.72645 au 
 Jupiter MOID = 1.57011 au 
 T_jup = 3.157 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457850.5 (2017-Apr-07.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1579349060069849 6.2978e-08  
q 2.689256153342764 1.9523e-07 au
tp 2458442.057493112275
(2018-Nov-19.55749311)
0.00018038 TDB
node 186.6800571349042 4.4881e-05 deg
peri 279.1422589520495 5.6738e-05 deg
i 9.21003652813884 9.6883e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      99  
   data-arc span      6697 days (18.34 yr)  
   first obs. used      2002-01-18  
   last obs. used      2020-05-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59479  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 16:24:28  

Additional Information
 Jupiter MOID = 1.57011 au 
 T_jup = 3.157 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.966203787026993E-15 -1.197345803225468E-14 2.097678329961458E-13 -2.14703925823307E-14 -3.348258313306462E-14 -1.63231740666796E-14
q -1.197345803225468E-14 3.811433610364961E-14 -2.124679264872534E-13 6.873071068959118E-14 4.84927698793244E-14 5.182215010117828E-14
tp 2.097678329961458E-13 -2.124679264872534E-13 3.253568731719745E-8 -3.723973107415333E-11 6.285831144684067E-9 -2.521789509826459E-11
node -2.14703925823307E-14 6.873071068959118E-14 -3.723973107415333E-11 2.014340176009312E-9 -1.99432057131937E-9 4.114075471881239E-11
peri -3.348258313306462E-14 4.84927698793244E-14 6.285831144684067E-9 -1.99432057131937E-9 3.219184770143263E-9 -4.494295981757127E-11
i -1.63231740666796E-14 5.182215010117828E-14 -2.521789509826459E-11 4.114075471881239E-11 -4.494295981757127E-11 9.386233161020879E-11

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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