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181711 (1993 SC9)
Classification: Main-belt Asteroid          SPK-ID: 2181711
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .205168950456237 7.086e-08  
a 2.587277215964717 1.7974e-08 au
q 2.056448265025901 1.8842e-07 au
i 1.546840417711429 6.6254e-06 deg
node 193.8448172593909 0.00015761 deg
peri 200.7184378746884 0.0001583 deg
M 173.620368939656 1.2702e-05 deg
tp 2458467.403667347357
(2018-Dec-14.90366735)
5.0377e-05 TDB
period 1520.067497648726
4.16
1.584e-05
4.337e-08
d
yr
n .2368315884372608 2.4679e-09 deg/d
Q 3.118106166903532 2.1661e-08 au
  Orbit Determination Parameters
   # obs. used (total)      409  
   data-arc span      9709 days (26.58 yr)  
   first obs. used      1993-09-18  
   last obs. used      2020-04-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55645  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:31:43  

Additional Information
 Earth MOID = 1.062 au 
 Jupiter MOID = 2.31505 au 
 T_jup = 3.391 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457354.5 (2015-Nov-28.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .202684563765281 7.0463e-08  
q 2.065639713162267 1.8694e-07 au
tp 2456944.510420435726
(2014-Oct-14.01042044)
4.8753e-05 TDB
node 193.8700679300718 0.00015818 deg
peri 200.6443076957181 0.0001589 deg
i 1.541013317840357 6.6174e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      409  
   data-arc span      9709 days (26.58 yr)  
   first obs. used      1993-09-18  
   last obs. used      2020-04-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55645  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:31:43  

Additional Information
 Jupiter MOID = 2.31505 au 
 T_jup = 3.391 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.965066512948486E-15 -1.313763432720591E-14 -1.476316031153289E-12 7.071025901105764E-14 -6.243968935353655E-13 -2.25433941131924E-15
q -1.313763432720591E-14 3.494809873316182E-14 3.848325424811128E-12 -1.901530872447075E-13 1.653477291457156E-12 5.931372302463262E-15
tp -1.476316031153289E-12 3.848325424811128E-12 2.376825672426112E-9 -2.063841641500063E-11 7.338902220962746E-10 2.57525521185121E-13
node 7.071025901105764E-14 -1.901530872447075E-13 -2.063841641500063E-11 2.502068046328215E-8 -2.501891375874098E-8 1.056559579520627E-10
peri -6.243968935353655E-13 1.653477291457156E-12 7.338902220962746E-10 -2.501891375874098E-8 2.524853242097445E-8 -1.054965128588702E-10
i -2.25433941131924E-15 5.931372302463262E-15 2.57525521185121E-13 1.056559579520627E-10 -1.054965128588702E-10 4.379027135115031E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.61   n/a E2021B55  

181711 (1993 SC9)          Discovered 1993-Sep-22 by Debehogne, H., Elst, E. W. at La Silla
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

Alternate Designations
 1993 SC9 = 2000 JL4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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