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312618 (2009 SQ246)
Classification: Jupiter Trojan          SPK-ID: 2312618
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1777887483355749 1.2991e-07  
a 5.219114312208516 5.3853e-07 au
q 4.291214511220679 1.0283e-06 au
i 8.099805049524681 1.6198e-05 deg
node 157.9361445078767 8.9447e-05 deg
peri 247.9465646505525 0.00013141 deg
M 270.383081767239 0.00010934 deg
tp 2459684.629457461209
(2022-Apr-15.12945746)
0.001478 TDB
period 4355.054964871122
11.92
0.00067406
1.845e-06
d
yr
n .08266256175957434 1.2794e-08 deg/d
Q 6.147014113196353 6.3428e-07 au
  Orbit Determination Parameters
   # obs. used (total)      61  
   data-arc span      3985 days (10.91 yr)  
   first obs. used      2008-09-06  
   last obs. used      2019-08-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64534  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 06:02:08  

Additional Information
 Earth MOID = 3.311 au 
 Jupiter MOID = .0825773 au 
 T_jup = 2.948 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456766.5 (2014-Apr-19.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1770516267481148 1.2718e-07  
q 4.29755024496463 9.9633e-07 au
tp 2455332.970523279893
(2010-May-16.47052328)
0.00090716 TDB
node 158.055953171313 8.9482e-05 deg
peri 248.0567276754345 0.00013194 deg
i 8.096210388560214 1.6183e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      61  
   data-arc span      3985 days (10.91 yr)  
   first obs. used      2008-09-06  
   last obs. used      2019-08-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64534  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 06:02:08  

Additional Information
 Jupiter MOID = .0825773 au 
 T_jup = 2.948 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.617406790262809E-14 -1.19817462591265E-13 -5.332423046493512E-11 3.964671020688027E-14 -6.258028009366989E-12 -4.983444845993459E-14
q -1.19817462591265E-13 9.926648733931267E-13 5.809372143395234E-10 -1.545086946497849E-13 6.767088143214031E-11 4.393803019011359E-13
tp -5.332423046493512E-11 5.809372143395234E-10 8.229460697291204E-7 2.736522652738156E-10 8.77956390239257E-8 2.831173595763625E-10
node 3.964671020688027E-14 -1.545086946497849E-13 2.736522652738156E-10 8.006981661725788E-9 -7.898588160240301E-9 -4.561768861686572E-10
peri -6.258028009366989E-12 6.767088143214031E-11 8.77956390239257E-8 -7.898588160240301E-9 1.740704535411825E-8 4.846483010065428E-10
i -4.983444845993459E-14 4.393803019011359E-13 2.831173595763625E-10 -4.561768861686572E-10 4.846483010065428E-10 2.618914256918234E-10

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.5   n/a MPO258227  

312618 (2009 SQ246)          Discovered 2009-Sep-17 by Spacewatch at Kitt Peak
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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