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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1784174885097774 1.1829e-07  
a 5.212279367797237 2.4395e-07 au
q 4.282317573583524 7.7956e-07 au
i 8.107696659649706 1.5477e-05 deg
node 157.9087390086197 5.3342e-05 deg
peri 248.4452610492435 7.8808e-05 deg
M 303.0939324914509 5.6324e-05 deg
tp 2459687.562156714469
(2022-Apr-18.06215671)
0.00071395 TDB
period 4346.502706061176
11.90
0.00030515
8.355e-07
d
yr
n .08282521013917278 5.8148e-09 deg/d
Q 6.14224116201095 2.8748e-07 au
  Orbit Determination Parameters
   # obs. used (total)      84  
   data-arc span      4427 days (12.12 yr)  
   first obs. used      2008-09-06  
   last obs. used      2020-10-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65168  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 18:46:43  

Additional Information
 Earth MOID = 3.30284 au 
 Jupiter MOID = .070266 au 
 T_jup = 2.948 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457935.5 (2017-Jul-01.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1763671234401236 1.1826e-07  
q 4.30284013797635 7.7396e-07 au
tp 2459686.295394256561
(2022-Apr-16.79539426)
0.00072346 TDB
node 158.0178080716052 5.3439e-05 deg
peri 247.7164637117451 7.9904e-05 deg
i 8.093930386906084 1.545e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      84  
   data-arc span      4427 days (12.12 yr)  
   first obs. used      2008-09-06  
   last obs. used      2020-10-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65168  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 18:46:43  

Additional Information
 Jupiter MOID = .070266 au 
 T_jup = 2.948 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.398437537402147E-14 -9.029190640848308E-14 -4.704061625418651E-11 4.316476305154912E-14 -2.668450186121592E-12 -3.611586038254154E-14
q -9.029190640848308E-14 5.99008548380038E-13 3.391757058293317E-10 -2.90501963996479E-13 1.96737611637281E-11 2.476467004740593E-13
tp -4.704061625418651E-11 3.391757058293317E-10 5.233969899401264E-7 -2.322573866043154E-10 4.199318018518365E-8 1.730692160494041E-10
node 4.316476305154912E-14 -2.90501963996479E-13 -2.322573866043154E-10 2.855731244827636E-9 -2.842872589886769E-9 -1.268427211947684E-10
peri -2.668450186121592E-12 1.96737611637281E-11 4.199318018518365E-8 -2.842872589886769E-9 6.384583942395435E-9 1.364135710091094E-10
i -3.611586038254154E-14 2.476467004740593E-13 1.730692160494041E-10 -1.268427211947684E-10 1.364135710091094E-10 2.386981544498447E-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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