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120927 (1998 SJ108)
Classification: Main-belt Asteroid          SPK-ID: 2120927
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1519268303521331 5.4254e-08  
a 3.176687873725965 2.6394e-08 au
q 2.694063754052722 1.8235e-07 au
i 6.590565504510614 5.6124e-06 deg
node 352.5358129641965 4.0506e-05 deg
peri 9.457507764037155 4.3507e-05 deg
M 345.6095682499842 1.5903e-05 deg
tp 2459283.166884023131
(2021-Mar-09.66688402)
9.1686e-05 TDB
period 2068.046238313505
5.66
2.5774e-05
7.057e-08
d
yr
n .1740773457239431 2.1695e-09 deg/d
Q 3.659311993399208 3.0404e-08 au
  Orbit Determination Parameters
   # obs. used (total)      662  
   data-arc span      8117 days (22.22 yr)  
   first obs. used      1998-09-17  
   last obs. used      2020-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53098  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 09:26:13  

Additional Information
 Earth MOID = 1.68985 au 
 Jupiter MOID = 1.79796 au 
 T_jup = 3.172 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457521.5 (2016-May-13.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1564771070220921 5.3838e-08  
q 2.676232715445467 1.8167e-07 au
tp 2457220.035149000933
(2015-Jul-16.53514900)
8.4348e-05 TDB
node 352.8650222847455 4.0514e-05 deg
peri 9.829384424886447 4.3334e-05 deg
i 6.595825097913285 5.6129e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      662  
   data-arc span      8117 days (22.22 yr)  
   first obs. used      1998-09-17  
   last obs. used      2020-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53098  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 09:26:13  

Additional Information
 Jupiter MOID = 1.79796 au 
 T_jup = 3.172 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.898524892779645E-15 -9.721213362106482E-15 -6.059561120147246E-13 -1.148753018924423E-14 -7.926354417404701E-14 -2.421475853620895E-15
q -9.721213362106482E-15 3.300303838040459E-14 1.959330117480315E-12 3.848338223809155E-14 2.644036112648939E-13 8.475050142016007E-15
tp -6.059561120147246E-13 1.959330117480315E-12 7.114662690704203E-9 4.693724209613129E-12 1.321828951112109E-9 4.303796368575825E-12
node -1.148753018924423E-14 3.848338223809155E-14 4.693724209613129E-12 1.64139794409719E-9 -1.629005441100342E-9 -2.201249659080569E-11
peri -7.926354417404701E-14 2.644036112648939E-13 1.321828951112109E-9 -1.629005441100342E-9 1.877797369489859E-9 2.265944138143381E-11
i -2.421475853620895E-15 8.475050142016007E-15 4.303796368575825E-12 -2.201249659080569E-11 2.265944138143381E-11 3.150479675539032E-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 14.75   n/a E2021B55  

120927 (1998 SJ108)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1998 SJ108 = 2004 SF48 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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