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101328 (1998 SJ162)
Classification: Mars-crossing Asteroid          SPK-ID: 2101328
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3186202905496208 3.6958e-08  
a 2.373038460237711 4.6962e-09 au
q 1.616940256551347 8.6994e-08 au
i 4.871250954962083 3.9863e-06 deg
node 206.925370822576 3.8277e-05 deg
peri 190.7548937217562 3.8712e-05 deg
M 18.74141965491609 4.555e-06 deg
tp 2459130.988673397110
(2020-Oct-08.48867340)
1.6863e-05 TDB
period 1335.228495909388
3.66
3.9636e-06
1.085e-08
d
yr
n .2696167742846244 8.0034e-10 deg/d
Q 3.129136663924075 6.1925e-09 au
  Orbit Determination Parameters
   # obs. used (total)      878  
   data-arc span      10584 days (28.98 yr)  
   first obs. used      1992-01-27  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47421  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:28:06  

Additional Information
 Earth MOID = .623547 au 
 Jupiter MOID = 2.30241 au 
 T_jup = 3.468 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457912.5 (2017-Jun-08.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3209000917365001 3.7172e-08  
q 1.610529642937009 8.7649e-08 au
tp 2457794.901853581489
(2017-Feb-10.40185358)
1.6225e-05 TDB
node 207.0357775400298 3.817e-05 deg
peri 190.4572756749685 3.8589e-05 deg
i 4.880017869030887 3.9945e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      878  
   data-arc span      10584 days (28.98 yr)  
   first obs. used      1992-01-27  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47421  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:28:06  

Additional Information
 Jupiter MOID = 2.30241 au 
 T_jup = 3.468 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.381764157443289E-15 -3.256075468480186E-15 2.252862231421871E-13 1.130528296506686E-14 5.991345224677939E-14 -5.108017322273119E-15
q -3.256075468480186E-15 7.682328722841667E-15 -5.395393980158242E-13 -2.607361380607007E-14 -1.441969467349443E-13 1.210842128790494E-14
tp 2.252862231421871E-13 -5.395393980158242E-13 2.632529545459373E-10 3.310088840181878E-12 1.001990124898571E-10 -9.348881685495842E-13
node 1.130528296506686E-14 -2.607361380607007E-14 3.310088840181878E-12 1.456917382812372E-9 -1.449410711841914E-9 5.900688174976389E-11
peri 5.991345224677939E-14 -1.441969467349443E-13 1.001990124898571E-10 -1.449410711841914E-9 1.489137261324477E-9 -5.913856589549778E-11
i -5.108017322273119E-15 1.210842128790494E-14 -9.348881685495842E-13 5.900688174976389E-11 -5.913856589549778E-11 1.595604510039761E-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 16.57   n/a E2021B55  

101328 (1998 SJ162)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 SJ162 = 1987 SD25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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