+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   101328 (1998 SJ162) Classification: Mars-crossing Asteroid          SPK-ID: 2101328 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .3186080672999219 3.8641e-08   a 2.373067570300931 5.0191e-09 au q 1.61698909815523 9.1284e-08 au i 4.871236327253621 4.6616e-06 deg node 206.9268408001342 4.0115e-05 deg peri 190.7333928591873 4.0579e-05 deg M 324.8283743093482 4.8578e-06 deg tp 2459130.952836109576 (2020-Oct-08.45283611) 1.8119e-05 TDB period 1335.253064857035 3.66 4.2362e-06 1.16e-08 d yr n .269611813277167 8.5536e-10 deg/d Q 3.129146042446632 6.6183e-09 au   Orbit Determination Parameters    # obs. used (total)      713      data-arc span      10521 days (28.80 yr)      first obs. used      1992-01-27      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49999      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 22:29:05   Additional Information  Earth MOID = .624646 au   Jupiter MOID = 2.30133 au   T_jup = 3.468  [ hide covariance matrix ] Orbital Elements at Epoch 2457621.5 (2016-Aug-21.0) TDB Reference: JPL 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .3209525920441106 3.8815e-08   q 1.610505183750639 9.1972e-08 au tp 2457794.925599764342 (2017-Feb-10.42559976) 1.703e-05 TDB node 207.0402004906698 4.0001e-05 deg peri 190.4656920054661 4.0451e-05 deg i 4.880064974047837 4.6715e-06 deg   Orbit Determination Parameters    # obs. used (total)      713      data-arc span      10521 days (28.80 yr)      first obs. used      1992-01-27      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49999      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 22:29:05   Additional Information  Jupiter MOID = 2.30133 au   T_jup = 3.468  Orbit Covariance (6×6)   e q tp node peri i e 1.506641805413409E-15 -3.567571942415889E-15 1.713489783953427E-13 -7.841386716205125E-15 7.339822998863284E-14 -1.053196652502928E-15 q -3.567571942415889E-15 8.45877946976901E-15 -4.068064390290983E-13 1.886292381086134E-14 -1.753014566022872E-13 2.575844690122307E-15 tp 1.713489783953427E-13 -4.068064390290983E-13 2.900294291991312E-10 -3.095829626281017E-12 1.097454664654711E-10 5.153232579322738E-13 node -7.841386716205125E-15 1.886292381086134E-14 -3.095829626281017E-12 1.600045470204357E-9 -1.594364059103271E-9 3.381683791319967E-11 peri 7.339822998863284E-14 -1.753014566022872E-13 1.097454664654711E-10 -1.594364059103271E-9 1.636308063503809E-9 -3.350113150393574E-11 i -1.053196652502928E-15 2.575844690122307E-15 5.153232579322738E-13 3.381683791319967E-11 -3.350113150393574E-11 2.182267868171648E-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 16.4   n/a MPO436473   101328 (1998 SJ162)          Discovered 1998-Sep-26 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last 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 ] 2021-Jan-15 21:23 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin