+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   100626 (1997 UE2) Classification: Main-belt Asteroid          SPK-ID: 2100626 [ 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 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2644308061204058 3.8465e-08   a 2.601097222931247 8.8213e-09 au q 1.913286987473989 1.0031e-07 au i 6.401355238980074 5.6226e-06 deg node 33.30113135671767 2.8625e-05 deg peri 51.97399729394362 2.999e-05 deg M 110.2857161178104 7.881e-06 deg tp 2458531.092448703816 (2019-Feb-16.59244870) 3.3047e-05 TDB period 1532.262965823334 4.20 7.7947e-06 2.134e-08 d yr n .2349466168860646 1.1952e-09 deg/d Q 3.288907458388506 1.1154e-08 au   Orbit Determination Parameters    # obs. used (total)      1143      data-arc span      8309 days (22.75 yr)      first obs. used      1997-09-23      last obs. used      2020-06-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .50642      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 20:05:09   Additional Information  Earth MOID = .936948 au   Jupiter MOID = 1.99848 au   T_jup = 3.356  [ hide covariance matrix ] Orbital Elements at Epoch 2457342.5 (2015-Nov-16.0) TDB Reference: JPL 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2645732708161454 3.8358e-08   q 1.913518345853714 1.0008e-07 au tp 2456999.619593804544 (2014-Dec-08.11959380) 3.274e-05 TDB node 33.30936988387874 2.8627e-05 deg peri 52.20548756246689 2.9994e-05 deg i 6.401075017832001 5.6217e-06 deg   Orbit Determination Parameters    # obs. used (total)      1143      data-arc span      8309 days (22.75 yr)      first obs. used      1997-09-23      last obs. used      2020-06-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .50642      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 20:05:09   Additional Information  Jupiter MOID = 1.99848 au   T_jup = 3.356  Orbit Covariance (6×6)   e q tp node peri i e 1.471306732719647E-15 -3.830554283912605E-15 -6.74139442581782E-13 3.96052624014821E-15 -1.977260458140956E-13 -2.071290644523626E-15 q -3.830554283912605E-15 1.001534477885351E-14 1.735381000067468E-12 -1.027906189351368E-14 5.117609607397092E-13 5.493477797305159E-15 tp -6.74139442581782E-13 1.735381000067468E-12 1.071939531382295E-9 -2.398538563846742E-12 2.98732525991207E-10 6.608453262002168E-13 node 3.96052624014821E-15 -1.027906189351368E-14 -2.398538563846742E-12 8.195129983045657E-10 -8.146705132873623E-10 3.04168470428457E-11 peri -1.977260458140956E-13 5.117609607397092E-13 2.98732525991207E-10 -8.146705132873623E-10 8.996677309087103E-10 -3.000725379894794E-11 i -2.071290644523626E-15 5.493477797305159E-15 6.608453262002168E-13 3.04168470428457E-11 -3.000725379894794E-11 3.160375829822281E-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 14.9   n/a MPO469012   100626 (1997 UE2)          Discovered 1997-Oct-21 by Shimizu, Y., Urata, T. at Nachi-Katsuura Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-27 21:14 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin