+ 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 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2644308077688987 3.9508e-08   a 2.601097222399571 9.0847e-09 au q 1.913286982795014 1.034e-07 au i 6.401355491000035 5.6263e-06 deg node 33.30112320084123 3.1269e-05 deg peri 51.97400626669153 3.2663e-05 deg M 110.2857157387136 7.9544e-06 deg tp 2458531.092450461283 (2019-Feb-16.59245046) 3.3449e-05 TDB period 1532.262965353532 4.20 8.0275e-06 2.198e-08 d yr n .2349466169581008 1.2309e-09 deg/d Q 3.288907462004129 1.1487e-08 au   Orbit Determination Parameters    # obs. used (total)      1074      data-arc span      8253 days (22.60 yr)      first obs. used      1997-09-23      last obs. used      2020-04-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .50186      source      ORB      producer      Otto Matic      solution date      2020-May-20 17:54:05   Additional Information  Earth MOID = .936948 au   Jupiter MOID = 1.99848 au   T_jup = 3.356  [ hide covariance matrix ] Orbital Elements at Epoch 2457020.5 (2014-Dec-29.0) TDB Reference: JPL 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2642159116519602 3.9465e-08   q 1.914503258599254 1.0323e-07 au tp 2456999.746839649082 (2014-Dec-08.24683965) 3.3549e-05 TDB node 33.33509182360778 3.1288e-05 deg peri 52.26278034538587 3.2685e-05 deg i 6.399284527184907 5.6236e-06 deg   Orbit Determination Parameters    # obs. used (total)      1074      data-arc span      8253 days (22.60 yr)      first obs. used      1997-09-23      last obs. used      2020-04-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .50186      source      ORB      producer      Otto Matic      solution date      2020-May-20 17:54:05   Additional Information  Jupiter MOID = 1.99848 au   T_jup = 3.356  Orbit Covariance (6×6)   e q tp node peri i e 1.557471956602743E-15 -4.065321578181096E-15 -6.097294498872962E-13 9.362712956533335E-15 -1.758827659553313E-13 -2.165535775229792E-15 q -4.065321578181096E-15 1.065670410084967E-14 1.552772298765193E-12 -2.402961735189976E-14 4.490449962632676E-13 5.769840120271355E-15 tp -6.097294498872962E-13 1.552772298765193E-12 1.125520669447166E-9 -6.640538583479857E-12 3.246534446792451E-10 5.441892940455782E-13 node 9.362712956533335E-15 -2.402961735189976E-14 -6.640538583479857E-12 9.789150326884891E-10 -9.74249339881783E-10 3.016314461821E-11 peri -1.758827659553313E-13 4.490449962632676E-13 3.246534446792451E-10 -9.74249339881783E-10 1.068317607198324E-9 -2.981551909661878E-11 i -2.165535775229792E-15 5.769840120271355E-15 5.441892940455782E-13 3.016314461821E-11 -2.981551909661878E-11 3.162497009623418E-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 ] 2020-Aug-11 08:31 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin