+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   100912 (1998 KU26) Classification: Main-belt Asteroid          SPK-ID: 2100912 [ 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 24 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1258484414293998 4.8149e-08   a 3.165538069558078 2.67e-08 au q 2.767160037218763 1.5076e-07 au i 23.81435077615324 6.9235e-06 deg node 37.69518501177792 1.1204e-05 deg peri 34.35342221292672 2.655e-05 deg M 141.3831062804881 2.3317e-05 deg tp 2458392.586702066104 (2018-Oct-01.08670207) 0.00013155 TDB period 2057.16789585307 5.63 2.6027e-05 7.126e-08 d yr n .1749978699967581 2.214e-09 deg/d Q 3.563916101897393 3.006e-08 au   Orbit Determination Parameters    # obs. used (total)      1044      data-arc span      11427 days (31.29 yr)      first obs. used      1989-10-30      last obs. used      2021-02-11      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .50707      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 15:34:20   Additional Information  Earth MOID = 1.80259 au   Jupiter MOID = 1.93515 au   T_jup = 3.060  [ hide covariance matrix ] Orbital Elements at Epoch 2457324.5 (2015-Oct-29.0) TDB Reference: JPL 24 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1264114721197611 4.7889e-08   q 2.765546535099598 1.4994e-07 au tp 2456337.781980304268 (2013-Feb-14.28198030) 0.00013083 TDB node 37.72152648534223 1.1205e-05 deg peri 34.99218309000008 2.6539e-05 deg i 23.814081928543 6.923e-06 deg   Orbit Determination Parameters    # obs. used (total)      1044      data-arc span      11427 days (31.29 yr)      first obs. used      1989-10-30      last obs. used      2021-02-11      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .50707      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 15:34:20   Additional Information  Jupiter MOID = 1.93515 au   T_jup = 3.060  Orbit Covariance (6×6)   e q tp node peri i e 2.293347878397149E-15 -7.095393736621286E-15 -2.484123073900851E-12 1.019275015428864E-14 -4.779908073222583E-13 -5.525472492615282E-15 q -7.095393736621286E-15 2.248189937810961E-14 7.629637292295209E-12 -3.051986703970789E-14 1.51870620023983E-12 1.974645348100753E-14 tp -2.484123073900851E-12 7.629637292295209E-12 1.711623681886547E-8 -1.164542192031712E-11 3.153412915419726E-9 -2.101913435581858E-12 node 1.019275015428864E-14 -3.051986703970789E-14 -1.164542192031712E-11 1.25554716807353E-10 -1.166253353016058E-10 -1.858541402019E-11 peri -4.779908073222583E-13 1.51870620023983E-12 3.153412915419726E-9 -1.166253353016058E-10 7.043088520124314E-10 1.693282498157949E-11 i -5.525472492615282E-15 1.974645348100753E-14 -2.101913435581858E-12 -1.858541402019E-11 1.693282498157949E-11 4.792853866417388E-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 13.77   n/a E2021B55   100912 (1998 KU26)          Discovered 1998-May-28 by Spacewatch at Kitt Peak 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-Apr-22 21:27 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin