+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   101819 (1999 JK13) Classification: Main-belt Asteroid          SPK-ID: 2101819 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 23 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2313953249909215 3.5173e-08   a 2.7749986399685 1.5748e-08 au q 2.132876927823624 9.7998e-08 au i 23.67126903120268 6.0917e-06 deg node 76.76626427915059 1.1909e-05 deg peri 71.99276473573626 2.0113e-05 deg M 223.3082837326499 1.7499e-05 deg tp 2459641.609606467173 (2022-Mar-03.10960647) 8.5346e-05 TDB period 1688.467045631136 4.62 1.4373e-05 3.935e-08 d yr n .213211149682483 1.8149e-09 deg/d Q 3.417120352113376 1.9392e-08 au   Orbit Determination Parameters    # obs. used (total)      1182      data-arc span      7951 days (21.77 yr)      first obs. used      1999-02-09      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .44541      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 22:29:40   Additional Information  Earth MOID = 1.26231 au   Jupiter MOID = 2.14482 au   T_jup = 3.176  [ hide covariance matrix ] Orbital Elements at Epoch 2457471.5 (2016-Mar-24.0) TDB Reference: JPL 23 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2298303490980378 3.5443e-08   q 2.13929073070105 9.8756e-08 au tp 2457953.146967708812 (2017-Jul-18.64696771) 7.7935e-05 TDB node 76.78912679941327 1.1915e-05 deg peri 72.16623675798371 2.0164e-05 deg i 23.65592607889601 6.0905e-06 deg   Orbit Determination Parameters    # obs. used (total)      1182      data-arc span      7951 days (21.77 yr)      first obs. used      1999-02-09      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .44541      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 22:29:40   Additional Information  Jupiter MOID = 2.14482 au   T_jup = 3.176  Orbit Covariance (6×6)   e q tp node peri i e 1.256216322354367E-15 -3.473970154394878E-15 4.096610210187437E-13 6.506461791006528E-16 1.147085988338554E-13 6.044192794265553E-15 q -3.473970154394878E-15 9.752739072570918E-15 -6.921109937852698E-13 -2.076728350789848E-15 -2.378235504263767E-13 -1.523902368989154E-14 tp 4.096610210187437E-13 -6.921109937852698E-13 6.073917127566283E-9 -2.845810460064059E-11 1.291333153113555E-9 3.201321745855171E-11 node 6.506461791006528E-16 -2.076728350789848E-15 -2.845810460064059E-11 1.419635599736485E-10 -1.354934932792807E-10 -2.885813073273054E-11 peri 1.147085988338554E-13 -2.378235504263767E-13 1.291333153113555E-9 -1.354934932792807E-10 4.066052215165082E-10 3.308473778355254E-11 i 6.044192794265553E-15 -1.523902368989154E-14 3.201321745855171E-11 -2.885813073273054E-11 3.308473778355254E-11 3.709381915548773E-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.3   n/a MPO493573   101819 (1999 JK13)          Discovered 1999-May-08 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 Alternate Designations  1999 JK13 = 2002 UT29  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-19 03:37 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin