+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   85993 (1999 JU28) Classification: Main-belt Asteroid          SPK-ID: 2085993 [ 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 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1630449149565012 3.5224e-08   a 2.741620855201423 1.6687e-08 au q 2.294613516022137 9.6323e-08 au i 2.4910269984554 4.2529e-06 deg node 313.6871525148696 9.7957e-05 deg peri 325.3304816929394 9.889e-05 deg M 190.7333705855611 1.4901e-05 deg tp 2459780.111730122481 (2022-Jul-19.61173012) 7.1021e-05 TDB period 1658.095419132581 4.54 1.5138e-05 4.145e-08 d yr n .217116575949731 1.9823e-09 deg/d Q 3.188628194380709 1.9408e-08 au   Orbit Determination Parameters    # obs. used (total)      641      data-arc span      10603 days (29.03 yr)      first obs. used      1991-10-10      last obs. used      2020-10-20      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55214      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 20:59:03   Additional Information  Earth MOID = 1.27871 au   Jupiter MOID = 1.94981 au   T_jup = 3.329  [ hide covariance matrix ] Orbital Elements at Epoch 2457020.5 (2014-Dec-29.0) TDB Reference: JPL 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1648968529986765 3.5143e-08   q 2.287506702431101 9.6185e-08 au tp 2456465.603385785741 (2013-Jun-22.10338579) 6.5069e-05 TDB node 313.8217216962518 9.7738e-05 deg peri 325.2573287229538 9.8653e-05 deg i 2.495679614153844 4.2579e-06 deg   Orbit Determination Parameters    # obs. used (total)      641      data-arc span      10603 days (29.03 yr)      first obs. used      1991-10-10      last obs. used      2020-10-20      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55214      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 20:59:03   Additional Information  Jupiter MOID = 1.94981 au   T_jup = 3.329  Orbit Covariance (6×6)   e q tp node peri i e 1.235064431891154E-15 -3.345256204670863E-15 1.254889997724075E-13 2.206087953005834E-15 1.88088911869435E-14 -2.44243640302452E-17 q -3.345256204670863E-15 9.25152900637312E-15 -3.961070115688486E-13 -7.188714421658542E-15 -4.796455699803489E-14 2.274834143036112E-16 tp 1.254889997724075E-13 -3.961070115688486E-13 4.233963870070624E-9 2.708659279538672E-12 8.922402568049416E-10 -6.365702707527702E-14 node 2.206087953005834E-15 -7.188714421658542E-15 2.708659279538672E-12 9.552706741718997E-9 -9.542829013841364E-9 4.260184987364683E-11 peri 1.88088911869435E-14 -4.796455699803489E-14 8.922402568049416E-10 -9.542829013841364E-9 9.732438121096669E-9 -4.257041122824755E-11 i -2.44243640302452E-17 2.274834143036112E-16 -6.365702707527702E-14 4.260184987364683E-11 -4.257041122824755E-11 1.812941261805486E-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 15.4   n/a MPO453291   85993 (1999 JU28)          Discovered 1999-May-10 by LINEAR at Socorro Reference: 20040830/Numbers.arc Last Updated: 2004-09-06 [ show close-approach data ] Alternate Designations  1999 JU28 = 2000 SZ101  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-17 11:09 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin