+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   190417 (1999 UU12) Classification: Main-belt Asteroid          SPK-ID: 2190417 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2466455480739957 5.2591e-08   a 2.710289094058936 1.2768e-08 au q 2.041808355015796 1.423e-07 au i 8.717465868884606 6.2045e-06 deg node 357.6739055036655 3.0492e-05 deg peri 59.68824392638267 3.3422e-05 deg M 242.2069967153625 1.0334e-05 deg tp 2459733.759802179684 (2022-Jun-03.25980218) 4.774e-05 TDB period 1629.75324027351 4.46 1.1517e-05 3.153e-08 d yr n .2208923357867254 1.5609e-09 deg/d Q 3.378769833102076 1.5918e-08 au   Orbit Determination Parameters    # obs. used (total)      588      data-arc span      7181 days (19.66 yr)      first obs. used      1999-09-05      last obs. used      2019-05-04      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52859      source      ORB      producer      Otto Matic      solution date      2020-Feb-24 21:19:17   Additional Information  Earth MOID = 1.06839 au   Jupiter MOID = 2.08996 au   T_jup = 3.303  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.7   n/a MPO470053   190417 (1999 UU12)          Discovered 1999-Oct-29 by CSS at Catalina Reference: 20080917/Numbers.arc Last Updated: 2008-09-19 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-12 02:22 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin