+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   379271 (2009 UG98) Classification: Main-belt Asteroid          SPK-ID: 2379271 [ 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 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07781619177769797 4.9889e-08   a 2.562709184529044 2.9039e-08 au q 2.363288915155263 1.3497e-07 au i 4.575059611477099 1.4408e-05 deg node 202.9051415554026 7.9548e-05 deg peri 260.1831223347174 0.00022025 deg M 158.2432320177767 0.00019381 deg tp 2458341.826700803358 (2018-Aug-11.32670080) 0.00080523 TDB period 1498.467799773916 4.10 2.547e-05 6.973e-08 d yr n .2402454027068954 4.0835e-09 deg/d Q 2.762129453902824 3.1299e-08 au   Orbit Determination Parameters    # obs. used (total)      101      data-arc span      4897 days (13.41 yr)      first obs. used      2005-10-31      last obs. used      2019-03-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .48869      source      ORB      producer      Otto Matic      solution date      2019-Jul-14 13:41:50   Additional Information  Earth MOID = 1.38536 au   Jupiter MOID = 2.34312 au   T_jup = 3.425  [ hide covariance matrix ] Orbital Elements at Epoch 2457070.5 (2015-Feb-17.0) TDB Reference: JPL 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07919756459105656 5.0193e-08   q 2.359027528630834 1.3681e-07 au tp 2456845.572552845462 (2014-Jul-07.07255285) 0.00078622 TDB node 202.9445840865385 7.9543e-05 deg peri 260.2938865070723 0.00021626 deg i 4.57561207303698 1.4411e-05 deg   Orbit Determination Parameters    # obs. used (total)      101      data-arc span      4897 days (13.41 yr)      first obs. used      2005-10-31      last obs. used      2019-03-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .48869      source      ORB      producer      Otto Matic      solution date      2019-Jul-14 13:41:50   Additional Information  Jupiter MOID = 2.34312 au   T_jup = 3.425  Orbit Covariance (6×6)   e q tp node peri i e 2.519370091680797E-15 -6.736648466241096E-15 9.033634262326695E-12 -1.346541218452382E-14 2.296136773497793E-12 -8.456538352049356E-15 q -6.736648466241096E-15 1.871801725300145E-14 -2.303688544313477E-11 3.212960315891193E-14 -5.831742540164853E-12 2.242688897489952E-14 tp 9.033634262326695E-12 -2.303688544313477E-11 6.181482523212343E-7 -7.067909422757755E-10 1.581323877191703E-7 -4.017299827673567E-10 node -1.346541218452382E-14 3.212960315891193E-14 -7.067909422757755E-10 6.327159243682909E-9 -6.486629077808643E-9 -5.239322826947655E-10 peri 2.296136773497793E-12 -5.831742540164853E-12 1.581323877191703E-7 -6.486629077808643E-9 4.676626240725136E-8 4.201541811505077E-10 i -8.456538352049356E-15 2.242688897489952E-14 -4.017299827673567E-10 -5.239322826947655E-10 4.201541811505077E-10 2.076670940272046E-10 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 17.3   n/a MPO471889   379271 (2009 UG98)          Discovered 2009-Oct-23 by Mt. Lemmon Survey at Mount Lemmon Reference: Last Updated: 2013-11-20 Alternate Designations  2009 UG98 = 2005 UN410 = 2007 EZ174  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-19 16:44 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin