+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   78449 (2002 RU23) Classification: Main-belt Asteroid          SPK-ID: 2078449 [ 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 .137771662834602 4.6842e-08   a 2.680310376971854 1.3758e-08 au q 2.311039559423603 1.2161e-07 au i 4.829479095443387 5.0497e-06 deg node 344.8297757137637 5.3547e-05 deg peri 18.94327259685368 5.6697e-05 deg M .2601116324916053 1.706e-05 deg tp 2458999.341933943198 (2020-May-29.84193394) 7.5954e-05 TDB period 1602.787912463008 4.39 1.234e-05 3.379e-08 d yr n .2246086317476572 1.7293e-09 deg/d Q 3.049581194520105 1.5653e-08 au   Orbit Determination Parameters    # obs. used (total)      581      data-arc span      8064 days (22.08 yr)      first obs. used      1998-10-19      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49565      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 22:06:34   Additional Information  Earth MOID = 1.30915 au   Jupiter MOID = 2.4071 au   T_jup = 3.358  [ hide covariance matrix ] Orbital Elements at Epoch 2457219.5 (2015-Jul-16.0) TDB Reference: JPL 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1404314859468241 4.7067e-08   q 2.304000448871886 1.2267e-07 au tp 2457395.608392616035 (2016-Jan-08.10839262) 7.2564e-05 TDB node 345.0164324468383 5.3471e-05 deg peri 18.71034951782061 5.6458e-05 deg i 4.834106900950144 5.0562e-06 deg   Orbit Determination Parameters    # obs. used (total)      581      data-arc span      8064 days (22.08 yr)      first obs. used      1998-10-19      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49565      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 22:06:34   Additional Information  Jupiter MOID = 2.4071 au   T_jup = 3.358  Orbit Covariance (6×6)   e q tp node peri i e 2.215347761084869E-15 -5.750760290583596E-15 3.642688549867373E-13 -5.420243589307158E-15 7.352480602467227E-14 -2.665784860089198E-15 q -5.750760290583596E-15 1.504810295923511E-14 -9.733082782430753E-13 1.469329223132176E-14 -2.02471110973087E-13 7.214393993917855E-15 tp 3.642688549867373E-13 -9.733082782430753E-13 5.265514167647442E-9 1.455056873365979E-11 1.335096914063721E-9 -2.03496159564123E-12 node -5.420243589307158E-15 1.469329223132176E-14 1.455056873365979E-11 2.859140274581545E-9 -2.844583677747032E-9 7.42436812675188E-11 peri 7.352480602467227E-14 -2.02471110973087E-13 1.335096914063721E-9 -2.844583677747032E-9 3.187502705346086E-9 -7.446297265620277E-11 i -2.665784860089198E-15 7.214393993917855E-15 -2.03496159564123E-12 7.42436812675188E-11 -7.446297265620277E-11 2.556491146077817E-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 15.6   n/a MPO436330   78449 (2002 RU23)          Discovered 2002-Sep-04 by LONEOS at Anderson Mesa Reference: 20040415/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  2002 RU23 = 2000 EP142  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-15 21:40 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin