+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   268218 (2005 CX39) Classification: Main-belt Asteroid          SPK-ID: 2268218 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1520439339265575 5.1995e-08   a 3.108952737345657 2.7689e-08 au q 2.636255332767884 1.6208e-07 au i 1.921524730899679 5.4336e-06 deg node 133.1047164713352 0.00015304 deg peri 244.1552427975339 0.00015492 deg M 64.29303769723063 1.9773e-05 deg tp 2458842.913551759204 (2019-Dec-25.41355176) 0.00011022 TDB period 2002.256013674581 5.48 2.6749e-05 7.323e-08 d yr n .1797971875431258 2.402e-09 deg/d Q 3.58165014192343 3.1899e-08 au   Orbit Determination Parameters    # obs. used (total)      393      data-arc span      6297 days (17.24 yr)      first obs. used      2003-10-23      last obs. used      2021-01-18      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .47567      source      ORB      producer      Otto Matic      solution date      2021-Apr-14 03:22:56   Additional Information  Earth MOID = 1.63724 au   Jupiter MOID = 1.88137 au   T_jup = 3.201  [ hide covariance matrix ] Orbital Elements at Epoch 2457604.5 (2016-Aug-04.0) TDB Reference: JPL 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1512449608537669 5.4194e-08   q 2.642341528344674 1.6952e-07 au tp 2456823.863700284177 (2014-Jun-15.36370028) 0.00011498 TDB node 133.2862031521841 0.00015258 deg peri 241.8491147283212 0.00015448 deg i 1.921924510213106 5.4481e-06 deg   Orbit Determination Parameters    # obs. used (total)      393      data-arc span      6297 days (17.24 yr)      first obs. used      2003-10-23      last obs. used      2021-01-18      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .47567      source      ORB      producer      Otto Matic      solution date      2021-Apr-14 03:22:56   Additional Information  Jupiter MOID = 1.88137 au   T_jup = 3.201  Orbit Covariance (6×6)   e q tp node peri i e 2.936994252938901E-15 -9.099649674823918E-15 -2.617727004462503E-12 2.30970560500337E-14 -6.434142062330257E-13 -1.09685500305804E-15 q -9.099649674823918E-15 2.873540652384958E-14 7.656202849020445E-12 -7.426672035865522E-14 1.958706736609896E-12 3.710300797928182E-15 tp -2.617727004462503E-12 7.656202849020445E-12 1.322132567750294E-8 -6.057385651053428E-11 2.787959170524064E-9 -5.082884277506314E-13 node 2.30970560500337E-14 -7.426672035865522E-14 -6.057385651053428E-11 2.327930020983951E-8 -2.327900405574449E-8 6.733858986766374E-11 peri -6.434142062330257E-13 1.958706736609896E-12 2.787959170524064E-9 -2.327900405574449E-8 2.386284720267552E-8 -6.735467046179724E-11 i -1.09685500305804E-15 3.710300797928182E-15 -5.082884277506314E-13 6.733858986766374E-11 -6.735467046179724E-11 2.968232029962474E-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 16.0   n/a MPO494450   268218 (2005 CX39)          Discovered 2005-Feb-04 by Spacewatch at Kitt Peak Reference: 20110319/Numbers.arc Last Updated: 2011-03-23 [ show close-approach data ] Alternate Designations  2005 CX39 = 2003 UH291  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-16 15:28 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin