+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   233912 (2009 NC) Classification: Main-belt Asteroid          SPK-ID: 2233912 [ 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 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1590887308533324 6.7138e-08   a 2.405719554336237 1.9929e-08 au q 2.022996683647841 1.6913e-07 au i 24.00382954894702 6.8625e-06 deg node 230.7507655920882 1.2973e-05 deg peri 161.88316920 2.1658e-05 deg M 336.2711519626578 1.9285e-05 deg tp 2459290.333863648933 (2021-Mar-16.83386365) 7.3661e-05 TDB period 1362.906065339625 3.73 1.6936e-05 4.637e-08 d yr n .2641414615102553 3.2823e-09 deg/d Q 2.788442425024633 2.31e-08 au   Orbit Determination Parameters    # obs. used (total)      333      data-arc span      8139 days (22.28 yr)      first obs. used      1998-10-29      last obs. used      2021-02-09      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .53205      source      ORB      producer      Otto Matic      solution date      2021-Apr-14 01:05:23   Additional Information  Earth MOID = 1.03843 au   Jupiter MOID = 2.64055 au   T_jup = 3.389  [ hide covariance matrix ] Orbital Elements at Epoch 2457551.5 (2016-Jun-12.0) TDB Reference: JPL 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1604667243762262 6.7271e-08   q 2.019134137738781 1.6966e-07 au tp 2457927.604892071183 (2017-Jun-23.10489207) 6.4396e-05 TDB node 230.7992844104384 1.296e-05 deg peri 161.9268248706 2.1497e-05 deg i 24.02385484126305 6.8666e-06 deg   Orbit Determination Parameters    # obs. used (total)      333      data-arc span      8139 days (22.28 yr)      first obs. used      1998-10-29      last obs. used      2021-02-09      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .53205      source      ORB      producer      Otto Matic      solution date      2021-Apr-14 01:05:23   Additional Information  Jupiter MOID = 2.64055 au   T_jup = 3.389  Orbit Covariance (6×6)   e q tp node peri i e 4.525328881519203E-15 -1.136743335152228E-14 -5.194304068144895E-13 -1.195032880406695E-14 -3.378014182459321E-14 2.99485889459166E-15 q -1.136743335152228E-14 2.878346031754712E-14 1.682714590475732E-12 3.101913068835518E-14 1.574471439664078E-13 -6.246232460064141E-15 tp -5.194304068144895E-13 1.682714590475732E-12 4.146795053922806E-9 -1.23628697748506E-11 1.111457806457795E-9 9.63689214170451E-12 node -1.195032880406695E-14 3.101913068835518E-14 -1.23628697748506E-11 1.679724411376601E-10 -1.568094630197315E-10 -1.016463738582862E-11 peri -3.378014182459321E-14 1.574471439664078E-13 1.111457806457795E-9 -1.568094630197315E-10 4.621269522943718E-10 1.22488686381014E-11 i 2.99485889459166E-15 -6.246232460064141E-15 9.63689214170451E-12 -1.016463738582862E-11 1.22488686381014E-11 4.714976647944548E-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 16.08   n/a E2021B55   233912 (2009 NC)          Discovered 2009-Jul-03 by La Sagra at La Sagra Reference: 20100228/Numbers.arc Last Updated: 2010-03-03 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-17 21:45 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin