+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1592649266350262 6.7456e-08   a 2.406573573104584 2.0426e-08 au q 2.023290809542289 1.6968e-07 au i 24.00390505335842 6.9872e-06 deg node 230.7676737024605 1.3019e-05 deg peri 161.7685616561516 2.1782e-05 deg M 283.5578911630112 1.9273e-05 deg tp 2459290.052487816763 (2021-Mar-16.55248782) 7.518e-05 TDB period 1363.631867303949 3.73 1.7361e-05 4.753e-08 d yr n .2640008704928258 3.3611e-09 deg/d Q 2.789856336666878 2.3679e-08 au   Orbit Determination Parameters    # obs. used (total)      321      data-arc span      8053 days (22.05 yr)      first obs. used      1998-10-29      last obs. used      2020-11-15      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5293      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 00:04:51   Additional Information  Earth MOID = 1.03974 au   Jupiter MOID = 2.63846 au   T_jup = 3.389  [ hide covariance matrix ] Orbital Elements at Epoch 2457472.5 (2016-Mar-25.0) TDB Reference: JPL 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1604626165124799 6.7578e-08   q 2.0190842350824 1.701e-07 au tp 2457927.643116720158 (2017-Jun-23.14311672) 6.5526e-05 TDB node 230.7998981645375 1.3008e-05 deg peri 161.9386807465184 2.1646e-05 deg i 24.02418214146671 6.9916e-06 deg   Orbit Determination Parameters    # obs. used (total)      321      data-arc span      8053 days (22.05 yr)      first obs. used      1998-10-29      last obs. used      2020-11-15      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5293      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 00:04:51   Additional Information  Jupiter MOID = 2.63846 au   T_jup = 3.389  Orbit Covariance (6×6)   e q tp node peri i e 4.566837008935295E-15 -1.14460882016747E-14 -4.467550307603622E-13 -1.28439573917453E-14 -1.887471863937542E-14 2.408785545957729E-15 q -1.14460882016747E-14 2.893272588425193E-14 1.548133662849444E-12 3.335288127074699E-14 1.292854011102412E-13 -4.290935165177164E-15 tp -4.467550307603622E-13 1.548133662849444E-12 4.293715367088466E-9 -1.158873624378271E-11 1.139717566641911E-9 1.13745842078216E-11 node -1.28439573917453E-14 3.335288127074699E-14 -1.158873624378271E-11 1.692098557829425E-10 -1.577396735372446E-10 -8.727205127859302E-12 peri -1.887471863937542E-14 1.292854011102412E-13 1.139717566641911E-9 -1.577396735372446E-10 4.685286682815464E-10 1.132085452325639E-11 i 2.408785545957729E-15 -4.290935165177164E-15 1.13745842078216E-11 -8.727205127859302E-12 1.132085452325639E-11 4.888224392755219E-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 15.9   n/a MPO433528   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-Jan-22 11:00 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin