+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   441814 (2009 KP23) Classification: Main-belt Asteroid          SPK-ID: 2441814 [ 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 9 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09309534853263371 6.0958e-08   a 3.015921076843876 6.4715e-08 au q 2.735152853048179 1.7944e-07 au i 11.31413633484731 6.1101e-06 deg node 93.88954030980331 3.8259e-05 deg peri 222.5934820080013 5.6878e-05 deg M 326.5827579743071 4.5404e-05 deg tp 2459178.080996502779 (2020-Nov-24.58099650) 0.00024427 TDB period 1913.059093621448 5.24 6.1575e-05 1.686e-07 d yr n .1881802821461803 6.0569e-09 deg/d Q 3.296689300639573 7.0739e-08 au   Orbit Determination Parameters    # obs. used (total)      120      data-arc span      4530 days (12.40 yr)      first obs. used      2006-12-10      last obs. used      2019-05-06      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57183      source      ORB      producer      Otto Matic      solution date      2019-May-30 10:13:04   Additional Information  Earth MOID = 1.73272 au   Jupiter MOID = 1.94347 au   T_jup = 3.212  [ hide covariance matrix ] Orbital Elements at Epoch 2457370.5 (2015-Dec-14.0) TDB Reference: JPL 9 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09226564257703004 6.135e-08   q 2.735672380152086 1.7978e-07 au tp 2457274.345730143152 (2015-Sep-08.84573014) 0.00021884 TDB node 93.90119392963732 3.8283e-05 deg peri 223.8723715458594 5.6991e-05 deg i 11.31247808689688 6.1106e-06 deg   Orbit Determination Parameters    # obs. used (total)      120      data-arc span      4530 days (12.40 yr)      first obs. used      2006-12-10      last obs. used      2019-05-06      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57183      source      ORB      producer      Otto Matic      solution date      2019-May-30 10:13:04   Additional Information  Jupiter MOID = 1.94347 au   T_jup = 3.212  Orbit Covariance (6×6)   e q tp node peri i e 3.763770734652489E-15 -1.045073382064063E-14 3.713112027094044E-12 5.252188849369247E-14 8.025280349040421E-13 2.958734575084705E-15 q -1.045073382064063E-14 3.231926936143216E-14 -7.290509939614767E-12 -1.499153707547189E-13 -1.619242998759338E-12 7.611115259193361E-16 tp 3.713112027094044E-12 -7.290509939614767E-12 4.789149246576365E-8 1.622228919299209E-11 9.326917737682418E-9 3.800678093076194E-11 node 5.252188849369247E-14 -1.499153707547189E-13 1.622228919299209E-11 1.465564044082698E-9 -1.431571475535552E-9 -4.776015833074843E-11 peri 8.025280349040421E-13 -1.619242998759338E-12 9.326917737682418E-9 -1.431571475535552E-9 3.247944386089788E-9 5.420862149397857E-11 i 2.958734575084705E-15 7.611115259193361E-16 3.800678093076194E-11 -4.776015833074843E-11 5.420862149397857E-11 3.733950231806082E-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 16.1   n/a MPO434639   441814 (2009 KP23)          Discovered 2009-Mar-31 by Mt. Lemmon Survey at Mount Lemmon Reference: Last Updated: 2015-09-02 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Jul-16 18:26 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin