+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   56123 (1999 CR23) Classification: Main-belt Asteroid          SPK-ID: 2056123 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1245293675009758 4.094e-08   a 2.410138763031549 9.6134e-09 au q 2.110005707281646 9.7345e-08 au i 6.227799837501787 5.5101e-06 deg node 326.7273983438316 2.9047e-05 deg peri 315.6707321116781 3.5808e-05 deg M 112.0857617091042 1.9574e-05 deg tp 2458574.990319255970 (2019-Apr-01.49031926) 7.4636e-05 TDB period 1366.663193719532 3.74 8.1769e-06 2.239e-08 d yr n .2634153035322611 1.576e-09 deg/d Q 2.710271818781452 1.0811e-08 au   Orbit Determination Parameters    # obs. used (total)      1134      data-arc span      8400 days (23.00 yr)      first obs. used      1997-10-30      last obs. used      2020-10-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .551      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 23:00:48   Additional Information  Earth MOID = 1.09892 au   Jupiter MOID = 2.44539 au   T_jup = 3.502  [ hide covariance matrix ] Orbital Elements at Epoch 2457332.5 (2015-Nov-06.0) TDB Reference: JPL 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1246161637882859 4.0936e-08   q 2.110071644195719 9.7449e-08 au tp 2457209.589597813864 (2015-Jul-06.08959781) 7.6288e-05 TDB node 326.7908956713031 2.9043e-05 deg peri 315.9802230059561 3.5791e-05 deg i 6.227999715767218 5.5107e-06 deg   Orbit Determination Parameters    # obs. used (total)      1134      data-arc span      8400 days (23.00 yr)      first obs. used      1997-10-30      last obs. used      2020-10-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .551      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 23:00:48   Additional Information  Jupiter MOID = 2.44539 au   T_jup = 3.502  Orbit Covariance (6×6)   e q tp node peri i e 1.675789898494452E-15 -3.974630966986333E-15 1.355873081157035E-12 -3.710648886996892E-15 3.328635457465235E-13 -3.857780930673E-15 q -3.974630966986333E-15 9.49631287905337E-15 -3.440853687199698E-12 8.3768852095653E-15 -8.496832597298987E-13 9.498461006676202E-15 tp 1.355873081157035E-12 -3.440853687199698E-12 5.819889095955555E-9 2.088168555011842E-12 1.599838673351344E-9 -7.865354219718903E-12 node -3.710648886996892E-15 8.3768852095653E-15 2.088168555011842E-12 8.434683090550753E-10 -8.371566073286369E-10 2.956972084697234E-11 peri 3.328635457465235E-13 -8.496832597298987E-13 1.599838673351344E-9 -8.371566073286369E-10 1.281013100070053E-9 -3.150481401185236E-11 i -3.857780930673E-15 9.498461006676202E-15 -7.865354219718903E-12 2.956972084697234E-11 -3.150481401185236E-11 3.036788476034319E-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.0   n/a MPO449363   56123 (1999 CR23)          Discovered 1999-Feb-10 by LINEAR at Socorro Reference: 20030318/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1999 CR23 = 2001 TM35  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-19 01:21 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin