+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   160971 (2002 CM13) Classification: Main-belt Asteroid          SPK-ID: 2160971 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ 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 .05997174239840412 3.7335e-08   a 2.793790135198607 1.9053e-08 au q 2.626241672895273 1.0543e-07 au i 11.56591109216353 6.02e-06 deg node 316.8356051635887 2.0944e-05 deg peri 276.0508260205143 5.5912e-05 deg M 284.908284663334 5.3011e-05 deg tp 2459556.277615891352 (2021-Dec-07.77761589) 0.00025179 TDB period 1705.646770041856 4.67 1.7449e-05 4.777e-08 d yr n .2110636307136241 2.1591e-09 deg/d Q 2.96133859750194 2.0196e-08 au   Orbit Determination Parameters    # obs. used (total)      530      data-arc span      7409 days (20.28 yr)      first obs. used      2000-12-01      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .58174      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 20:03:34   Additional Information  Earth MOID = 1.64487 au   Jupiter MOID = 2.15705 au   T_jup = 3.296  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.47   n/a E2021B55   160971 (2002 CM13)          Discovered 2002-Feb-08 by Yeung, W. K. Y. at Desert Eagle Reference: 20070828/Numbers.arc Last Updated: 2007-08-30 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-23 18:52 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin