+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   120006 (2002 YK31) Classification: Main-belt Asteroid          SPK-ID: 2120006 [ 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 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1400531806871654 4.2529e-08   a 2.388641175162713 9.251e-09 au q 2.054104381060847 1.0428e-07 au i .6246310943281297 4.1643e-06 deg node 137.8676475811336 0.00041835 deg peri 358.5574806428424 0.0004187 deg M 291.9020055042714 1.7678e-05 deg tp 2459455.568377523568 (2021-Aug-29.06837752) 6.6838e-05 TDB period 1348.418798357478 3.69 7.8334e-06 2.145e-08 d yr n .2669793690495264 1.551e-09 deg/d Q 2.723177969264579 1.0547e-08 au   Orbit Determination Parameters    # obs. used (total)      536      data-arc span      9606 days (26.30 yr)      first obs. used      1994-10-26      last obs. used      2021-02-12      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .56891      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 17:04:30   Additional Information  Earth MOID = 1.06776 au   Jupiter MOID = 2.30157 au   T_jup = 3.520  [ show covariance matrix ] [ 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 16.70   n/a E2021B55   120006 (2002 YK31)          Discovered 2002-Dec-31 by LINEAR at Socorro Reference: 20051116/Numbers.arc Last Updated: 2005-11-21 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 2119-Aug-04 02:27 00:11 Psych 0.0301857693524834 0.030183198767849 0.0301883450809306 2.88607772752521 2.88607758864419 2495223.602163472 10.6543736576406 689.359055057456 51.4875132317729 -80.1898466223241 86279.6111090342 T 17 CATAB v2.0f-lin.ifort 2021-Apr-13 17:04:32 2021-Apr-13 17:04 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-14 21:50 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin