+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2018 MK) Classification: Apollo [NEO]          SPK-ID: 3825284 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2458280.5 (2018-Jun-11.0) TDB Reference: JPL 4 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .4616605043791813 0.0013714   a 1.774432288807201 0.0044944 au q .9552469833697637 1.4065e-05 au i 26.705330681263 0.041491 deg node 87.67409648402915 0.00042252 deg peri 221.4501696214775 0.030764 deg M 342.1401079850125 0.085036 deg tp 2458323.331560964161 (2018-Jul-23.83156096) 0.041205 TDB period 863.3513536452789 2.36 3.2801 0.00898 d yr n .4169797133924591 0.0015842 deg/d Q 2.593617594244639 0.0065692 au   Orbit Determination Parameters    # obs. used (total)      25      data-arc span      10 days      first obs. used      2018-06-08      last obs. used      2018-06-18      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      8      norm. resid. RMS      .47125      source      ORB      producer      Otto Matic      solution date      2021-Apr-15 20:31:38   Additional Information  Earth MOID = .0188476 au   Jupiter MOID = 2.79624 au   T_jup = 3.858  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 24.3   n/a E2018M39   [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Apr-20 12:04 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin