+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2015 KJ122) Classification: Aten [NEO, PHA]          SPK-ID: 3720440 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | 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 .7502664731975752 2.1743e-07   a .7853672854054882 1.7808e-08 au q .1961325420195591 1.6774e-07 au i 5.066014592439169 1.4371e-05 deg node 187.9131632292497 0.00012314 deg peri 229.7803662175188 0.00012046 deg M 195.9924196602957 5.2865e-05 deg tp 2459316.316132307422 (2021-Apr-11.81613231) 4.0708e-05 TDB period 254.2187839386004 0.70 8.6466e-06 2.367e-08 d yr n 1.416103068477222 4.8165e-08 deg/d Q 1.374602028791417 3.1169e-08 au   Orbit Determination Parameters    # obs. used (total)      76      data-arc span      1834 days (5.02 yr)      first obs. used      2015-05-19      last obs. used      2020-05-26      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      1      norm. resid. RMS      .52367      source      ORB      producer      Otto Matic      solution date      2021-Jan-04 05:21:41   Additional Information  Earth MOID = .0318495 au   Jupiter MOID = 3.99559 au   T_jup = 7.137  [ 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 21.92   n/a E2021A14   [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Mar-04 20:28 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin