+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2001 XX4) Classification: Apollo [NEO, PHA]          SPK-ID: 3102683 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .5568371529375858 3.2403e-06   a 1.006492931216528 2.3067e-08 au q .446040272946111 3.27e-06 au i .8484623656664644 6.8004e-05 deg node 127.0738627372168 0.0041556 deg peri 186.8238365169017 0.00406 deg M 164.3357016412561 0.00027386 deg tp 2458832.138051562011 (2019-Dec-14.63805156) 0.00028097 TDB period 368.8200484273834 1.01 1.2679e-05 3.471e-08 d yr n .9760857673952613 3.3555e-08 deg/d Q 1.566945589486945 3.5911e-08 au   Orbit Determination Parameters    # obs. used (total)      102      data-arc span      388 days (1.06 yr)      first obs. used      2001-12-11      last obs. used      2003-01-03      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      1      norm. resid. RMS      .55659      source      ORB      producer      Otto Matic      solution date      2017-Apr-06 09:15:45   Additional Information  Earth MOID = .0113235 au   Jupiter MOID = 3.736 au   T_jup = 5.900  [ 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 22.1   n/a MPO74111   [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Jan-18 18:17 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin