+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2015 XG55) Classification: Apollo [NEO]          SPK-ID: 3736000 [ 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 4 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .5578543148222568 0.0007336   a 1.029592369187398 0.00059066 au q .4552298235281382 0.00049419 au i 2.364475649026114 0.0044636 deg node 70.30294356424716 0.00010141 deg peri 237.4609655644539 0.0072061 deg M 164.555270338215 1.4463 deg tp 2458826.076219541526 (2019-Dec-08.57621954) 1.383 TDB period 381.589485623836 1.04 0.32837 0.000899 d yr n .9434222209017611 0.00081184 deg/d Q 1.603954914846659 0.00092016 au   Orbit Determination Parameters    # obs. used (total)      28      data-arc span      3 days      first obs. used      2015-12-03      last obs. used      2015-12-06      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      7      norm. resid. RMS      .7181      source      ORB      producer      Otto Matic      solution date      2019-Jul-17 06:10:57   Additional Information  Earth MOID = .00161725 au   Jupiter MOID = 3.67361 au   T_jup = 5.792  [ 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 27.7   n/a MPO358532   [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Jan-18 15:31 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin