+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   101515 (1998 XG27) Classification: Main-belt Asteroid          SPK-ID: 2101515 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 24 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09573738003211195 6.5869e-08   a 2.593074812158058 1.556e-08 au q 2.344820623414785 1.7046e-07 au i 28.16554186591307 6.3423e-06 deg node 268.3789405505824 1.1644e-05 deg peri 205.0335147462132 3.5901e-05 deg M 37.00199272382815 3.0715e-05 deg tp 2458843.736984309790 (2019-Dec-26.23698431) 0.00013019 TDB period 1525.179632072446 4.18 1.3728e-05 3.759e-08 d yr n .2360377705220364 2.1246e-09 deg/d Q 2.841329000901331 1.705e-08 au   Orbit Determination Parameters    # obs. used (total)      900      data-arc span      7816 days (21.40 yr)      first obs. used      1998-11-23      last obs. used      2020-04-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .47903      source      ORB      producer      Otto Matic      solution date      2020-May-20 18:00:12   Additional Information  Earth MOID = 1.37423 au   Jupiter MOID = 2.40451 au   T_jup = 3.246  [ 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 14.6   n/a MPO453468   diameter diameter 6.697 km 0.127 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.090   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   101515 (1998 XG27)          Discovered 1998-Dec-15 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1998 XG27 = 2001 RX15  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Dec-03 05:52 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin