+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   100915 (1998 KH49) Classification: Main-belt Asteroid          SPK-ID: 2100915 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1639349008662956 4.9482e-08   a 2.443237098236776 1.4926e-08 au q 2.042705266744475 1.2516e-07 au i 7.878412195531493 7.3911e-06 deg node 196.0712294757149 3.0625e-05 deg peri 51.1412061650527 3.8591e-05 deg M 320.6550588572831 2.3189e-05 deg tp 2459352.952042491058 (2021-May-18.45204249) 9.045e-05 TDB period 1394.912120917988 3.82 1.2783e-05 3.5e-08 d yr n .2580807741229497 2.365e-09 deg/d Q 2.843768929729078 1.7373e-08 au   Orbit Determination Parameters    # obs. used (total)      486      data-arc span      8982 days (24.59 yr)      first obs. used      1995-08-22      last obs. used      2020-03-25      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55996      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 20:03:30   Additional Information  Earth MOID = 1.03907 au   Jupiter MOID = 2.19053 au   T_jup = 3.469  [ 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 16.02   n/a E2021B55   diameter diameter 3.673 km 0.114 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.057   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   100915 (1998 KH49)          Discovered 1998-May-23 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1998 KH49 = 1995 QL15 = 2002 LA42  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-03 03:28 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin