+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   101246 (1998 SS87) Classification: Main-belt Asteroid          SPK-ID: 2101246 [ 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 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1752472861942853 4.6543e-08   a 2.341957760433653 1.1274e-08 au q 1.931536018536009 1.077e-07 au i 1.730611963622427 4.5101e-06 deg node 283.7549467899951 0.00017674 deg peri 117.1399058105699 0.00017734 deg M 353.0777226530178 1.366e-05 deg tp 2459025.671755726978 (2020-Jun-25.17175573) 4.971e-05 TDB period 1309.082489401071 3.58 9.4527e-06 2.588e-08 d yr n .2750017687309427 1.9857e-09 deg/d Q 2.752379502331297 1.325e-08 au   Orbit Determination Parameters    # obs. used (total)      443      data-arc span      8096 days (22.17 yr)      first obs. used      1998-09-15      last obs. used      2020-11-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .58947      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 22:28:58   Additional Information  Earth MOID = .940513 au   Jupiter MOID = 2.65274 au   T_jup = 3.542  [ 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 16.5   n/a MPO436472   diameter diameter 3.039 km 0.062 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.048   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   101246 (1998 SS87)          Discovered 1998-Sep-26 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 1935-Dec-09 12:08 00:10 Amphi 0.049143534245449 0.0491322478221141 0.0491548210699869 2.04746238478961 2.04746232765613 2428146.005787053 9.56849766946911 603.742301420679 33.4581564989987 -21.5404370209561 81306.6799253135 T 20 CATAB v2.0f-lin.ifort 2020-Dec-17 22:29:00 2020-Dec-17 22:29 Alternate Designations  1998 SS87 = 2002 YZ24  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-16 16:17 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin