+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11185 (1998 HS100) Classification: Main-belt Asteroid          SPK-ID: 2011185 [ 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 .07563713662006906 3.5926e-08   a 3.06242489637942 1.7284e-08 au q 2.830791846103268 1.0526e-07 au i 2.889906409173623 4.5877e-06 deg node 162.35135391745 7.9742e-05 deg peri 297.8186205195112 8.6017e-05 deg M 160.1968198737287 3.3708e-05 deg tp 2458129.440168860958 (2018-Jan-10.94016886) 0.00018054 TDB period 1957.476680605945 5.36 1.6572e-05 4.537e-08 d yr n .1839102368711542 1.557e-09 deg/d Q 3.29405794665557 1.8592e-08 au   Orbit Determination Parameters    # obs. used (total)      1706      data-arc span      16098 days (44.07 yr)      first obs. used      1976-04-01      last obs. used      2020-04-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51052      source      ORB      producer      Otto Matic      solution date      2020-May-20 03:30:06   Additional Information  Earth MOID = 1.84917 au   Jupiter MOID = 1.81664 au   T_jup = 3.227  [ 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 13.4   n/a MPO439165   diameter diameter 9.803 km 0.359 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.096   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   11185 (1998 HS100)          Discovered 1998-Apr-21 by LINEAR at Socorro Reference: 19990728/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1998 HS100 = 1976 GD1 = 1992 EX34  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-31 23:48 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin