+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 26 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07424497006311512 3.5653e-08   a 3.066360215929275 1.7499e-08 au q 2.838698393494879 1.0401e-07 au i 2.892954978014272 4.5164e-06 deg node 162.242263115348 7.8921e-05 deg peri 298.4230409481269 8.5434e-05 deg M 196.3724981250565 3.4299e-05 deg tp 2460091.929461877942 (2023-May-27.42946188) 0.00019009 TDB period 1961.25102809017 5.37 1.6789e-05 4.597e-08 d yr n .183556309133238 1.5713e-09 deg/d Q 3.294022038363672 1.8799e-08 au   Orbit Determination Parameters    # obs. used (total)      1750      data-arc span      16201 days (44.36 yr)      first obs. used      1976-04-01      last obs. used      2020-08-09      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .50749      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 22:34:51   Additional Information  Earth MOID = 1.85688 au   Jupiter MOID = 1.81304 au   T_jup = 3.226  [ 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 13.39   n/a E2021B10   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 ] 2021-May-08 21:04 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin