+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   100579 (1997 HS11) Classification: Main-belt Asteroid          SPK-ID: 2100579 [ 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 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1927002351213209 7.0357e-08   a 2.593400214330131 1.9844e-08 au q 2.093651383265031 1.761e-07 au i 13.50239795297994 6.5352e-06 deg node 37.32768962160095 2.4927e-05 deg peri 275.1077557160602 3.4353e-05 deg M 169.8650733776087 3.0771e-05 deg tp 2458480.712449544582 (2018-Dec-28.21244954) 0.00012472 TDB period 1525.466730808875 4.18 1.7508e-05 4.793e-08 d yr n .2359933473010656 2.7086e-09 deg/d Q 3.093149045395232 2.3668e-08 au   Orbit Determination Parameters    # obs. used (total)      415      data-arc span      8663 days (23.72 yr)      first obs. used      1997-04-30      last obs. used      2021-01-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .63247      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 08:25:42   Additional Information  Earth MOID = 1.13047 au   Jupiter MOID = 2.34119 au   T_jup = 3.354  [ 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 15.7   n/a MPO359459   diameter diameter 1.861 km 0.352 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.322   0.158 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   100579 (1997 HS11)          Discovered 1997-Apr-30 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1997 HS11 = 2002 SM32  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-05 17:26 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin