+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   120827 (1998 HZ115) Classification: Main-belt Asteroid          SPK-ID: 2120827 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07119603367711111 5.2083e-08   a 2.784025853326223 2.6563e-08 au q 2.585814254914861 1.5183e-07 au i 8.000065717494378 5.2751e-06 deg node 123.0501433532458 3.9371e-05 deg peri 85.94957564773374 5.6372e-05 deg M 276.7568802874173 4.4578e-05 deg tp 2459392.832395495295 (2021-Jun-27.33239550) 0.00021301 TDB period 1696.712747743848 4.65 2.4283e-05 6.648e-08 d yr n .212174983938029 3.0366e-09 deg/d Q 2.982237451737585 2.8454e-08 au   Orbit Determination Parameters    # obs. used (total)      451      data-arc span      7929 days (21.71 yr)      first obs. used      1998-04-21      last obs. used      2020-01-05      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55709      source      ORB      producer      Otto Matic      solution date      2020-Jan-29 17:04:59   Additional Information  Earth MOID = 1.59637 au   Jupiter MOID = 2.02382 au   T_jup = 3.314  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.2   n/a MPO453678   diameter diameter 4.535 km 0.360 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.103   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   120827 (1998 HZ115)          Discovered 1998-Apr-23 by LINEAR at Socorro Reference: 20060314/Numbers.arc Last Updated: 2006-03-23 Alternate Designations  1998 HZ115 = 2002 AG151  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Nov-01 02:32 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin