+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07105266379815765 5.1823e-08   a 2.78372599126134 2.343e-08 au q 2.585934844298055 1.4963e-07 au i 8.000178258320666 5.2034e-06 deg node 123.050077976724 3.8867e-05 deg peri 85.98806249011356 5.3827e-05 deg M 319.1440138579013 4.0192e-05 deg tp 2459393.026869955388 (2021-Jun-27.52686996) 0.00019035 TDB period 1696.438630629988 4.64 2.1417e-05 5.864e-08 d yr n .2122092679923887 2.6791e-09 deg/d Q 2.981517138224625 2.5094e-08 au   Orbit Determination Parameters    # obs. used (total)      462      data-arc span      8314 days (22.76 yr)      first obs. used      1998-04-21      last obs. used      2021-01-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55479      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 19:37:25   Additional Information  Earth MOID = 1.59553 au   Jupiter MOID = 2.02344 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 ] 2021-Mar-07 07:25 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin