+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   100858 (1998 HB44) Classification: Main-belt Asteroid          SPK-ID: 2100858 [ 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 23 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1201423222390639 4.7246e-08   a 3.14791978790416 2.8792e-08 au q 2.769721394363053 1.5575e-07 au i 11.66128157487809 6.2865e-06 deg node 35.38526601981253 2.2165e-05 deg peri 212.1034491465778 3.171e-05 deg M 344.9955486410833 2.307e-05 deg tp 2459285.525957716748 (2021-Mar-12.02595772) 0.00013094 TDB period 2040.017595167793 5.59 2.7988e-05 7.663e-08 d yr n .1764690661750835 2.4211e-09 deg/d Q 3.526118181445267 3.2251e-08 au   Orbit Determination Parameters    # obs. used (total)      676      data-arc span      16090 days (44.05 yr)      first obs. used      1976-05-02      last obs. used      2020-05-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53172      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 20:03:52   Additional Information  Earth MOID = 1.76346 au   Jupiter MOID = 1.5129 au   T_jup = 3.165  [ 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 14.64   n/a E2021B55   diameter diameter 7.515 km 0.261 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.060   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   100858 (1998 HB44)          Discovered 1998-Apr-20 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1998 HB44 = 1976 JV10 = 2000 TB68  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-03 03:24 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin