+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   100986 (1998 QB33) Classification: Main-belt Asteroid          SPK-ID: 2100986 [ 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 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1708686823799729 4.2494e-08   a 2.32953749122625 8.7415e-09 au q 1.931492489545673 9.9996e-08 au i 2.207022442986958 4.8175e-06 deg node 216.0939354623255 0.00013215 deg peri 85.00867293760562 0.00013302 deg M 123.3340263831991 1.5901e-05 deg tp 2458755.578500383432 (2019-Sep-29.07850038) 5.6414e-05 TDB period 1298.682484947914 3.56 7.3098e-06 2.001e-08 d yr n .2772040157409519 1.5603e-09 deg/d Q 2.727582492906827 1.0235e-08 au   Orbit Determination Parameters    # obs. used (total)      432      data-arc span      8177 days (22.39 yr)      first obs. used      1998-08-17      last obs. used      2021-01-05      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .63055      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 08:26:43   Additional Information  Earth MOID = .915548 au   Jupiter MOID = 2.48683 au   T_jup = 3.551  [ 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 16.5   n/a MPO436470   diameter diameter 2.806 km 0.241 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.047   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   100986 (1998 QB33)          Discovered 1998-Aug-17 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1998 QB33 = 2001 HO51  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-03 03:21 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin