+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   100988 (1998 QU33) Classification: Main-belt Asteroid          SPK-ID: 2100988 [ 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 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1912888575280773 3.7439e-08   a 2.668658917628732 9.9997e-09 au q 2.158174202143416 9.9371e-08 au i 1.936044077473204 3.3272e-06 deg node 280.4680405977149 0.00014871 deg peri 49.36735255125963 0.0001492 deg M 45.31088565026027 1.1406e-05 deg tp 2459000.081373234714 (2020-May-30.58137323) 5.0343e-05 TDB period 1592.348165348401 4.36 8.95e-06 2.45e-08 d yr n .2260812100230813 1.2707e-09 deg/d Q 3.179143633114047 1.1913e-08 au   Orbit Determination Parameters    # obs. used (total)      1021      data-arc span      14318 days (39.20 yr)      first obs. used      1981-10-30      last obs. used      2021-01-11      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52203      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 08:26:43   Additional Information  Earth MOID = 1.14585 au   Jupiter MOID = 2.17904 au   T_jup = 3.355  [ 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 15.44   n/a E2021B55   diameter diameter 5.233 km 0.391 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.054   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   100988 (1998 QU33)          Discovered 1998-Aug-17 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1998 QU33 = 1981 UE3 = 2003 WV103  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-03 03:43 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin