+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1914721764961967 3.8717e-08   a 2.669157899283572 1.2741e-08 au q 2.15808842689573 1.0454e-07 au i 1.936045350124739 4.2783e-06 deg node 280.4690053221737 0.00015048 deg peri 49.35383337691791 0.00015103 deg M .1009284037706865 1.3473e-05 deg tp 2459000.053449345767 (2020-May-30.55344935) 5.961e-05 TDB period 1592.794788364142 4.36 1.1405e-05 3.123e-08 d yr n .2260178163752866 1.6184e-09 deg/d Q 3.180227371671414 1.5181e-08 au   Orbit Determination Parameters    # obs. used (total)      785      data-arc span      14206 days (38.89 yr)      first obs. used      1981-10-30      last obs. used      2020-09-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57019      source      ORB      producer      Otto Matic      solution date      2020-Oct-22 19:37:12   Additional Information  Earth MOID = 1.14769 au   Jupiter MOID = 2.17792 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 15.3   n/a MPO291094   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 ] 2020-Oct-24 04:40 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin