+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   85243 (1993 QG8) Classification: Main-belt Asteroid          SPK-ID: 2085243 [ 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 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2396694829758992 5.884e-08   a 3.189476630690112 2.9345e-08 au q 2.4250564156489 1.9423e-07 au i 9.297029400626585 5.1601e-06 deg node 151.76443668805 3.6799e-05 deg peri 258.3996455014222 3.7901e-05 deg M 217.7965427728883 1.0503e-05 deg tp 2459822.336106761001 (2022-Aug-30.83610676) 6.7361e-05 TDB period 2080.54715548472 5.70 2.8714e-05 7.861e-08 d yr n .1730314062101266 2.388e-09 deg/d Q 3.953896845731324 3.6379e-08 au   Orbit Determination Parameters    # obs. used (total)      514      data-arc span      9419 days (25.79 yr)      first obs. used      1993-08-15      last obs. used      2019-05-30      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53324      source      ORB      producer      Otto Matic      solution date      2020-Feb-23 20:28:39   Additional Information  Earth MOID = 1.45614 au   Jupiter MOID = 1.58843 au   T_jup = 3.132  [ 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 14.9   n/a MPO436372   diameter diameter 3.077 km 0.801 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.204   0.116 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   85243 (1993 QG8)          Discovered 1993-Aug-20 by Elst, E. W. at La Silla Reference: 20040830/Numbers.arc Last Updated: 2004-09-06 [ show close-approach data ] Alternate Designations  1993 QG8 = 1999 TL245  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-25 12:58 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin