+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2387538755435966 5.2737e-08   a 3.192798230355703 2.8777e-08 au q 2.430505279029542 1.7804e-07 au i 9.300687891807753 4.0406e-06 deg node 151.7168032444526 3.3367e-05 deg peri 258.2517411023052 3.4076e-05 deg M 252.5649918508419 1.0381e-05 deg tp 2459822.369072189042 (2022-Aug-30.86907219) 6.5874e-05 TDB period 2083.798101241261 5.71 2.8172e-05 7.713e-08 d yr n .1727614588887272 2.3357e-09 deg/d Q 3.955091181681864 3.5647e-08 au   Orbit Determination Parameters    # obs. used (total)      563      data-arc span      9887 days (27.07 yr)      first obs. used      1993-08-15      last obs. used      2020-09-09      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53019      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 21:01:35   Additional Information  Earth MOID = 1.46066 au   Jupiter MOID = 1.58885 au   T_jup = 3.131  [ 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 14.93   n/a E2021B10   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 ] 2021-Mar-09 05:38 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin