+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   100126 (1993 QK7) Classification: Main-belt Asteroid          SPK-ID: 2100126 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1534807363195776 5.6198e-08   a 2.653320946554957 1.5768e-08 au q 2.246087293985544 1.4682e-07 au i 13.19667904686019 7.4452e-06 deg node 346.2174555305883 2.1324e-05 deg peri 301.4998892340461 3.3123e-05 deg M 156.2735528895902 2.6621e-05 deg tp 2458515.223103171338 (2019-Jan-31.72310317) 0.00011608 TDB period 1578.640008476774 4.32 1.4072e-05 3.853e-08 d yr n .2280443914172448 2.0328e-09 deg/d Q 3.06055459912437 1.8188e-08 au   Orbit Determination Parameters    # obs. used (total)      718      data-arc span      10016 days (27.42 yr)      first obs. used      1993-08-15      last obs. used      2021-01-16      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .50638      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 15:30:43   Additional Information  Earth MOID = 1.25988 au   Jupiter MOID = 2.28534 au   T_jup = 3.335  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.3   n/a MPO493562   diameter diameter 2.786 km 0.544 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.228   0.079 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   100126 (1993 QK7)          Discovered 1993-Aug-20 by Elst, E. W. at La Silla Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 Alternate Designations  1993 QK7 = 2002 TE220  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-20 08:32 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin