+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   17996 (1999 JQ75) Classification: Main-belt Asteroid          SPK-ID: 2017996 [ 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 35 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .0858690314216625 8.6866e-09   a 2.281618427823617 6.6279e-09 au q 2.085698063352587 2.2061e-08 au i 3.910186840543453 8.8379e-07 deg node 232.0502716515242 4.9861e-06 deg peri 68.00823451631362 1.2895e-05 deg M 19.1496604812915 1.4029e-05 deg tp 2459133.539062063520 (2020-Oct-11.03906206) 4.899e-05 TDB period 1258.818018245453 3.45 5.4851e-06 1.502e-08 d yr n .2859825604512477 1.2461e-09 deg/d Q 2.477538792294647 7.197e-09 au   Orbit Determination Parameters    # obs. used (total)      2358      data-arc span      12460 days (34.11 yr)      first obs. used      1986-08-29      last obs. used      2020-10-09      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .45804      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 02:19:20   Additional Information  Earth MOID = 1.07189 au   Jupiter MOID = 2.65863 au   T_jup = 3.597  [ 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 14.09   n/a E2021B10   diameter diameter 4.268 km 0.112 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.293   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   17996 (1999 JQ75)          Discovered 1999-May-10 by LINEAR at Socorro Reference: 20001013/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1999 JQ75 = 1986 QO5 = 1986 RX17  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-21 01:53 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin