+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   17493 Wildcat (1991 YA) Classification: Mars-crossing Asteroid          SPK-ID: 2017493 [ 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 8 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .4421342771872787 1.5744e-07   a 2.736365473111338 1.5468e-08 au q 1.52652450253703 4.376e-07 au i 44.37731284789021 1.0673e-05 deg node 274.1778780734747 1.4498e-05 deg peri 175.0107548957865 2.897e-05 deg M 96.30965345311556 1.2198e-05 deg tp 2458558.189856472783 (2019-Mar-15.68985647) 5.4851e-05 TDB period 1653.330127984663 4.53 1.4019e-05 3.838e-08 d yr n .2177423576251067 1.8463e-09 deg/d Q 3.946206443685645 2.2307e-08 au   Orbit Determination Parameters    # obs. used (total)      706      data-arc span      9981 days (27.33 yr)      first obs. used      1991-12-02      last obs. used      2019-03-31      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .46489      source      ORB      producer      Otto Matic      solution date      2019-Jul-12 22:20:18   Additional Information  Earth MOID = .544565 au   Jupiter MOID = 1.2982 au   T_jup = 2.831  [ 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 14.6   n/a MPO467893   17493 Wildcat           Discovered 1991 Dec. 31 by C. S. Shoemaker and D. H. Levy at Palomar. The University of Arizona (whose athletic symbol is a wildcat) has contributed to astronomy and planetary sciences almost from its founding in 1885. Today the university remains in the forefront of astronomical research, discovery and in astronomical instrument development. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20030501/MPCPages.arc Last Updated: 2003-10-02 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-24 13:21 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin