+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   442715 (2012 UQ166) Classification: Mars-crossing Asteroid          SPK-ID: 2442715 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2466878452468998 8.9938e-08   a 2.177537253507313 2.7681e-08 au q 1.640365280494742 2.1068e-07 au i 7.045841963977565 5.7266e-06 deg node 262.6597380959429 5.3276e-05 deg peri 56.53733702388796 5.747e-05 deg M 179.4267122082608 1.6718e-05 deg tp 2458415.532933780147 (2018-Oct-24.03293378) 4.8958e-05 TDB period 1173.672198790095 3.21 2.238e-05 6.127e-08 d yr n .3067295965356543 5.8487e-09 deg/d Q 2.714709226519884 3.451e-08 au   Orbit Determination Parameters    # obs. used (total)      156      data-arc span      6905 days (18.90 yr)      first obs. used      1999-09-07      last obs. used      2018-08-03      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .4835      source      ORB      producer      Otto Matic      solution date      2019-Jul-14 14:52:28   Additional Information  Earth MOID = .639946 au   Jupiter MOID = 2.61685 au   T_jup = 3.634  [ hide covariance matrix ] Orbital Elements at Epoch 2457314.5 (2015-Oct-19.0) TDB Reference: JPL 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .247261227928187 8.9895e-08   q 1.638893759745061 2.1062e-07 au tp 2457242.207186154007 (2015-Aug-07.70718615) 4.4306e-05 TDB node 262.7082844180263 5.3313e-05 deg peri 56.54501401477717 5.7476e-05 deg i 7.043573906553951 5.7258e-06 deg   Orbit Determination Parameters    # obs. used (total)      156      data-arc span      6905 days (18.90 yr)      first obs. used      1999-09-07      last obs. used      2018-08-03      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .4835      source      ORB      producer      Otto Matic      solution date      2019-Jul-14 14:52:28   Additional Information  Jupiter MOID = 2.61685 au   T_jup = 3.634  Orbit Covariance (6×6)   e q tp node peri i e 8.081191334113181E-15 -1.888483417171494E-14 2.217091734093923E-13 8.308872965375371E-14 -4.405557172749584E-14 -8.075515560328496E-14 q -1.888483417171494E-14 4.436133641609811E-14 -5.29996330838098E-13 -2.015535573405969E-13 1.089523776227613E-13 1.900006394007088E-13 tp 2.217091734093923E-13 -5.29996330838098E-13 1.963014056031216E-9 -5.365068050270173E-11 9.735851853511875E-10 -1.001738000064845E-11 node 8.308872965375371E-14 -2.015535573405969E-13 -5.365068050270173E-11 2.842292733308744E-9 -2.848230730489687E-9 1.176712748955157E-10 peri -4.405557172749584E-14 1.089523776227613E-13 9.735851853511875E-10 -2.848230730489687E-9 3.303539823386889E-9 -1.210868922753077E-10 i -8.075515560328496E-14 1.900006394007088E-13 -1.001738000064845E-11 1.176712748955157E-10 -1.210868922753077E-10 3.278433815492441E-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 17.9   n/a MPO456096   442715 (2012 UQ166)          Discovered 2009-Oct-26 by Mt. Lemmon Survey at Mount Lemmon Reference: Last Updated: 2015-09-02 Alternate Designations  2012 UQ166 = 2009 WV161  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Nov-28 00:05 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin