+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   117808 (2005 GM178) Classification: Main-belt Asteroid          SPK-ID: 2117808 [ 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 .08902234490080627 4.9769e-08   a 2.790932873567122 1.8726e-08 au q 2.542477484701431 1.3252e-07 au i 6.995570358574999 4.5095e-06 deg node 145.2144689813167 3.1084e-05 deg peri 33.67369424545817 3.7927e-05 deg M 166.8018168618296 2.3044e-05 deg tp 2458411.420447498826 (2018-Oct-19.92044750) 0.00010685 TDB period 1703.03084369717 4.66 1.714e-05 4.693e-08 d yr n .2113878332458519 2.1275e-09 deg/d Q 3.039388262432813 2.0393e-08 au   Orbit Determination Parameters    # obs. used (total)      589      data-arc span      7578 days (20.75 yr)      first obs. used      2000-03-11      last obs. used      2020-12-09      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55744      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 09:17:57   Additional Information  Earth MOID = 1.54979 au   Jupiter MOID = 1.92876 au   T_jup = 3.312  [ hide covariance matrix ] Orbital Elements at Epoch 2457443.5 (2016-Feb-25.0) TDB Reference: JPL 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08659637654715417 4.9793e-08   q 2.550946991163655 1.3229e-07 au tp 2456703.921247875958 (2014-Feb-15.42124788) 0.00010713 TDB node 145.3252487484511 3.1161e-05 deg peri 33.23779366244098 3.8335e-05 deg i 6.984578415629736 4.5029e-06 deg   Orbit Determination Parameters    # obs. used (total)      589      data-arc span      7578 days (20.75 yr)      first obs. used      2000-03-11      last obs. used      2020-12-09      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55744      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 09:17:57   Additional Information  Jupiter MOID = 1.92876 au   T_jup = 3.312  Orbit Covariance (6×6)   e q tp node peri i e 2.4793516037588E-15 -6.542604724697996E-15 1.901797632194722E-13 7.153850653693689E-15 -2.541439706900064E-14 -2.66428166031486E-15 q -6.542604724697996E-15 1.750117387236542E-14 -3.709868228187838E-13 -1.799828197228721E-14 1.128540922654606E-13 7.320450564044163E-15 tp 1.901797632194722E-13 -3.709868228187838E-13 1.147785834222455E-8 -5.031422499009679E-12 2.400114259323909E-9 -4.539633098726502E-12 node 7.153850653693689E-15 -1.799828197228721E-14 -5.031422499009679E-12 9.710311182529825E-10 -9.64635714365454E-10 1.072465277583388E-11 peri -2.541439706900064E-14 1.128540922654606E-13 2.400114259323909E-9 -9.64635714365454E-10 1.469575345449841E-9 -1.15239598743244E-11 i -2.66428166031486E-15 7.320450564044163E-15 -4.539633098726502E-12 1.072465277583388E-11 -1.15239598743244E-11 2.027648021068841E-11 [ 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 15.54   n/a E2021B55   117808 (2005 GM178)          Discovered 2005-Apr-15 by CSS at Catalina Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  2005 GM178 = 2002 TT341  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-03 22:53 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin