+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   357854 (2005 UK227) Classification: Main-belt Asteroid          SPK-ID: 2357854 [ 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 .09416532443570998 6.1257e-08   a 3.082057444666902 3.8617e-08 au q 2.791834505460348 1.7708e-07 au i 6.464946286525001 6.3401e-06 deg node 57.88669819535762 4.4467e-05 deg peri 143.7406344785314 5.3428e-05 deg M 99.63262279251018 2.881e-05 deg tp 2458453.536201757358 (2018-Dec-01.03620176) 0.00015832 TDB period 1976.330260595666 5.41 3.7144e-05 1.017e-07 d yr n .1821557900406262 3.4235e-09 deg/d Q 3.372280383873456 4.2253e-08 au   Orbit Determination Parameters    # obs. used (total)      204      data-arc span      5438 days (14.89 yr)      first obs. used      2005-10-25      last obs. used      2020-09-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57602      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 16:26:16   Additional Information  Earth MOID = 1.79136 au   Jupiter MOID = 1.59551 au   T_jup = 3.211  [ hide covariance matrix ] Orbital Elements at Epoch 2458056.5 (2017-Oct-30.0) TDB Reference: JPL 8 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09180704001170692 6.1737e-08   q 2.797432684024218 1.7735e-07 au tp 2458454.910811997433 (2018-Dec-02.41081200) 0.00016161 TDB node 57.9628464920239 4.433e-05 deg peri 144.0972499588808 5.3648e-05 deg i 6.475900422256019 6.3495e-06 deg   Orbit Determination Parameters    # obs. used (total)      204      data-arc span      5438 days (14.89 yr)      first obs. used      2005-10-25      last obs. used      2020-09-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57602      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 16:26:16   Additional Information  Jupiter MOID = 1.59551 au   T_jup = 3.211  Orbit Covariance (6×6)   e q tp node peri i e 3.811476730768951E-15 -1.077621120423316E-14 1.502516832337282E-12 1.217243623964511E-14 1.289381424264841E-13 1.809991667776572E-15 q -1.077621120423316E-14 3.145381865429142E-14 -4.863584328180078E-12 -3.224770185514723E-14 -5.210793197828351E-13 -2.977037123155467E-15 tp 1.502516832337282E-12 -4.863584328180078E-12 2.611688848531609E-8 1.494430895218582E-11 4.889806203903713E-9 -4.726207969972225E-12 node 1.217243623964511E-14 -3.224770185514723E-14 1.494430895218582E-11 1.965169986641714E-9 -1.949764159584574E-9 -7.517991819438814E-13 peri 1.289381424264841E-13 -5.210793197828351E-13 4.889806203903713E-9 -1.949764159584574E-9 2.878130788900025E-9 -2.454150844337516E-13 i 1.809991667776572E-15 -2.977037123155467E-15 -4.726207969972225E-12 -7.517991819438814E-13 -2.454150844337516E-13 4.031569791324793E-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 16.0   n/a MPO437511   357854 (2005 UK227)          Discovered 2005-Oct-25 by Spacewatch at Kitt Peak Reference: 20130327/Numbers.arc Last Updated: 2013-03-29 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-20 10:25 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin