+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   452238 (2015 SU18) Classification: Main-belt Asteroid          SPK-ID: 2452238 [ 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 9 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .203622700589301 1.1903e-07   a 2.226117678457561 2.5331e-08 au q 1.772829584940447 2.5548e-07 au i 6.243746528761404 6.9538e-06 deg node 125.0718479516275 9.3077e-05 deg peri 214.5469589697881 9.4877e-05 deg M 166.2752535464189 2.441e-05 deg tp 2458440.167616309124 (2018-Nov-17.66761631) 7.6631e-05 TDB period 1213.16704576488 3.32 2.0707e-05 5.669e-08 d yr n .2967439655212746 5.0649e-09 deg/d Q 2.679405771974675 3.0489e-08 au   Orbit Determination Parameters    # obs. used (total)      94      data-arc span      6822 days (18.68 yr)      first obs. used      2001-05-24      last obs. used      2020-01-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .73285      source      ORB      producer      Otto Matic      solution date      2020-Feb-26 11:34:00   Additional Information  Earth MOID = .767655 au   Jupiter MOID = 2.70991 au   T_jup = 3.611  [ hide covariance matrix ] Orbital Elements at Epoch 2457016.5 (2014-Dec-25.0) TDB Reference: JPL 9 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2044946824369009 1.1941e-07   q 1.77054451321808 2.566e-07 au tp 2457226.599256458941 (2015-Jul-23.09925646) 6.7099e-05 TDB node 125.1431249776233 9.3063e-05 deg peri 214.4048824323545 9.4838e-05 deg i 6.245074017590676 6.9594e-06 deg   Orbit Determination Parameters    # obs. used (total)      94      data-arc span      6822 days (18.68 yr)      first obs. used      2001-05-24      last obs. used      2020-01-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .73285      source      ORB      producer      Otto Matic      solution date      2020-Feb-26 11:34:00   Additional Information  Jupiter MOID = 2.70991 au   T_jup = 3.611  Orbit Covariance (6×6)   e q tp node peri i e 1.425860170076932E-14 -3.056971231003244E-14 5.322503842873064E-12 1.450602641508536E-16 1.269719989066609E-12 -6.89652876222044E-14 q -3.056971231003244E-14 6.584165600594942E-14 -1.142598538646186E-11 -4.090208010040216E-15 -2.740182494681392E-12 1.484396704903447E-13 tp 5.322503842873064E-12 -1.142598538646186E-11 4.502307840748852E-9 1.683095627929321E-11 1.332935363679145E-9 -3.221933565928914E-11 node 1.450602641508536E-16 -4.090208010040216E-15 1.683095627929321E-11 8.66066733189052E-9 -8.604633899634364E-9 3.07522274849482E-10 peri 1.269719989066609E-12 -2.740182494681392E-12 1.332935363679145E-9 -8.604633899634364E-9 8.994303618980051E-9 -3.142053134290577E-10 i -6.89652876222044E-14 1.484396704903447E-13 -3.221933565928914E-11 3.07522274849482E-10 -3.142053134290577E-10 4.84327258599839E-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 MPO361090   452238 (2015 SU18)          Discovered 2005-Aug-27 by LONEOS at Anderson Mesa Reference: Last Updated: 2015-11-30 Alternate Designations  2015 SU18 = 2012 XF146 = 2014 DD79  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-18 12:19 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin