+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   160894 (2001 SP87) Classification: Main-belt Asteroid          SPK-ID: 2160894 [ 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 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07633422045147524 6.0297e-08   a 2.587022682394178 1.7096e-08 au q 2.389544322643334 1.5193e-07 au i 2.42439998445834 4.7203e-06 deg node 286.7135125546323 0.00014583 deg peri 112.2955688148503 0.00014983 deg M 133.1005031980637 3.4173e-05 deg tp 2458438.578074250319 (2018-Nov-16.07807425) 0.00014448 TDB period 1519.843189239182 4.16 1.5066e-05 4.125e-08 d yr n .2368665415938156 2.348e-09 deg/d Q 2.784501042145022 1.8401e-08 au   Orbit Determination Parameters    # obs. used (total)      340      data-arc span      9687 days (26.52 yr)      first obs. used      1993-10-10      last obs. used      2020-04-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52282      source      ORB      producer      Otto Matic      solution date      2020-May-21 01:36:56   Additional Information  Earth MOID = 1.39836 au   Jupiter MOID = 2.51216 au   T_jup = 3.416  [ hide covariance matrix ] Orbital Elements at Epoch 2457123.5 (2015-Apr-11.0) TDB Reference: JPL 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07443381507348444 6.0044e-08   q 2.394864568257414 1.5089e-07 au tp 2456916.642015636550 (2014-Sep-16.14201564) 0.00015073 TDB node 286.8874273314945 0.00014557 deg peri 111.9001298658408 0.00014983 deg i 2.426524648879863 4.725e-06 deg   Orbit Determination Parameters    # obs. used (total)      340      data-arc span      9687 days (26.52 yr)      first obs. used      1993-10-10      last obs. used      2020-04-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52282      source      ORB      producer      Otto Matic      solution date      2020-May-21 01:36:56   Additional Information  Jupiter MOID = 2.51216 au   T_jup = 3.416  Orbit Covariance (6×6)   e q tp node peri i e 3.60531200169172E-15 -9.014805545256556E-15 -3.171573572051578E-12 -6.93165559698586E-14 -7.887244293949114E-13 -1.410051091690306E-16 q -9.014805545256556E-15 2.276677897934463E-14 7.805104690470175E-12 1.743126065177327E-13 1.948231968652493E-12 5.838794035600181E-16 tp -3.171573572051578E-12 7.805104690470175E-12 2.272052665265448E-8 9.170093044794352E-11 5.40213641348374E-9 -2.283515448713986E-12 node -6.93165559698586E-14 1.743126065177327E-13 9.170093044794352E-11 2.118954295381898E-8 -2.114636085883343E-8 1.139648568062475E-10 peri -7.887244293949114E-13 1.948231968652493E-12 5.40213641348374E-9 -2.114636085883343E-8 2.244853446104106E-8 -1.143920666783853E-10 i -1.410051091690306E-16 5.838794035600181E-16 -2.283515448713986E-12 1.139648568062475E-10 -1.143920666783853E-10 2.232586765373333E-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 16.4   n/a MPO469700   160894 (2001 SP87)          Discovered 2001-Sep-20 by LINEAR at Socorro Reference: 20070828/Numbers.arc Last Updated: 2007-08-30 [ show close-approach data ] Alternate Designations  2001 SP87 = 2004 JL51  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-15 06:09 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin