+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   101291 (1998 SP125) Classification: Main-belt Asteroid          SPK-ID: 2101291 [ 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 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1466434252324904 4.391e-08   a 2.277845265409563 1.0065e-08 au q 1.943814233540294 1.0238e-07 au i 6.067231173066333 5.3762e-06 deg node 156.9120204428598 3.781e-05 deg peri 224.2220687898986 4.1855e-05 deg M 103.0588138784657 1.7956e-05 deg tp 2458641.026074361262 (2019-Jun-06.52607436) 6.1707e-05 TDB period 1255.696707149724 3.44 8.3231e-06 2.279e-08 d yr n .2866934331755599 1.9003e-09 deg/d Q 2.611876297278833 1.1542e-08 au   Orbit Determination Parameters    # obs. used (total)      649      data-arc span      7878 days (21.57 yr)      first obs. used      1998-09-24      last obs. used      2020-04-19      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .59225      source      ORB      producer      Otto Matic      solution date      2020-May-20 17:59:00   Additional Information  Earth MOID = .950998 au   Jupiter MOID = 2.85344 au   T_jup = 3.586  [ hide covariance matrix ] Orbital Elements at Epoch 2456621.5 (2013-Nov-25.0) TDB Reference: JPL 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1472259387352972 4.4143e-08   q 1.941904410643715 1.0296e-07 au tp 2456128.445199915436 (2012-Jul-19.94519992) 5.6919e-05 TDB node 156.9886822288289 3.7772e-05 deg peri 223.778235488873 4.1768e-05 deg i 6.070347058358551 5.3804e-06 deg   Orbit Determination Parameters    # obs. used (total)      649      data-arc span      7878 days (21.57 yr)      first obs. used      1998-09-24      last obs. used      2020-04-19      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .59225      source      ORB      producer      Otto Matic      solution date      2020-May-20 17:59:00   Additional Information  Jupiter MOID = 2.85344 au   T_jup = 3.586  Orbit Covariance (6×6)   e q tp node peri i e 1.948564825555776E-15 -4.529898751341568E-15 -9.001814620041209E-13 -8.351033528634569E-15 -2.827123458754141E-13 -3.217154075279243E-15 q -4.529898751341568E-15 1.059990902349296E-14 2.10954661043834E-12 1.820877657614456E-14 6.690252863839402E-13 7.705964611676129E-15 tp -9.001814620041209E-13 2.10954661043834E-12 3.239726598571229E-9 -3.629544683455841E-12 1.025439743806873E-9 -1.974332600630212E-12 node -8.351033528634569E-15 1.820877657614456E-14 -3.629544683455841E-12 1.426696887789733E-9 -1.418740524008636E-9 1.088480020536066E-11 peri -2.827123458754141E-13 6.690252863839402E-13 1.025439743806873E-9 -1.418740524008636E-9 1.744541324215616E-9 -1.147551705114546E-11 i -3.217154075279243E-15 7.705964611676129E-15 -1.974332600630212E-12 1.088480020536066E-11 -1.147551705114546E-11 2.89482936866263E-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 16.1   n/a MPO348131   101291 (1998 SP125)          Discovered 1998-Sep-26 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 Alternate Designations  1998 SP125 = 2003 AA40  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-25 02:14 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin