+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   452340 (2001 ST127) Classification: Main-belt Asteroid          SPK-ID: 2452340 [ 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 .198147486431692 1.2103e-07   a 2.240339457041163 1.4318e-08 au q 1.796421824874715 2.6514e-07 au i 7.118455872485514 6.9001e-06 deg node 352.6860416271689 5.8897e-05 deg peri 353.3029821905471 6.4553e-05 deg M 213.9084126991656 2.3038e-05 deg tp 2459497.540612208154 (2021-Oct-10.04061221) 8.0715e-05 TDB period 1224.81125505516 3.35 1.1741e-05 3.215e-08 d yr n .2939228379182285 2.8176e-09 deg/d Q 2.684257089207612 1.7155e-08 au   Orbit Determination Parameters    # obs. used (total)      148      data-arc span      6370 days (17.44 yr)      first obs. used      2001-08-24      last obs. used      2019-02-01      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .64104      source      ORB      producer      Otto Matic      solution date      2019-Jul-13 15:16:44   Additional Information  Earth MOID = .789712 au   Jupiter MOID = 2.73018 au   T_jup = 3.599  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 17.6   n/a MPO456153   452340 (2001 ST127)          Discovered 2001-Aug-24 by LINEAR at Socorro Reference: Last Updated: 2016-01-04 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Jul-04 19:38 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin