+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   150914 (2001 TR38) Classification: Main-belt Asteroid          SPK-ID: 2150914 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 22 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1122700549419628 4.2709e-08   a 2.567219653900664 2.0876e-08 au q 2.27899776230915 1.1617e-07 au i 8.173377337546437 4.5044e-06 deg node 276.669455838133 5.0386e-05 deg peri 28.09719309191049 5.9618e-05 deg M 326.6186841456603 3.3202e-05 deg tp 2459339.813730438317 (2021-May-05.31373044) 0.0001386 TDB period 1502.425583719883 4.11 1.8326e-05 5.017e-08 d yr n .2396125331603242 2.9227e-09 deg/d Q 2.855441545492178 2.322e-08 au   Orbit Determination Parameters    # obs. used (total)      627      data-arc span      6790 days (18.59 yr)      first obs. used      2001-10-14      last obs. used      2020-05-17      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .55496      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 19:20:35   Additional Information  Earth MOID = 1.26511 au   Jupiter MOID = 2.34436 au   T_jup = 3.409  [ 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 15.54   n/a E2021B55   150914 (2001 TR38)          Discovered 2001-Oct-14 by LINEAR at Socorro Reference: 20070303/Numbers.arc Last Updated: 2007-03-07 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-15 00:14 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin