+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   190086 (2004 TW112) Classification: Main-belt Asteroid          SPK-ID: 2190086 [ 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 23 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1917067690251957 5.0032e-08   a 2.691461500521709 2.4696e-08 au q 2.175490112300987 1.3912e-07 au i 12.89997032084657 5.1367e-06 deg node 277.3219695527752 3.3696e-05 deg peri 27.39209761425637 3.9167e-05 deg M 305.7596704679261 2.2775e-05 deg tp 2459443.496771410727 (2021-Aug-16.99677141) 0.00010335 TDB period 1612.800631237553 4.42 2.2198e-05 6.077e-08 d yr n .2232141983499601 3.0723e-09 deg/d Q 3.207432888742431 2.9431e-08 au   Orbit Determination Parameters    # obs. used (total)      360      data-arc span      7621 days (20.87 yr)      first obs. used      1999-07-13      last obs. used      2020-05-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .4882      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 07:05:37   Additional Information  Earth MOID = 1.16601 au   Jupiter MOID = 2.03974 au   T_jup = 3.309  [ 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 15.47   n/a E2021B55   190086 (2004 TW112)          Discovered 2004-Oct-07 by NEAT at Palomar Reference: 20080819/Numbers.arc Last Updated: 2008-08-25 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-12 21:52 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin