+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   190877 (2001 TW130) Classification: Main-belt Asteroid          SPK-ID: 2190877 [ 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 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1489229027543535 3.9161e-08   a 2.316787991220233 1.1069e-08 au q 1.971765198501288 8.9771e-08 au i 7.169909740426319 5.4979e-06 deg node 63.83032684000537 3.4958e-05 deg peri 276.9964408311949 3.9978e-05 deg M 176.3716565405745 1.9653e-05 deg tp 2458569.463964910519 (2019-Mar-26.96396491) 6.8674e-05 TDB period 1288.035601003451 3.53 9.2305e-06 2.527e-08 d yr n .2794953801894452 2.003e-09 deg/d Q 2.661810783939178 1.2717e-08 au   Orbit Determination Parameters    # obs. used (total)      356      data-arc span      9778 days (26.77 yr)      first obs. used      1993-04-21      last obs. used      2020-01-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55355      source      ORB      producer      Otto Matic      solution date      2020-Feb-24 21:26:44   Additional Information  Earth MOID = .977383 au   Jupiter MOID = 2.73538 au   T_jup = 3.555  [ 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 16.7   n/a MPO449947   190877 (2001 TW130)          Discovered 2001-Oct-10 by NEAT at Palomar Reference: 20080917/Numbers.arc Last Updated: 2008-09-19 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-11 12:48 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin