+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   187692 (2008 DM56) Classification: Jupiter Trojan          SPK-ID: 2187692 [ 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 .02000307537061528 7.0896e-08   a 5.226822033161087 1.7192e-07 au q 5.122269518082973 4.9295e-07 au i 27.29750718480168 9.5043e-06 deg node 15.19152906299916 1.1753e-05 deg peri 241.3254763871174 0.00023637 deg M 322.1735027333158 0.00023724 deg tp 2459659.115388775874 (2022-Mar-20.61538878) 0.0028766 TDB period 4364.706010057359 11.95 0.00021535 5.896e-07 d yr n .08247978195334833 4.0694e-09 deg/d Q 5.3313745482392 1.7536e-07 au   Orbit Determination Parameters    # obs. used (total)      302      data-arc span      6841 days (18.73 yr)      first obs. used      2001-09-18      last obs. used      2020-06-11      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .60228      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 21:56:27   Additional Information  Earth MOID = 4.1561 au   Jupiter MOID = .284356 au   T_jup = 2.776  [ 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 12.83   n/a E2021B55   187692 (2008 DM56)          Discovered 2008-Feb-29 by Spacewatch at Kitt Peak Reference: 20080520/Numbers.arc Last Updated: 2008-05-22 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-15 15:24 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin