+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   180868 (2005 JP42) Classification: Main-belt Asteroid          SPK-ID: 2180868 [ 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 .03155360004159518 3.3657e-08   a 2.240892104475507 1.1024e-08 au q 2.170183891274518 7.3662e-08 au i 2.942137666013549 4.1008e-06 deg node 102.9067496939889 8.439e-05 deg peri 142.0760689860287 0.00011388 deg M 220.1398819113436 7.7429e-05 deg tp 2459676.515655531963 (2022-Apr-07.01565553) 0.00026399 TDB period 1225.264488071425 3.35 9.0417e-06 2.475e-08 d yr n .2938141140176538 2.1682e-09 deg/d Q 2.311600317676495 1.1372e-08 au   Orbit Determination Parameters    # obs. used (total)      374      data-arc span      8336 days (22.82 yr)      first obs. used      1998-03-24      last obs. used      2021-01-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54048      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 11:44:19   Additional Information  Earth MOID = 1.15544 au   Jupiter MOID = 2.66609 au   T_jup = 3.632  [ 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 17.0   n/a MPO436894   180868 (2005 JP42)          Discovered 2005-May-08 by LONEOS at Anderson Mesa Reference: 20080321/Numbers.arc Last Updated: 2008-03-26 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-13 14:37 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin