+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   357673 (2005 JW156) Classification: Main-belt Asteroid          SPK-ID: 2357673 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1339459579217554 7.188e-08   a 2.615388264629379 3.1256e-08 au q 2.265067578186279 2.0243e-07 au i 12.61019702952832 6.0267e-06 deg node 88.50923288320196 2.9943e-05 deg peri 75.03678065831859 3.6247e-05 deg M 261.1302751557353 2.3947e-05 deg tp 2459424.790695186789 (2021-Jul-29.29069519) 0.00010618 TDB period 1544.908216421566 4.23 2.7694e-05 7.582e-08 d yr n .2330235519323339 4.1772e-09 deg/d Q 2.965708951072478 3.5442e-08 au   Orbit Determination Parameters    # obs. used (total)      194      data-arc span      5291 days (14.49 yr)      first obs. used      2005-05-04      last obs. used      2019-10-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55068      source      ORB      producer      Otto Matic      solution date      2019-Nov-08 11:09:25   Additional Information  Earth MOID = 1.31228 au   Jupiter MOID = 2.14576 au   T_jup = 3.361  [ 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 16.5   n/a MPO494860   357673 (2005 JW156)          Discovered 2005-May-04 by Spacewatch at Kitt Peak Reference: 20130327/Numbers.arc Last Updated: 2013-03-29 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Aug-11 08:27 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin