+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   357175 (2002 EC17) Classification: Main-belt Asteroid          SPK-ID: 2357175 [ 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 8 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .179275415947517 7.38e-08   a 2.371360321397368 1.5563e-08 au q 1.946233713417417 1.7263e-07 au i 2.169374411403402 9.0018e-06 deg node 173.3730133196901 0.00019131 deg peri 64.55491077141488 0.00019359 deg M 297.8795411700111 2.4822e-05 deg tp 2459230.658439388682 (2021-Jan-16.15843939) 9.211e-05 TDB period 1333.812398370853 3.65 1.3131e-05 3.595e-08 d yr n .2699030241731983 2.6571e-09 deg/d Q 2.796486929377318 1.8353e-08 au   Orbit Determination Parameters    # obs. used (total)      83      data-arc span      6555 days (17.95 yr)      first obs. used      2002-02-13      last obs. used      2020-01-25      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54851      source      ORB      producer      Otto Matic      solution date      2020-Feb-26 00:28:11   Additional Information  Earth MOID = .935498 au   Jupiter MOID = 2.20835 au   T_jup = 3.522  [ 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 18.0   n/a MPO413355   357175 (2002 EC17)          Discovered 2002-Mar-05 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-05 11:18 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin