+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   187031 (2005 EY317) Classification: Inner Main-belt Asteroid          SPK-ID: 2187031 [ 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 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08327434336787902 4.6824e-08   a 1.944794689651651 8.7533e-09 au q 1.782843188885572 8.9893e-08 au i 21.28298399101078 6.3816e-06 deg node 188.1058671409693 1.1942e-05 deg peri 261.9311098263237 3.9245e-05 deg M 12.61800366789601 3.8685e-05 deg tp 2459165.778601010901 (2020-Nov-12.27860101) 0.00010642 TDB period 990.6245048793703 2.71 6.688e-06 1.831e-08 d yr n .3634071216962654 2.4535e-09 deg/d Q 2.106746190417731 9.4822e-09 au   Orbit Determination Parameters    # obs. used (total)      433      data-arc span      9207 days (25.21 yr)      first obs. used      1995-10-26      last obs. used      2021-01-09      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56861      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 19:51:46   Additional Information  Earth MOID = .877529 au   Jupiter MOID = 3.03476 au   T_jup = 3.811  [ 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 16.9   n/a MPO367180   187031 (2005 EY317)          Discovered 2005-Mar-13 by CSS at Catalina Reference: 20080520/Numbers.arc Last Updated: 2008-05-22 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-11 14:30 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin