+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   344609 (2003 EM50) Classification: Inner Main-belt Asteroid          SPK-ID: 2344609 [ 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 .01593969648454639 4.1279e-08   a 1.884282407696346 1.0331e-08 au q 1.854247518026496 7.9235e-08 au i 18.28169480184698 6.4113e-06 deg node 335.5286635549951 1.4439e-05 deg peri 280.6167420533301 0.00021083 deg M 139.7664209921418 0.00021128 deg tp 2458633.709768766098 (2019-May-30.20976877) 0.00055441 TDB period 944.751123387704 2.59 7.7697e-06 2.127e-08 d yr n .3810527355703014 3.1338e-09 deg/d Q 1.914317297366196 1.0496e-08 au   Orbit Determination Parameters    # obs. used (total)      187      data-arc span      5447 days (14.91 yr)      first obs. used      2003-02-21      last obs. used      2018-01-20      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .58681      source      ORB      producer      Otto Matic      solution date      2018-Feb-06 09:18:16   Additional Information  Earth MOID = .864975 au   Jupiter MOID = 3.1015 au   T_jup = 3.904  [ 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 17.7   n/a MPO434167   344609 (2003 EM50)          Discovered 2003-Mar-09 by Spacewatch at Kitt Peak Reference: 20121128/Numbers.arc Last Updated: 2012-12-03 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Jul-14 01:17 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin