+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   259284 (2003 ER6) Classification: Main-belt Asteroid          SPK-ID: 2259284 [ 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 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .206807897774765 3.9042e-08   a 2.584976252937497 1.4213e-08 au q 2.050382748269804 1.0212e-07 au i 4.021206212921924 5.5763e-06 deg node 199.3582887377461 6.8107e-05 deg peri 275.944349535282 7.0116e-05 deg M 84.0607927943359 1.6525e-05 deg tp 2458646.034277573670 (2019-Jun-11.53427757) 6.8121e-05 TDB period 1518.040168687027 4.16 1.252e-05 3.428e-08 d yr n .2371478748888238 1.9559e-09 deg/d Q 3.11956975760519 1.7152e-08 au   Orbit Determination Parameters    # obs. used (total)      327      data-arc span      6851 days (18.76 yr)      first obs. used      2001-09-20      last obs. used      2020-06-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .61585      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 23:11:09   Additional Information  Earth MOID = 1.07135 au   Jupiter MOID = 2.0102 au   T_jup = 3.389  [ 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 16.7   n/a MPO418380   259284 (2003 ER6)          Discovered 2003-Mar-06 by LONEOS at Anderson Mesa Reference: 20110119/Numbers.arc Last Updated: 2011-01-25 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-22 03:33 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin