+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   266522 (2008 EJ166) Classification: Main-belt Asteroid          SPK-ID: 2266522 [ 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 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1454437575522342 4.3419e-08   a 2.273852795726531 1.4149e-08 au q 1.943135100995411 9.4056e-08 au i 6.92792694940059 5.7257e-06 deg node 171.3994041925789 4.1441e-05 deg peri 137.4638420340827 5.058e-05 deg M 112.4358847040053 2.6869e-05 deg tp 2458609.349052514477 (2019-May-05.84905251) 9.2429e-05 TDB period 1252.396790095004 3.43 1.169e-05 3.201e-08 d yr n .2874488363809135 2.683e-09 deg/d Q 2.604570490457651 1.6207e-08 au   Orbit Determination Parameters    # obs. used (total)      342      data-arc span      6317 days (17.30 yr)      first obs. used      2002-10-11      last obs. used      2020-01-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51311      source      ORB      producer      Otto Matic      solution date      2020-Feb-25 12:47:55   Additional Information  Earth MOID = .935543 au   Jupiter MOID = 2.65684 au   T_jup = 3.587  [ hide covariance matrix ] Orbital Elements at Epoch 2457608.5 (2016-Aug-08.0) TDB Reference: JPL 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1459125522921522 4.3485e-08   q 1.941919264056349 9.4314e-08 au tp 2457357.804129145816 (2015-Dec-01.30412915) 8.9832e-05 TDB node 171.4354027604305 4.1417e-05 deg peri 137.6096089694134 5.0524e-05 deg i 6.930201168984039 5.7286e-06 deg   Orbit Determination Parameters    # obs. used (total)      342      data-arc span      6317 days (17.30 yr)      first obs. used      2002-10-11      last obs. used      2020-01-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51311      source      ORB      producer      Otto Matic      solution date      2020-Feb-25 12:47:55   Additional Information  Jupiter MOID = 2.65684 au   T_jup = 3.587  Orbit Covariance (6×6)   e q tp node peri i e 1.890959210325104E-15 -4.073884284114617E-15 1.340503976920492E-12 1.227606112426593E-14 4.360386914859938E-13 6.410337978309386E-17 q -4.073884284114617E-15 8.895189667344306E-15 -2.90430643401109E-12 -2.684474064468608E-14 -9.413089377840686E-13 2.747242180681587E-16 tp 1.340503976920492E-12 -2.90430643401109E-12 8.069722451929853E-9 1.853983411021313E-11 2.62198173497142E-9 1.19694348997649E-11 node 1.227606112426593E-14 -2.684474064468608E-14 1.853983411021313E-11 1.715378651120476E-9 -1.695156359717822E-9 8.330677813691079E-11 peri 4.360386914859938E-13 -9.413089377840686E-13 2.62198173497142E-9 -1.695156359717822E-9 2.55264054739014E-9 -7.881126835592243E-11 i 6.410337978309386E-17 2.747242180681587E-16 1.19694348997649E-11 8.330677813691079E-11 -7.881126835592243E-11 3.281724521682784E-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 16.6   n/a MPO437227   266522 (2008 EJ166)          Discovered 2008-Mar-05 by Mt. Lemmon Survey at Mount Lemmon Reference: 20110218/Numbers.arc Last Updated: 2011-02-22 Alternate Designations  2008 EJ166 = 2005 NE3  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Oct-01 12:48 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin