+ 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 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1454437579024991 4.3313e-08   a 2.273852795850374 1.4127e-08 au q 1.943135100304791 9.375e-08 au i 6.927926437769173 5.6111e-06 deg node 171.3994011937432 4.0953e-05 deg peri 137.4638447849665 4.9357e-05 deg M 112.4358848714581 2.581e-05 deg tp 2458609.349051899974 (2019-May-05.84905190) 8.8643e-05 TDB period 1252.396790197319 3.43 1.1671e-05 3.195e-08 d yr n .2874488363574302 2.6787e-09 deg/d Q 2.604570491395956 1.6181e-08 au   Orbit Determination Parameters    # obs. used (total)      345      data-arc span      6611 days (18.10 yr)      first obs. used      2002-10-11      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51144      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 00:20:51   Additional Information  Earth MOID = .935543 au   Jupiter MOID = 2.65684 au   T_jup = 3.587  [ hide covariance matrix ] Orbital Elements at Epoch 2457654.5 (2016-Sep-23.0) TDB Reference: JPL 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1459256251939791 4.3366e-08   q 1.941852485379399 9.3975e-08 au tp 2457357.787814283807 (2015-Dec-01.28781428) 8.5736e-05 TDB node 171.4351764346216 4.093e-05 deg peri 137.6013408601661 4.9303e-05 deg i 6.930181271956861 5.6139e-06 deg   Orbit Determination Parameters    # obs. used (total)      345      data-arc span      6611 days (18.10 yr)      first obs. used      2002-10-11      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51144      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 00:20:51   Additional Information  Jupiter MOID = 2.65684 au   T_jup = 3.587  Orbit Covariance (6×6)   e q tp node peri i e 1.880607725996741E-15 -4.048200250125296E-15 1.255066567355226E-12 1.30635408217669E-14 4.060967969997766E-13 1.483424061069765E-16 q -4.048200250125296E-15 8.83132371939449E-15 -2.69079865379596E-12 -2.861643793939038E-14 -8.666849650213304E-13 9.984007050901451E-17 tp 1.255066567355226E-12 -2.69079865379596E-12 7.350660023090041E-9 1.644792406480444E-11 2.37865151304961E-9 1.111345694811046E-11 node 1.30635408217669E-14 -2.861643793939038E-14 1.644792406480444E-11 1.675304579796572E-9 -1.656065776901958E-9 7.608264733557293E-11 peri 4.060967969997766E-13 -8.666849650213304E-13 2.37865151304961E-9 -1.656065776901958E-9 2.430763662120944E-9 -7.192774311143803E-11 i 1.483424061069765E-16 9.984007050901451E-17 1.111345694811046E-11 7.608264733557293E-11 -7.192774311143803E-11 3.151578157106068E-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 ] 2021-Jan-27 01:54 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin