+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   117648 (2005 EF147) Classification: Main-belt Asteroid          SPK-ID: 2117648 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ 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 .1546175842895992 4.1333e-08   a 2.399038308651608 8.6466e-09 au q 2.02810480074969 9.7376e-08 au i 9.142951344985766 5.0036e-06 deg node 199.6544543004249 1.7893e-05 deg peri 331.2705969784403 2.1446e-05 deg M 50.05403168510617 1.1546e-05 deg tp 2458811.791803191267 (2019-Nov-24.29180319) 4.3383e-05 TDB period 1357.232346008171 3.72 7.3376e-06 2.009e-08 d yr n .2652456678171688 1.434e-09 deg/d Q 2.769971816553526 9.9835e-09 au   Orbit Determination Parameters    # obs. used (total)      834      data-arc span      7556 days (20.69 yr)      first obs. used      1999-10-06      last obs. used      2020-06-13      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51489      source      ORB      producer      Otto Matic      solution date      2020-Jun-24 01:50:31   Additional Information  Earth MOID = 1.03774 au   Jupiter MOID = 2.2134 au   T_jup = 3.494  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 16.1   n/a MPO426742   diameter diameter 3.424 km 0.857 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)   geometric albedo albedo 0.050   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)   117648 (2005 EF147)          Discovered 2005-Mar-10 by LONEOS at Anderson Mesa Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  2005 EF147 = 2003 UD180  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Sep-23 14:23 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin