+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   117441 (2005 AY38) Classification: Main-belt Asteroid          SPK-ID: 2117441 [ 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 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07898760114764461 5.8435e-08   a 2.683451223178547 1.9402e-08 au q 2.471491848262961 1.6323e-07 au i 10.29556307686039 5.5713e-06 deg node 104.1147562525043 3.4607e-05 deg peri 147.2536929701757 4.9244e-05 deg M 61.21914469343081 3.5768e-05 deg tp 2458727.461592574469 (2019-Aug-31.96159257) 0.00015916 TDB period 1605.60601043057 4.40 1.7414e-05 4.768e-08 d yr n .2242144073087146 2.4317e-09 deg/d Q 2.895410598094133 2.0935e-08 au   Orbit Determination Parameters    # obs. used (total)      470      data-arc span      6672 days (18.27 yr)      first obs. used      2001-02-02      last obs. used      2019-05-11      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53873      source      ORB      producer      Otto Matic      solution date      2019-May-30 06:54:47   Additional Information  Earth MOID = 1.4628 au   Jupiter MOID = 2.17671 au   T_jup = 3.348  [ 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 15.3   n/a MPO475031   diameter diameter 2.329 km 0.345 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.325   0.094 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   117441 (2005 AY38)          Discovered 2005-Jan-13 by Spacewatch at Kitt Peak Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  2005 AY38 = 2003 WQ167  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-10 20:10 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin