+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   74414 (1999 AN9) Classification: Main-belt Asteroid          SPK-ID: 2074414 [ 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 24 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1192551890847583 4.4509e-08   a 3.009365436801239 2.0836e-08 au q 2.650482992610371 1.3271e-07 au i 15.07321907186824 5.5004e-06 deg node 112.6044492925232 1.6175e-05 deg peri 314.9709350767293 2.9224e-05 deg M 65.69902411920089 2.2936e-05 deg tp 2458652.509620360867 (2019-Jun-18.00962036) 0.00012185 TDB period 1906.824923956139 5.22 1.9803e-05 5.422e-08 d yr n .1887955183914308 1.9607e-09 deg/d Q 3.368247880992107 2.332e-08 au   Orbit Determination Parameters    # obs. used (total)      958      data-arc span      9607 days (26.30 yr)      first obs. used      1994-01-08      last obs. used      2020-04-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .4787      source      ORB      producer      Otto Matic      solution date      2020-May-20 14:04:44   Additional Information  Earth MOID = 1.68776 au   Jupiter MOID = 1.90913 au   T_jup = 3.187  [ 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 14.5   n/a MPO337818   diameter diameter 5.186 km 0.353 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.165   0.059 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   74414 (1999 AN9)          Discovered 1999-Jan-10 by BAO Schmidt CCD Asteroid Program at Xinglong Reference: 20040415/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1999 AN9 = 2000 FZ24  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-11 08:31 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin