+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   74404 (1998 YU11) Classification: Main-belt Asteroid          SPK-ID: 2074404 [ 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 .04297033185556306 3.9731e-08   a 3.034813967209214 2.4375e-08 au q 2.904407003918336 1.2644e-07 au i 8.167661861733942 4.4202e-06 deg node 105.9498179987945 3.9002e-05 deg peri 5.826918468112106 7.7892e-05 deg M 9.15123571054961 6.6088e-05 deg tp 2458951.412176197209 (2020-Apr-11.91217620) 0.00035449 TDB period 1931.063424432699 5.29 2.3265e-05 6.37e-08 d yr n .186425777343776 2.246e-09 deg/d Q 3.165220930500091 2.5423e-08 au   Orbit Determination Parameters    # obs. used (total)      975      data-arc span      7714 days (21.12 yr)      first obs. used      1998-12-19      last obs. used      2020-02-01      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53452      source      ORB      producer      Otto Matic      solution date      2020-Feb-23 17:15:30   Additional Information  Earth MOID = 1.92119 au   Jupiter MOID = 1.90828 au   T_jup = 3.225  [ 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 14.2   n/a MPO337818   diameter diameter 7.930 km 0.154 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.071   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   74404 (1998 YU11)          Discovered 1998-Dec-19 by Kawasato, N. at Uenohara Reference: 20040415/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1998 YU11 = 2000 FW45  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Sep-25 18:02 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin