+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   19980 Barrysimon (1989 WF2) Classification: Main-belt Asteroid          SPK-ID: 2019980 [ 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 .2537327564850966 3.2437e-08   a 2.352150350355987 9.5629e-09 au q 1.755332758292776 7.7095e-08 au i 21.6214297807931 5.2892e-06 deg node 221.5827278586693 1.049e-05 deg peri 261.5428138688552 1.4807e-05 deg M 136.6681232689859 9.986e-06 deg tp 2458500.280319302498 (2019-Jan-16.78031930) 3.5804e-05 TDB period 1317.637798367033 3.61 8.0354e-06 2.2e-08 d yr n .2732162058846164 1.6662e-09 deg/d Q 2.948967942419197 1.1989e-08 au   Orbit Determination Parameters    # obs. used (total)      1394      data-arc span      25839 days (70.74 yr)      first obs. used      1949-11-19      last obs. used      2020-08-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .45812      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 02:05:28   Additional Information  Earth MOID = .9048 au   Jupiter MOID = 2.57153 au   T_jup = 3.421  [ 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 14.3   n/a MPO384926   diameter diameter 3.601 km 0.148 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.312   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   19980 Barrysimon           Discovered 1989 Nov. 22 by C. S. Shoemaker and D. H. Levy at Palomar. Barry Simon (b. 1952), a first-rate amateur astronomer, founded the Deep South Regional Stargaze in 1983 and has managed it since then. Now in its twentieth year, this event helps participants from many southern states observe under a dark sky. Simon has amassed a large collection of refractor telescopes. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20030501/MPCPages.arc Last Updated: 2003-10-02 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 2157-Jan-30 14:35 00:01 Hebe 0.037151992587526 0.0371510418879679 0.0371529445012052 10.033680688769 10.0336806720921 2508918.107962864 1.08840098324912 960.592244835564 44.4498001556844 89.0112049552043 125003.627447278 T 24 CATAB v2.0f-lin.ifort 2020-Nov-13 02:05:32 2020-Nov-13 02:05 2172-Dec-01 11:38 00:02 Inter 0.0344817702572004 0.0344768329253044 0.0344867203861486 7.09635053742093 7.09635047759436 2514701.984492083 1.7669552101496 1088.8787296541 39.0702495693978 -77.0786185626985 128650.543565562 T 24 CATAB v2.0f-lin.ifort 2020-Nov-13 02:05:32 2020-Nov-13 02:05 Alternate Designations  1989 WF2 = 2000 UL16  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-17 22:33 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin