+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   20482 Dustinshea (1999 NH40) Classification: Main-belt Asteroid          SPK-ID: 2020482 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ 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 .1598370866573557 4.1857e-08   a 2.442509693140432 1.0564e-08 au q 2.052106059656513 9.9763e-08 au i 3.39870520123102 3.9334e-06 deg node 105.0366966694104 7.4092e-05 deg peri 129.4653708354324 7.5151e-05 deg M 224.7746539151294 1.5328e-05 deg tp 2459524.231229986626 (2021-Nov-05.73122999) 6.1351e-05 TDB period 1394.289223536917 3.82 9.0453e-06 2.476e-08 d yr n .2581960714626925 1.675e-09 deg/d Q 2.83291332662435 1.2252e-08 au   Orbit Determination Parameters    # obs. used (total)      1326      data-arc span      9810 days (26.86 yr)      first obs. used      1994-01-05      last obs. used      2020-11-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5424      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 20:38:10   Additional Information  Earth MOID = 1.04269 au   Jupiter MOID = 2.16664 au   T_jup = 3.481  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.8   n/a MPO452460   diameter diameter 2.877 km 0.081 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.162   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   20482 Dustinshea           Discovered 1999 July 14 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Dustin James Shea (b. 1991) is a finalist in the 2004 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for his behavioral science project. He attends the Our Saviour School, Jacksonville, Illinois. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20041028/MPCPages.arc Last Updated: 2004-10-29 Alternate Designations  1999 NH40 = 2000 VH16  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-28 06:59 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin