+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   9766 Bradbury (1992 DZ2) Classification: Main-belt Asteroid          SPK-ID: 2009766 [ 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 28 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .0820383641441111 3.334e-08   a 2.45225349917436 7.8384e-09 au q 2.251074633635423 8.1994e-08 au i 1.275360521656095 3.8616e-06 deg node 53.10136617683592 0.00019567 deg peri 60.13829965859421 0.00019833 deg M 170.0342886398719 3.141e-05 deg tp 2458338.008242507688 (2018-Aug-07.50824251) 0.00012213 TDB period 1402.640812067987 3.84 6.7251e-06 1.841e-08 d yr n .2566587232473531 1.2306e-09 deg/d Q 2.653432364713297 8.4815e-09 au   Orbit Determination Parameters    # obs. used (total)      1898      data-arc span      24299 days (66.53 yr)      first obs. used      1954-04-08      last obs. used      2020-10-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51247      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 03:11:14   Additional Information  Earth MOID = 1.26792 au   Jupiter MOID = 2.40699 au   T_jup = 3.490  [ 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 14.31   n/a E2021B10   diameter diameter 5.562 km 1.415 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)   geometric albedo albedo 0.137   0.068 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   9766 Bradbury           Discovered 1992 Feb. 24 by Spacewatch at Kitt Peak. Ray Douglas Bradbury (b. 1920) is the critically acclaimed science fiction author whose works include The Martian Chronicles and The Illustrated Man. He has worked in television and as "Imagineer" of Disney's Spaceship Earth at the Epcot center in Florida. His work has inspired many young scientists and engineers. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20001111/MPCPages.arc Last Updated: 2013-03-29 [ show close-approach data ] Alternate Designations  1992 DZ2 = 1981 JX4 = 1988 FK1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Feb-28 15:52 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin