+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   7110 Johnpearse (1983 XH1) Classification: Main-belt Asteroid          SPK-ID: 2007110 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 1 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2058067186348633 4.7685e-08   a 2.797076896004346 2.1781e-08 AU q 2.221419678268303 1.3144e-07 AU i 7.661472731906222 7.9305e-06 deg node 173.680973857335 3.7819e-05 deg peri 267.0151537265785 4.3389e-05 deg M 87.13520815645766 1.899e-05 deg tp 2455986.932685252951 (2012-Feb-29.43268525) 8.9812e-05 JED period 1708.657573200549 4.68 1.9958e-05 5.464e-08 d yr n .2106917182508786 2.461e-09 deg/d Q 3.37273411374039 2.6264e-08 AU   Orbit Determination Parameters    # obs. used (total)      1034      data-arc span      12638 days (34.60 yr)      first obs. used      1978-09-12      last obs. used      2013-04-19      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .56801      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 13:25:00   Additional Information  Earth MOID = 1.25208 AU   T_jup = 3.282  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 12.5 mag n/a PDS3 (MPC 27698)   diameter diameter 14 km n/a DASTCOM value unverified geometric albedo albedo 0.0625   0.013 EAR-A-5-DDR-ALBEDOS-V1.0:IMPS IMPS quality code 2: from the PDS IMPS singleton file SMASSII spectral type spec_B Ch   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002) 7110 Johnpearse           Discovered 1983 Dec. 7 at the Perth Observatory, Bickley. John Marshall Pearse (b. 1930) was a mechanical technician at the Perth Observatory from 1981 to 2006. Before working at the observatory he was employed by the Western Australian state shipping service, and he later built fishing boats for a company he co-owned. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20070402/MPCPages.arc Last Updated: 2007-07-05 [ show close-approach data ] Alternate Designations  1983 XH1 = 1975 BM1 = 1978 RV2 = 1978 TN3 = 1987 QE3  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2013-May-19 18:51 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin