+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   17507 (1992 HH5) Classification: Main-belt Asteroid          SPK-ID: 2017507 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ 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 .2131240174228073 6.1666e-08   a 2.322389502281949 1.9055e-08 AU q 1.827432521535066 1.4768e-07 AU i 3.269854792078859 8.343e-06 deg node 344.8547375765784 0.00010438 deg peri 280.1992430622295 0.00010854 deg M 292.7079813408426 3.717e-05 deg tp 2456642.136241738688 (2013-Dec-15.63624174) 0.00013542 JED period 1292.709726342709 3.54 1.591e-05 4.356e-08 d yr n .2784847925748188 3.4275e-09 deg/d Q 2.817346483028832 2.3117e-08 AU   Orbit Determination Parameters    # obs. used (total)      771      data-arc span      7669 days (21.00 yr)      first obs. used      1992-04-05      last obs. used      2013-04-04      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .55483      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 14:15:23   Additional Information  Earth MOID = .815409 AU   T_jup = 3.544  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.8 mag n/a PDS3 (MPO 4070)   17507 (1992 HH5)          Discovered 1992-Apr-24 by Debehogne, H. at La Silla (809) Reference: 20001013/Numbers.arc Last Updated: 2004-04-19 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-20 11:48 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin