+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   55565 (2002 AW197) Classification: TransNeptunian Object          SPK-ID: 2055565 [ 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 10 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1274886723856855 0.00023444   a 47.34594175130332 0.0078316 AU q 41.30987049457966 0.013756 AU i 24.33652786996248 0.00078036 deg node 297.4154622702604 0.00061944 deg peri 294.3424971915679 0.058698 deg M 289.4644309657513 0.054252 deg tp 2479715.114535787830 (2077-Feb-15.61453579) 12.543 JED period 118993.3156817415 325.79 29.524 0.08083 d yr n .00302538002187327 7.5065e-07 deg/d Q 53.38201300802699 0.00883 AU   Orbit Determination Parameters    # obs. used (total)      112      data-arc span      4102 days (11.23 yr)      first obs. used      1997-12-29      last obs. used      2009-03-23      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      3      fit RMS      .26031      data source      ORB      producer      Otto Matic      solution date      2011-Sep-14 19:07:46   Additional Information  Earth MOID = 40.3742 AU   T_jup = 5.562  [ 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 3.2622 mag .33193 10 autocmod 2.5a rotation period rot_per 8.86 h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-01) Result based on less than full coverage, so that the period may be wrong by 30 percent or so. Published Reference List: [Ortiz, J.L.; Gutierrez, P.J.; Santos-Sanz, P.; Casanova, V.; Sota, A. (2006) Astron. Astrophys. 447, 1131-1144.] [Thirouin, A.; Ortiz, J.L.; Duffard, R.; Santos-Sanz, P.; et al. (2010) Astron. Astrophys. 522, A93.] 55565 (2002 AW197)          Discovered 2002-Jan-10 by Palomar at Palomar (675) Reference: 20030216/Numbers.arc Last Updated: 2004-04-19 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-25 23:32 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin