+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   126154 (2001 YH140) Classification: TransNeptunian Object          SPK-ID: 2126154 [ 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 9 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1457013324811535 0.00011782   a 42.58687030279946 0.0071211 AU q 36.38190655347952 0.0011634 AU i 11.0610696586923 0.00031487 deg node 108.8195621000151 0.00012491 deg peri 355.3457514662983 0.023151 deg M 16.832487889739 0.017157 deg tp 2451654.171157504286 (2000-Apr-19.67115750) 4.7956 JED period 101510.7448459867 277.92 25.461 0.06971 d yr n .003546422603303683 8.8952e-07 deg/d Q 48.79183405211941 0.0081587 AU   Orbit Determination Parameters    # obs. used (total)      121      data-arc span      4069 days (11.14 yr)      first obs. used      2001-12-18      last obs. used      2013-02-07      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      3      fit RMS      .35692      data source      ORB      producer      Otto Matic      solution date      2013-Mar-29 14:21:39   Additional Information  Earth MOID = 35.3983 AU   T_jup = 5.678  [ 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 5.5 mag n/a MPC43467   rotation period rot_per 13.25 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: [Sheppard, S.S. (2007) Astron. J. 134, 787-798.] [Thirouin, A.; Ortiz, J.L.; Duffard, R.; Santos-Sanz, P.; et al. (2010) Astron. Astrophys. 522, A93.] 126154 (2001 YH140)          Discovered 2001-Dec-18 by Trujillo, C. A., Brown, M. E. at Palomar (675) Reference: 20060314/Numbers.arc Last Updated: 2006-03-23 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-21 19:50 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin