+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   26308 (1998 SM165) Classification: TransNeptunian Object          SPK-ID: 2026308 [ 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 .3708598956382789 9.5982e-05   a 47.85555215248473 0.0098573 AU q 30.10784707550203 0.001637 AU i 13.49122427174391 0.00017829 deg node 183.1219089050693 0.00021213 deg peri 131.6507559751169 0.01131 deg M 41.60571627489374 0.017373 deg tp 2442425.641268823692 (1975-Jan-13.14126882) 1.5238 JED period 120919.661855679 331.06 37.361 0.1023 d yr n .002977183317214947 9.1986e-07 deg/d Q 65.60325722946743 0.013513 AU   Orbit Determination Parameters    # obs. used (total)      83      data-arc span      9952 days (27.25 yr)      first obs. used      1982-10-12      last obs. used      2010-01-10      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      3      fit RMS      .57834      data source      ORB      producer      Otto Matic      solution date      2012-May-09 12:13:20   Additional Information  Earth MOID = 29.1102 AU   T_jup = 5.586  [ 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 5.8 mag n/a PDS3 (MPO 13953)   26308 (1998 SM165)          Discovered 1998-Sep-16 by Danzl, N. at Steward (691) Reference: 20010705/Numbers.arc Last Updated: 2004-04-19 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-22 03:18 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin