+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   385185 (1993 RO) Classification: TransNeptunian Object          SPK-ID: 2385185 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 6 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1984022057421995 0.00019163   a 39.18338221887507 0.011818 au q 31.40931275821058 0.0019791 au i 3.714185638398098 0.00016439 deg node 170.2861538173021 0.0013134 deg peri 187.7676803255544 0.020899 deg M 33.76471013865043 0.028754 deg tp 2450597.935928980633 (1997-May-29.43592898) 3.4176 TDB period 89588.30249528328 245.28 40.531 0.111 d yr n .004018381752673052 1.818e-06 deg/d Q 46.95745167953956 0.014163 au   Orbit Determination Parameters    # obs. used (total)      23      data-arc span      9568 days (26.20 yr)      first obs. used      1994-08-10      last obs. used      2020-10-20      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      4      norm. resid. RMS      .57804      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 17:21:59   Additional Information  Earth MOID = 30.4058 au   Jupiter MOID = 26.4469 au   T_jup = 5.501  [ 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 8.4   n/a MPC41519   385185 (1993 RO)          Discovered 1993-Sep-14 by Jewitt, D. C., Luu, J. X. at Mauna Kea Reference: Last Updated: 2014-02-19 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2021-Mar-02 18:47 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin