+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   17086 Ruima (1999 JH18) Classification: Main-belt Asteroid          SPK-ID: 2017086 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 30 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1470170799415377 3.4924e-08   a 2.394001382503026 9.8299e-09 au q 2.042042289871427 8.5053e-08 au i 1.741006765065339 4.3101e-06 deg node 235.0445248900076 0.00012409 deg peri 271.2330607131091 0.00012504 deg M 301.9960840684299 1.7449e-05 deg tp 2459218.491638566229 (2021-Jan-03.99163857) 6.6342e-05 TDB period 1352.960203177065 3.70 8.333e-06 2.281e-08 d yr n .2660832145355321 1.6388e-09 deg/d Q 2.745960475134625 1.1275e-08 au   Orbit Determination Parameters    # obs. used (total)      1495      data-arc span      9923 days (27.17 yr)      first obs. used      1993-09-15      last obs. used      2020-11-15      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .50342      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 03:04:31   Additional Information  Earth MOID = 1.05479 au   Jupiter MOID = 2.2651 au   T_jup = 3.515  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.7   n/a MPO302170   diameter diameter 3.508 km 0.095 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.189   0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   17086 Ruima           Discovered 1999 May 10 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Rui Ma (b. 1985) was awarded fourth place in the 2003 Intel International Science and Engineering Fair for his computer science team project. He attends the Vincent Massey Secondary School, Windsor, Ontario, Canada. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20040614/MPCPages.arc Last Updated: 2009-12-11 Alternate Designations  1999 JH18 = 1993 RD5  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-25 21:53 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin