+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   70288 (1999 RS118) Classification: Main-belt Asteroid          SPK-ID: 2070288 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 29 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1354804169321448 3.0002e-08   a 2.376255133073817 9.3866e-09 au q 2.054319096907827 7.2354e-08 au i 5.759018922569799 4.1023e-06 deg node 209.3995431627278 3.3836e-05 deg peri 93.10131428898121 3.7874e-05 deg M 258.739516064585 1.9307e-05 deg tp 2459376.835793898846 (2021-Jun-11.33579390) 7.2941e-05 TDB period 1337.944285255398 3.66 7.9277e-06 2.17e-08 d yr n .2690695001034967 1.5943e-09 deg/d Q 2.698191169239807 1.0658e-08 au   Orbit Determination Parameters    # obs. used (total)      1063      data-arc span      10078 days (27.59 yr)      first obs. used      1992-10-18      last obs. used      2020-05-22      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55382      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 22:01:19   Additional Information  Earth MOID = 1.04899 au   Jupiter MOID = 2.51553 au   T_jup = 3.522  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.3   n/a MPO417313   diameter diameter 1.917 km 0.311 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.438   0.092 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   70288 (1999 RS118)          Discovered 1999-Sep-09 by LINEAR at Socorro Reference: 20031109/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1999 RS118 = 1991 GS14  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-27 21:18 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin