+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   390854 (2004 RJ208) Classification: Main-belt Asteroid          SPK-ID: 2390854 [ 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 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2913091359637454 7.8316e-08   a 3.15749277424196 4.4976e-08 au q 2.237686282365765 2.7052e-07 au i 13.13083329187787 6.123e-06 deg node 261.3056690861782 2.8994e-05 deg peri 52.12817019788822 3.155e-05 deg M 309.6722999177554 1.1984e-05 deg tp 2459286.994677629778 (2021-Mar-13.49467763) 7.2251e-05 TDB period 2049.330364355485 5.61 4.3786e-05 1.199e-07 d yr n .1756671380376585 3.7533e-09 deg/d Q 4.077299266118155 5.8078e-08 au   Orbit Determination Parameters    # obs. used (total)      247      data-arc span      5769 days (15.79 yr)      first obs. used      2004-08-29      last obs. used      2020-06-15      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .50734      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 16:37:53   Additional Information  Earth MOID = 1.2504 au   Jupiter MOID = 1.37721 au   T_jup = 3.099  [ 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 15.5   n/a MPO397417   diameter diameter 5.826 km 0.688 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   geometric albedo albedo 0.047   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   390854 (2004 RJ208)          Discovered 2004-Sep-11 by LINEAR at Socorro Reference: Last Updated: 2014-04-17 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 1955-Sep-30 11:26 00:05 Jupiter 1.7013474403997 1.70134265900685 1.70135222182098 2.79350659133426 2.60920892387128 2435380.976530899 5.43401116141823 449.309706936297 86.0248891579887 50.4824853351079 1100959.74923519 T 14 CATAB v2.0f-lin.ifort 2020-Nov-12 16:37:54 2020-Nov-12 16:37 1966-Oct-12 02:14 00:03 Jupiter 1.37227930170422 1.37227824059185 1.37228036282852 3.3082892230057 3.11613577834445 2439410.593365763 2.81714413932461 401.889985610306 44.7913835512786 85.3885828595385 1700730.07473838 T 14 CATAB v2.0f-lin.ifort 2020-Nov-12 16:37:54 2020-Nov-12 16:37 1977-Nov-21 12:24 00:02 Jupiter 1.46486532329711 1.46486355737338 1.46486708927538 3.5117870659682 3.34308201414008 2443469.016335447 2.20359825456697 483.546107332025 20.0051674512986 -80.3975228026548 1940010.64673199 T 14 CATAB v2.0f-lin.ifort 2020-Nov-12 16:37:54 2020-Nov-12 16:37 1988-Sep-27 12:22 00:02 Jupiter 1.95741065993862 1.95740894706413 1.95741237281667 4.01014301282111 3.90074287181764 2447432.014972589 1.72476419871189 176.037468458466 35.4403903047023 -65.4057075720956 1841823.04598777 T 14 CATAB v2.0f-lin.ifort 2020-Nov-12 16:37:54 2020-Nov-12 16:37 2085-Dec-23 07:14 00:05 Jupiter 1.55836099755579 1.55835721707812 1.55836477806057 2.84287597491964 2.64478267274839 2482947.801345236 4.6017934197673 405.434324138726 70.6469707111948 57.8932624890569 1197891.83101615 T 14 CATAB v2.0f-lin.ifort 2020-Nov-12 16:37:54 2020-Nov-12 16:37 2097-Jan-22 01:22 00:05 Jupiter 1.39947244373428 1.39947165419639 1.39947323328753 3.25362546427026 3.06195858119521 2486995.556746845 4.86889343917526 710.022497136128 37.3924653729124 -89.7326331761104 1705221.60329193 T 14 CATAB v2.0f-lin.ifort 2020-Nov-12 16:37:54 2020-Nov-12 16:37 2108-Jan-26 16:07 00:07 Jupiter 1.65555886160183 1.65555234420893 1.65556537935911 3.68729872017781 3.54583209111365 2491016.171819238 7.46888259842627 1295.3764274653 22.7676607868279 -76.2657771272746 1971642.10160368 T 14 CATAB v2.0f-lin.ifort 2020-Nov-12 16:37:54 2020-Nov-12 16:37 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Feb-27 22:16 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin