+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2018 RA) Classification: Apollo [NEO]          SPK-ID: 3827149 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 4 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .4637771836317947 0.00020366   a 1.882643981247045 0.0007165 au q 1.009516657842942 8.1608e-07 au i 4.428898804363635 0.0014418 deg node 336.4009594865755 4.0715e-05 deg peri 13.49340568997305 0.00078599 deg M 239.6012454955411 0.13639 deg tp 2459316.051479452727 (2021-Apr-11.55147945) 0.53761 TDB period 943.5191673745642 2.58 0.53863 0.001475 d yr n .3815502773533851 0.00021782 deg/d Q 2.755771304651149 0.0010488 au   Orbit Determination Parameters    # obs. used (total)      68      data-arc span      3 days      first obs. used      2018-09-01      last obs. used      2018-09-04      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      7      norm. resid. RMS      .38171      source      ORB      producer      Otto Matic      solution date      2018-Sep-14 07:26:56   Additional Information  Earth MOID = .0076268 au   Jupiter MOID = 2.68436 au   T_jup = 3.826  [ hide covariance matrix ] Orbital Elements at Epoch 2458364.5 (2018-Sep-03.0) TDB Reference: JPL 4 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .4663937422904333 0.00020146   q 1.010286315335478 1.6445e-06 au tp 2458372.406437081048 (2018-Sep-10.90643708) 0.0012297 TDB node 336.4801455131844 0.00010248 deg peri 13.35484312210818 0.0006321 deg i 4.458212838154331 0.0014128 deg   Orbit Determination Parameters    # obs. used (total)      68      data-arc span      3 days      first obs. used      2018-09-01      last obs. used      2018-09-04      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      7      norm. resid. RMS      .38171      source      ORB      producer      Otto Matic      solution date      2018-Sep-14 07:26:56   Additional Information  Jupiter MOID = 2.68436 au   T_jup = 3.826  Orbit Covariance (6×6)   e q tp node peri i e 4.058549187690077E-8 3.289310932662186E-10 -2.446567915782518E-7 -1.919218111802171E-8 -1.16036807288833E-7 2.845279542801554E-7 q 3.289310932662186E-10 2.704266936559036E-12 -2.020529046141492E-9 -1.497136511262966E-10 -9.907851871283725E-10 2.311038962575486E-9 tp -2.446567915782518E-7 -2.020529046141492E-9 1.512247819651957E-6 1.097240194083631E-7 7.496759021305503E-7 -1.720175060364231E-6 node -1.919218111802171E-8 -1.497136511262966E-10 1.097240194083631E-7 1.050155050328674E-8 4.638873066870913E-8 -1.332438603837401E-7 peri -1.16036807288833E-7 -9.907851871283725E-10 7.496759021305503E-7 4.638873066870913E-8 3.995529455040128E-7 -8.206822036691127E-7 i 2.845279542801554E-7 2.311038962575486E-9 -1.720175060364231E-6 -1.332438603837401E-7 -8.206822036691127E-7 1.996089124859521E-6 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 26.7   .21998 MPO452087 autocmod 2.6n [ 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 1917-Sep-16 14:09 6_21:24 Earth 0.0259418666200638 0.0160168916054545 0.0363867753979996 6.89349461382268 6.87857897715941 2421488.089780211 9924.07103603387 540112.273906284 98.573244586813 -18.2847776741534 11952.1802685751 T 4 CATAB v2.0e-lin.ifort 2018-Sep-14 07:27:48 2018-Dec-11 17:22 2005-Oct-25 08:07 9_18:41 Earth 0.247221818613449 0.116204985277228 0.3834474678268 13.9654073183942 13.9646355553951 2453668.837934267 14080.9588211296 6900475.42586694 61.4431003941842 -12.651265973129 107499.70191721 T 4 CATAB v2.0e-lin.ifort 2018-Sep-14 07:27:48 2018-Dec-11 17:22 2006-Jan-23 00:08 9_08:22 Mars 0.0889504751096612 0.0852021196525549 0.159315349542842 8.85558031138938 8.85521685709806 2453758.505308011 13462.2782719572 5439374.80075348 197.517100465441 73.315773536763 66101.1564023988 T 4 CATAB v2.0e-lin.ifort 2018-Sep-14 07:27:48 2018-Dec-11 17:22 2018-Sep-01 09:17 < 00:01 Earth 0.00779440725166346 0.00778559269788773 0.00780322152376065 6.91771916812705 6.86812554050517 2458362.886757131 0.0620075249798493 433.240000269972 8.24257602950073 1.65106107373024 1746.10041354784 T 4 CATAB v2.0e-lin.ifort 2018-Sep-14 07:27:48 2018-Dec-11 17:22 2018-Sep-01 14:53 < 00:01 Moon 0.00713909420275981 0.00713069758287922 0.00714749084605811 6.46155926491796 6.46084876799042 2458363.120094037 0.416897695118155 419.202446680263 7.29594276737808 -3.04081458917091 7093.61695177281 T 4 CATAB v2.0e-lin.ifort 2018-Sep-14 07:27:48 2018-Dec-11 17:22 2026-Oct-06 03:35 5_01:50 Mars 0.083549269604152 0.08247412524865 0.114225198480294 9.44185876217828 9.44149583927519 2461319.649609066 7310.14224428771 3275553.38262571 182.824779244751 -80.8145271540776 67967.2245644425 T 4 CATAB v2.0e-lin.ifort 2018-Sep-14 07:27:48 2018-Dec-11 17:22 2031-Jul-11 21:49 7_21:46 Earth 0.453233855829861 0.315578168012245 0.590995555143192 20.2895903238658 20.2893005762732 2463059.408828805 11386.2442327026 6875670.2493676 162.268546594121 2.76732410274473 17527.1181872925 T 4 CATAB v2.0e-lin.ifort 2018-Sep-14 07:27:48 2018-Dec-11 17:22 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Jan-20 01:34 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin