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(2018 RA)
Classification: Apollo [NEO]          SPK-ID: 3827149
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


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 
[ show covariance matrix ]

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 ]
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