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(2018 RM4)
Classification: Apollo [NEO]          SPK-ID: 3827567
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 2458372.5 (2018-Sep-11.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5851495472701211 0.0025751  
a 2.205606028724214 0.013107 au
q .9149966595599902 0.00024231 au
i 1.592564016419957 0.0054416 deg
node 241.5341816416189 0.063101 deg
peri 156.4111626503391 0.061569 deg
M 348.1760956615683 0.11512 deg
tp 2458411.796036070772
0.032336 TDB
period 1196.438382835759
n .3008930548907499 0.0026821 deg/d
Q 3.496215397888437 0.020776 au
  Orbit Determination Parameters
   # obs. used (total)      34  
   data-arc span      4 days  
   first obs. used      2018-09-10  
   last obs. used      2018-09-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      8  
   norm. resid. RMS      .3195  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Sep-14 07:27:49  

Additional Information
 Earth MOID = .00597474 au 
 Jupiter MOID = 1.93944 au 
 T_jup = 3.415 
[ 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 25.6   .52076 MPO452105 autocmod 2.6n

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
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
2018-Sep-18 17:32 < 00:01 Earth 0.0282142322307047 0.0278838286015229 0.0285446240884374 11.1720471570443 11.1635909472039 2458380.230292193 0.738742517882309 16450.498531373 36.1295266976608 0.0464689768658709 170.43384720942 T 2 CATAB v2.0e-lin.ifort 2018-Sep-14 07:28:34 2018-Dec-11 17:23
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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