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JPL Small-Body Database Browser
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(2018 RR4)
Classification: Apollo [NEO]          SPK-ID: 3827571
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer 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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6210219491034182 0.00045635  
a 2.631881572367424 0.003166 au
q .9974253484864373 1.6458e-06 au
i 3.176726144488522 0.0015609 deg
node 351.3708675962803 0.0004301 deg
peri 14.81753084267521 0.0012704 deg
M 49.21817696009089 0.088232 deg
tp 2458387.283424185664
(2018-Sep-25.78342419)
0.0025334 TDB
period 1559.54511186794
4.27
2.814
0.007704
d
yr
n .230836541540508 0.00041652 deg/d
Q 4.266337796248411 0.0051321 au
  Orbit Determination Parameters
   # obs. used (total)      27  
   data-arc span      2 days  
   first obs. used      2018-09-11  
   last obs. used      2018-09-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .67972  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Sep-16 06:58:47  

Additional Information
 Earth MOID = .00239355 au 
 Jupiter MOID = 1.20417 au 
 T_jup = 3.090 
[ 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 27.1   .2621 MPO452106 autocmod 2.6n

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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