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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6212846850141256 0.00045632  
a 2.631211881635507 0.0031651 au
q .9964802365481662 2.2725e-06 au
i 3.178114802517283 0.0015632 deg
node 351.3649820426937 0.0004029 deg
peri 14.80004479209331 0.001262 deg
M 141.5865868494215 0.25492 deg
tp 2458387.371122747459
(2018-Sep-25.87112275)
0.0024199 TDB
period 1558.949902829843
4.27
2.8129
0.007701
d
yr
n .2309246752230585 0.00041667 deg/d
Q 4.265943526722848 0.0051315 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 = .0023601 au 
 Jupiter MOID = 1.20795 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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