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(2018 RA1)
Classification: Apollo [NEO]          SPK-ID: 3827173
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 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3240791087263182 0.00016951  
a 1.14202311459629 0.00016045 au
q .7719172814730707 8.5137e-05 au
i 8.630773621876006 0.0048783 deg
node 166.1349495208706 9.0986e-05 deg
peri 269.2948578116756 0.0018003 deg
M 95.50548332741816 0.088165 deg
tp 2458882.240354152831
(2020-Feb-02.74035415)
0.084247 TDB
period 445.7699288220714
1.22
0.093945
0.0002572
d
yr
n .8075914877239142 0.0001702 deg/d
Q 1.51212894771951 0.00021245 au
  Orbit Determination Parameters
   # obs. used (total)      56  
   data-arc span      5 days  
   first obs. used      2018-09-06  
   last obs. used      2018-09-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .24095  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-03 06:27:29  

Additional Information
 Earth MOID = .00496489 au 
 Jupiter MOID = 3.76215 au 
 T_jup = 5.433 
[ 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 26.4   .31272 E2018T36 autocmod 2.6n

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