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(2018 RB2)
Classification: Apollo [NEO]          SPK-ID: 3827318
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3256101291132658 0.00014414  
a 1.378405884166058 0.0002571 au
q .9295829662522626 2.5304e-05 au
i 9.21673436775729 0.0030491 deg
node 342.8726412370404 3.441e-05 deg
peri 312.2133319662767 0.00051781 deg
M 49.91321994512808 0.11687 deg
tp 2458918.544672304759
(2020-Mar-10.04467230)
0.16896 TDB
period 591.1042806439217
1.62
0.16538
0.0004528
d
yr
n .6090295939116406 0.00017039 deg/d
Q 1.827228802079853 0.00034081 au
  Orbit Determination Parameters
   # obs. used (total)      58  
   data-arc span      9 days  
   first obs. used      2018-09-07  
   last obs. used      2018-09-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .40345  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-30 06:02:22  

Additional Information
 Earth MOID = .00212812 au 
 Jupiter MOID = 3.4054 au 
 T_jup = 4.736 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458373.5 (2018-Sep-12.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3257819665293722 0.00014362  
q .929596784941459 2.4535e-05 au
tp 2458327.424549785420
(2018-Jul-27.92454979)
0.0034128 TDB
node 342.8967397003057 5.5161e-05 deg
peri 312.1794998051656 0.00050653 deg
i 9.222603119864267 0.0030451 deg
  Orbit Determination Parameters
   # obs. used (total)      58  
   data-arc span      9 days  
   first obs. used      2018-09-07  
   last obs. used      2018-09-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .40345  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-30 06:02:22  

Additional Information
 Jupiter MOID = 3.4054 au 
 T_jup = 4.736 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.062662360037593E-8 -3.523212163137157E-9 4.900626600263577E-7 -7.219177168262563E-9 7.091275225390471E-8 4.373278897497552E-7
q -3.523212163137157E-9 6.019541479206169E-10 -8.368306585435304E-8 1.225035477612948E-9 -1.206767070726838E-8 -7.470244929241055E-8
tp 4.900626600263577E-7 -8.368306585435304E-8 1.164708237693966E-5 -1.726327311681969E-7 1.691665719573291E-6 1.038989860594607E-5
node -7.219177168262563E-9 1.225035477612948E-9 -1.726327311681969E-7 3.04273050019202E-9 -2.710000435357832E-8 -1.52884294866905E-7
peri 7.091275225390471E-8 -1.206767070726838E-8 1.691665719573291E-6 -2.710000435357832E-8 2.565692385270161E-7 1.502623464891578E-6
i 4.373278897497552E-7 -7.470244929241055E-8 1.038989860594607E-5 -1.52884294866905E-7 1.502623464891578E-6 9.272423497231099E-6

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 27.3   .29342 MPO452097 autocmod 2.6n

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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