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(2018 RR)
Classification: Apollo [NEO]          SPK-ID: 3827162
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 .1780289842190542 0.00014005  
a 1.100738293932365 0.00013801 au
q .9047749735725716 4.0752e-05 au
i 13.71909172326142 0.0082595 deg
node 164.2985967121511 0.00012264 deg
peri 106.9762989998903 0.011312 deg
M 233.6598245149593 0.12522 deg
tp 2459148.534695671576
(2020-Oct-26.03469567)
0.17457 TDB
period 421.8174483070714
1.15
0.07933
0.0002172
d
yr
n .8534497599490716 0.00016051 deg/d
Q 1.296701614292159 0.00016258 au
  Orbit Determination Parameters
   # obs. used (total)      32  
   data-arc span      3 days  
   first obs. used      2018-09-06  
   last obs. used      2018-09-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .47221  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Sep-09 07:02:07  

Additional Information
 Earth MOID = .00481482 au 
 Jupiter MOID = 3.79663 au 
 T_jup = 5.607 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458368.5 (2018-Sep-07.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1802819421048387 0.00013765  
q .9042262840281915 3.989e-05 au
tp 2458305.213943453298
(2018-Jul-05.71394345)
0.015183 TDB
node 164.3242631546012 8.8532e-05 deg
peri 107.2041548807765 0.010759 deg
i 13.7583061573659 0.0082038 deg
  Orbit Determination Parameters
   # obs. used (total)      32  
   data-arc span      3 days  
   first obs. used      2018-09-06  
   last obs. used      2018-09-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .47221  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Sep-09 07:02:07  

Additional Information
 Jupiter MOID = 3.79663 au 
 T_jup = 5.607 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.894749400695573E-8 -5.487685685098651E-9 2.089259201522549E-6 1.216961257436194E-8 1.479251525828143E-6 1.129051836055042E-6
q -5.487685685098651E-9 1.59118139786546E-9 -6.045788321012865E-7 -3.525799769209715E-9 -4.277201906858436E-7 -3.270725479952153E-7
tp 2.089259201522549E-6 -6.045788321012865E-7 .0002305266353376461 1.341488514042084E-6 .000163317387286866 .0001244730482032241
node 1.216961257436194E-8 -3.525799769209715E-9 1.341488514042084E-6 7.838000958457113E-9 9.495591429993397E-7 7.255751424770533E-7
peri 1.479251525828143E-6 -4.277201906858436E-7 .000163317387286866 9.495591429993397E-7 .0001157660011032066 8.811636428671833E-5
i 1.129051836055042E-6 -3.270725479952153E-7 .0001244730482032241 7.255751424770533E-7 8.811636428671833E-5 6.730198643582275E-5

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 27.6   .32331 MPO452091 autocmod 2.6n

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