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(2018 RB)
Classification: Apollo [NEO, PHA]          SPK-ID: 3827151
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7320350041633028 1.1077e-07  
a 1.950575413320092 1.1824e-07 au
q .5226859325094824 2.4763e-07 au
i 4.557127441478746 8.185e-06 deg
node 349.2491166846399 6.4908e-05 deg
peri 244.2836891390411 8.4491e-05 deg
M 324.2603071867048 4.0077e-06 deg
tp 2459299.284967211436
(2021-Mar-25.78496721)
1.0496e-05 TDB
period 995.0445959873365
2.72
9.0479e-05
2.477e-07
d
yr
n .3617928296397497 3.2898e-08 deg/d
Q 3.378464894130702 2.048e-07 au
  Orbit Determination Parameters
   # obs. used (total)      253  
   data-arc span      888 days (2.43 yr)  
   first obs. used      2018-09-01  
   last obs. used      2021-02-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      1  
   norm. resid. RMS      .4001  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:38:34  

Additional Information
 Earth MOID = .0239954 au 
 Jupiter MOID = 1.66891 au 
 T_jup = 3.499 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458936.5 (2020-Mar-28.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7321464078705494 1.1073e-07  
q .5224588882179158 2.475e-07 au
tp 2459299.246000455300
(2021-Mar-25.74600046)
1.0493e-05 TDB
node 349.2639831499962 6.4914e-05 deg
peri 244.2726108572145 8.4491e-05 deg
i 4.557189699534187 8.1839e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      253  
   data-arc span      888 days (2.43 yr)  
   first obs. used      2018-09-01  
   last obs. used      2021-02-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      1  
   norm. resid. RMS      .4001  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:38:34  

Additional Information
 Jupiter MOID = 1.66891 au 
 T_jup = 3.499 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.226199850495456E-14 -2.740441064343916E-14 -4.367244710036737E-13 -4.997380119434686E-12 7.707968598911418E-12 4.265776343520309E-13
q -2.740441064343916E-14 6.125503415013697E-14 9.718855548451719E-13 1.118760963733555E-11 -1.725409313337313E-11 -9.556565845215E-13
tp -4.367244710036737E-13 9.718855548451719E-13 1.100934199160522E-10 1.369799639061729E-10 -1.709906703900981E-10 2.411973429942421E-11
node -4.997380119434686E-12 1.118760963733555E-11 1.369799639061729E-10 4.213773725756398E-9 -5.351862982682429E-9 -3.947288828219343E-10
peri 7.707968598911418E-12 -1.725409313337313E-11 -1.709906703900981E-10 -5.351862982682429E-9 7.138699920191249E-9 5.142016433145809E-10
i 4.265776343520309E-13 -9.556565845215E-13 2.411973429942421E-11 -3.947288828219343E-10 5.142016433145809E-10 6.697663718477711E-11

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 21.86   .37909 E2021G84 autocmod 2.6n

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