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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7319746466073866 0.00022085  
a 1.949718823946918 0.0012498 au
q .5225740768046031 9.5632e-05 au
i 4.555930110941116 0.0018585 deg
node 349.2585112413034 0.00074935 deg
peri 244.2784977377223 0.00056659 deg
M 252.0682606941286 0.24539 deg
tp 2459298.628214335776
(2021-Mar-25.12821434)
0.96448 TDB
period 994.3892116546383
2.72
0.95616
0.002618
d
yr
n .3620312808914823 0.00034811 deg/d
Q 3.376863571089232 0.0021647 au
  Orbit Determination Parameters
   # obs. used (total)      184  
   data-arc span      31 days  
   first obs. used      2018-09-01  
   last obs. used      2018-10-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .36388  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 06:45:00  

Additional Information
 Earth MOID = .0241287 au 
 Jupiter MOID = 1.67151 au 
 T_jup = 3.500 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458369.5 (2018-Sep-08.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7322321884090806 0.000221  
q .5219853388371258 9.642e-05 au
tp 2458304.240822488239
(2018-Jul-04.74082249)
0.0084975 TDB
node 349.2968512310241 0.00072553 deg
peri 244.2258373635353 0.00052944 deg
i 4.557974609597821 0.0018626 deg
  Orbit Determination Parameters
   # obs. used (total)      184  
   data-arc span      31 days  
   first obs. used      2018-09-01  
   last obs. used      2018-10-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .36388  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 06:45:00  

Additional Information
 Jupiter MOID = 1.67151 au 
 T_jup = 3.500 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.884087948898194E-8 -2.13062078939144E-8 1.877511769797707E-6 -1.584042747700775E-7 1.004415527385133E-7 4.110305804308644E-7
q -2.13062078939144E-8 9.296901923866244E-9 -8.18887111141021E-7 6.911065099396737E-8 -4.345931791539116E-8 -1.793634748081168E-7
tp 1.877511769797707E-6 -8.18887111141021E-7 7.220800076601329E-5 -6.087485977923191E-6 3.897244259122847E-6 1.578753796650945E-5
node -1.584042747700775E-7 6.911065099396737E-8 -6.087485977923191E-6 5.263888844030262E-7 -3.362667240553754E-7 -1.341130607261308E-6
peri 1.004415527385133E-7 -4.345931791539116E-8 3.897244259122847E-6 -3.362667240553754E-7 2.803050023421981E-7 8.389715918269763E-7
i 4.110305804308644E-7 -1.793634748081168E-7 1.578753796650945E-5 -1.341130607261308E-6 8.389715918269763E-7 3.469147300974954E-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 21.8   .37909 E2018T49 autocmod 2.6n

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