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(2018 RB4)
Classification: Apollo [NEO]          SPK-ID: 3827431
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 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1121107255364344 0.0002386  
a 1.063754471628078 0.00020402 au
q .9444961860212279 7.2672e-05 au
i 5.400272033153082 0.013777 deg
node 337.3597416753211 0.0045252 deg
peri 101.5910629066146 0.019839 deg
M 125.9402982530191 0.12048 deg
tp 2458860.308158130127
(2020-Jan-11.80815813)
0.093777 TDB
period 400.7379986647329
1.10
0.11529
0.0003156
d
yr
n .8983425609738215 0.00025844 deg/d
Q 1.183012757234928 0.00022689 au
  Orbit Determination Parameters
   # obs. used (total)      26  
   data-arc span      20 days  
   first obs. used      2018-09-10  
   last obs. used      2018-09-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .26153  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Sep-30 06:45:38  

Additional Information
 Earth MOID = .0262375 au 
 Jupiter MOID = 3.91751 au 
 T_jup = 5.786 
[ 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 26.9   .40279 E2018S72 autocmod 2.6n

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2006-Sep-07 01:33 14:53 Earth 0.45238836789158 0.301549421595949 0.603332144526015 16.1342947828989 16.1339297299568 2453985.564263802 892.538641904379 7532174.85500019 219.446638443422 -2.5122721901632 10605.7905110085 T 4 CATAB v2.0e-lin.ifort 2018-Sep-30 06:51:23 2018-Dec-11 17:23
2008-Feb-15 21:09 05:07 Earth 0.0272483608128018 0.0268060841602407 0.0721820263397954 3.79908461229626 3.77325774505504 2454512.381008503 306.646585228591 3103267.46271043 123.697006781465 79.6231040143965 33266.9590961749 T 4 CATAB v2.0e-lin.ifort 2018-Sep-30 06:51:23 2018-Dec-11 17:23
2018-Sep-19 16:50 00:01 Earth 0.0457351484659824 0.0454016263641037 0.0460686264717151 3.60167892491833 3.58546695462655 2458381.201685625 1.32794025013908 16478.1581111525 58.5769809437663 -0.458411241644982 250.103265492918 T 4 CATAB v2.0e-lin.ifort 2018-Sep-30 06:51:23 2018-Dec-11 17:23
2019-Mar-24 18:53 05:07 Earth 0.133358123743346 0.132535498556147 0.134180890690231 3.03530544608717 3.02871579891925 2458567.286545567 307.363785972587 41594.9530974473 497.191284660027 -11.141673968172 3684.67699484961 T 4 CATAB v2.0e-lin.ifort 2018-Sep-30 06:51:23 2018-Dec-11 17:23
2020-Mar-05 09:48 04:35 Earth 0.46989640837479 0.464791178156856 0.475001675717219 16.9095873741568 16.9092520371161 2458913.908490951 274.957894512809 254663.299206641 162.87325330163 1.56164536026888 9165.73282931937 T 4 CATAB v2.0e-lin.ifort 2018-Sep-30 06:51:23 2018-Dec-11 17:23
2029-Sep-18 19:20 2_00:29 Earth 0.174018675326394 0.117932660704953 0.231868072134305 8.03036108474299 8.02845416246565 2462398.305476218 2909.29314347287 2972366.41074822 178.390756429244 -16.2022683535433 27262.3845854913 T 4 CATAB v2.0e-lin.ifort 2018-Sep-30 06:51:23 2018-Dec-11 17:23
2031-Feb-25 13:41 2_22:21 Earth 0.283823289320679 0.221974266900154 0.345736405939735 11.4456068790546 11.4447866388275 2462923.070136579 4221.04761871729 3093080.56074661 129.05918534777 -3.93659921265295 16481.3602735886 T 4 CATAB v2.0e-lin.ifort 2018-Sep-30 06:51:23 2018-Dec-11 17:23
2040-Sep-10 01:36 3_18:48 Earth 0.379473578979813 0.294496585832114 0.464786823456191 13.9812935911975 13.9807913743726 2466407.566813122 5448.15950333452 4283053.72561682 199.648907241111 -7.38930845228985 27551.617564682 T 4 CATAB v2.0e-lin.ifort 2018-Sep-30 06:51:23 2018-Dec-11 17:23
2042-Feb-16 15:29 3_00:18 Earth 0.0751262705863732 0.0266491255555102 0.162148418015204 5.51148971006258 5.50505090491861 2466932.145349630 4337.80914016338 4472728.00943032 128.635591342937 -20.8712230294412 24495.4311095318 T 4 CATAB v2.0e-lin.ifort 2018-Sep-30 06:51:23 2018-Dec-11 17:23
2051-Sep-07 09:21 3_08:20 Earth 0.471072009724827 0.428099463488462 0.514121038430279 16.6562456046037 16.6559060165782 2470421.889881615 4820.40888648971 2165560.16376604 210.398224355019 -7.92574805472147 36183.2089911045 T 4 CATAB v2.0e-lin.ifort 2018-Sep-30 06:51:23 2018-Dec-11 17:23
2053-Feb-14 15:33 15:19 Earth 0.027888056005187 0.0265791191570388 0.0816970016114666 3.715941456393 3.69014051239649 2470948.148223113 919.130301849137 3436193.86471326 123.887487715066 72.3474452930446 33860.4585417137 T 4 CATAB v2.0e-lin.ifort 2018-Sep-30 06:51:23 2018-Dec-11 17:23
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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