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(2018 RQ4)
Classification: Apollo [NEO]          SPK-ID: 3827570
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

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 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .40374489706894 0.00050378  
a 1.613566632782668 0.0019227 au
q .9620973387159537 0.00033352 au
i .3555977568854294 0.0062964 deg
node 262.1492036287779 0.43843 deg
peri 131.5067500242234 0.58034 deg
M 21.75837154482276 0.3176 deg
tp 2459155.251657902881
(2020-Nov-01.75165790)		 0.74136 TDB
period 748.6499217740819
2.05		 1.3381
0.003664		 d
yr
n .4808656082497211 0.00085948 deg/d
Q 2.265035926849382 0.002699 au
   Orbit Determination Parameters
   # obs. used (total)      38  
   data-arc span      11 days  
   first obs. used      2018-09-07  
   last obs. used      2018-09-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .57409  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Aug-25 05:25:30  

Additional Information
 Earth MOID = .00252354 au 
 Jupiter MOID = 3.17616 au 
 T_jup = 4.244 
[ 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   .42175 MPO452105 autocmod 2.6n

[ hide close-approach data ]
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
2016-Aug-23 05:19 2_15:27 Earth 0.310078535232639 0.265849769612422 0.354310197416693 16.4048442765562 16.4043204645189 2457623.721369584 3807.20342516811 2206088.19975448 25.2085970578014 -1.30902835472588 34662.7705969033 T 6 CATAB v2.0f-lin.ifort 2019-Aug-25 05:25:32 2019-Aug-25 05:25
2018-Sep-17 22:44 < 00:01 Earth 0.030440645238131 0.030343052414763 0.0305382362426447 7.7782818468651 7.76702052621187 2458379.447438456 0.11077233825309 4852.32781867816 5.61169588537727 0.0857691006110026 557.971261687252 T 6 CATAB v2.0f-lin.ifort 2019-Aug-25 05:25:32 2019-Aug-25 05:25
2020-Nov-26 04:41 8_01:42 Earth 0.0208558171837912 0.00285411045178811 0.0572555901582887 7.43856924406299 7.42137441041999 2459179.694905144 11622.3877826679 1821299.49542841 60.2438146205773 -8.00684866592657 6667.81655572523 T 6 CATAB v2.0f-lin.ifort 2019-Aug-25 05:25:32 2019-Aug-25 05:25
2022-Dec-23 10:00 1_11:49 Earth 0.324106780542416 0.300420617121897 0.347793823164119 16.9276335257636 16.9271478636543 2459936.916987719 2149.18654599592 1181455.04473432 117.983162509089 1.36849981809165 8343.46167010143 T 6 CATAB v2.0f-lin.ifort 2019-Aug-25 05:25:32 2019-Aug-25 05:25
2063-Aug-13 21:16 6_00:59 Earth 0.467358106383388 0.422086636288936 0.512750396420645 3.01697702264942 3.01508674043216 2474780.386303196 8699.04492700054 2291384.5980181 79.8475133104175 9.52253865447821 37751.1555634326 T 6 CATAB v2.0f-lin.ifort 2019-Aug-25 05:25:32 2019-Aug-25 05:25
2063-Dec-17 14:56 5_00:43 Earth 0.2183479113217 0.160704945489945 0.276100805172495 13.6933379101999 13.6924467246787 2474906.122451994 7243.23704199269 2887517.92613823 84.867792321669 4.72823306653936 26685.7059630741 T 6 CATAB v2.0f-lin.ifort 2019-Aug-25 05:25:32 2019-Aug-25 05:25
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