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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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458376.5 (2018-Sep-15.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4035331909804564 0.0004768  
q .9611396073450065 2.7188e-05 au
tp 2458410.739319850146
(2018-Oct-19.23931985)
0.0075258 TDB
node 263.362132170284 0.012775 deg
peri 130.0163936738776 0.013471 deg
i .3499978359828388 0.00036544 deg
  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
 Jupiter MOID = 3.17616 au 
 T_jup = 4.244 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.27338698414568E-7 -1.295704140563104E-8 -3.587095574569337E-6 5.784555924589878E-6 -6.116387217676092E-6 1.742434870380139E-7
q -1.295704140563104E-8 7.39179886785762E-10 2.042828026108933E-7 -3.28357550398397E-7 3.470559653261313E-7 -9.930963160907353E-9
tp -3.587095574569337E-6 2.042828026108933E-7 5.663706845122791E-5 -9.157768089427138E-5 9.686326229779276E-5 -2.749300938066712E-6
node 5.784555924589878E-6 -3.28357550398397E-7 -9.157768089427138E-5 .0001632119069324082 -.0001720590703046751 4.433462988038681E-6
peri -6.116387217676092E-6 3.470559653261313E-7 9.686326229779276E-5 -.0001720590703046751 .0001814564161750943 -4.687763324982453E-6
i 1.742434870380139E-7 -9.930963160907353E-9 -2.749300938066712E-6 4.433462988038681E-6 -4.687763324982453E-6 1.335495780600241E-7

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

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