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(2018 XB5)
Classification: Apollo [NEO]          SPK-ID: 3836914
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3104401332397138 0.00036053  
a 1.41240135169078 0.00074759 au
q .9739352878839423 6.3263e-06 au
i 25.88129735937038 0.015297 deg
node 263.0853700056894 7.73e-06 deg
peri 151.3799159187717 0.0097277 deg
M 199.8147096734106 0.45173 deg
tp 2459669.307148132813
(2022-Mar-30.80714813)
0.98592 TDB
period 613.1060669027652
1.68
0.48678
0.001333
d
yr
n .5871740950446243 0.00046619 deg/d
Q 1.850867415497617 0.00097968 au
  Orbit Determination Parameters
   # obs. used (total)      83  
   data-arc span      14 days  
   first obs. used      2018-12-14  
   last obs. used      2018-12-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .44849  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:56:08  

Additional Information
 Earth MOID = .0183103 au 
 Jupiter MOID = 3.51168 au 
 T_jup = 4.575 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458469.5 (2018-Dec-17.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3108684309612139 0.00036102  
q .9736163287993521 5.7253e-06 au
tp 2458443.028280446062
(2018-Nov-20.52828045)
0.011544 TDB
node 263.0933610777212 2.5619e-06 deg
peri 151.3561547575088 0.0097238 deg
i 25.89153481364266 0.01529 deg
  Orbit Determination Parameters
   # obs. used (total)      83  
   data-arc span      14 days  
   first obs. used      2018-12-14  
   last obs. used      2018-12-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .44849  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:56:08  

Additional Information
 Jupiter MOID = 3.51168 au 
 T_jup = 4.575 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.303338338448989E-7 2.056856426095139E-9 4.166952018970334E-6 -4.837005381112684E-10 3.50929362885308E-6 5.519850272754416E-6
q 2.056856426095139E-9 3.277864427270465E-11 6.587667194747295E-8 -7.335503391031987E-12 5.552349628579001E-8 8.712322060389011E-8
tp 4.166952018970334E-6 6.587667194747295E-8 .000133265924798146 -1.535099444577128E-8 .0001122490569556427 .0001764810737366207
node -4.837005381112684E-10 -7.335503391031987E-12 -1.535099444577128E-8 6.563352979315812E-12 -1.289024537662877E-8 -2.045623433446809E-8
peri 3.50929362885308E-6 5.552349628579001E-8 .0001122490569556427 -1.289024537662877E-8 9.455277140324208E-5 .0001486290729349783
i 5.519850272754416E-6 8.712322060389011E-8 .0001764810737366207 -2.045623433446809E-8 .0001486290729349783 .0002337768396278162

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 24.2   .51604 E2018Y90 autocmod 2.6q

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