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(2018 BU1)
Classification: Apollo [NEO]          SPK-ID: 3797752
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .462327417794634 1.9074e-07  
a 1.5933285189165 1.8547e-08 au
q .8566890590672859 3.0111e-07 au
i 6.378759802446204 2.7295e-05 deg
node 302.9923251391845 1.0237e-05 deg
peri 238.0274872790869 6.004e-05 deg
M 137.7541360557932 2.3873e-05 deg
tp 2458919.401474247889
(2020-Mar-10.90147425)
4.4702e-05 TDB
period 734.6092986258789
2.01
1.2827e-05
3.512e-08
d
yr
n .4900564159389173 8.5566e-09 deg/d
Q 2.329967978765715 2.7121e-08 au
  Orbit Determination Parameters
   # obs. used (total)      109  
   data-arc span      745 days (2.04 yr)  
   first obs. used      2018-01-09  
   last obs. used      2020-01-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42007  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:20:14  

Additional Information
 Earth MOID = .00731201 au 
 Jupiter MOID = 2.65825 au 
 T_jup = 4.241 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458339.5 (2018-Aug-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4620367548853085 1.9201e-07  
q .8565842859044599 3.0123e-07 au
tp 2458185.531139982083
(2018-Mar-08.03113998)
3.114e-05 TDB
node 303.0207783263044 1.0263e-05 deg
peri 238.0794406176179 5.9875e-05 deg
i 6.383364254688842 2.7289e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      109  
   data-arc span      745 days (2.04 yr)  
   first obs. used      2018-01-09  
   last obs. used      2020-01-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42007  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:20:14  

Additional Information
 Jupiter MOID = 2.65825 au 
 T_jup = 4.241 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.686806901258102E-14 -5.778581135021753E-14 5.335896956000049E-12 8.917262562003885E-14 1.072967982544431E-11 5.420906950988684E-13
q -5.778581135021753E-14 9.073927180240199E-14 -8.230919739847138E-12 -2.198302796582098E-13 -1.662550690143512E-11 -6.216566507355543E-13
tp 5.335896956000049E-12 -8.230919739847138E-12 9.696767608772122E-10 -9.853875570041247E-11 1.841333378791855E-9 4.034942052144884E-10
node 8.917262562003885E-14 -2.198302796582098E-13 -9.853875570041247E-11 1.053351354941508E-10 -1.779359955583566E-10 -2.060314366517572E-10
peri 1.072967982544431E-11 -1.662550690143512E-11 1.841333378791855E-9 -1.779359955583566E-10 3.585070556628832E-9 6.546411418884521E-10
i 5.420906950988684E-13 -6.216566507355543E-13 4.034942052144884E-10 -2.060314366517572E-10 6.546411418884521E-10 7.446629125565036E-10

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 24.6   n/a MPO545073  

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