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JPL Small-Body Database Browser
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(2018 BU1)
Classification: Apollo [NEO]          SPK-ID: 3797752
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4621254778495456 1.9086e-07  
a 1.593495967552987 1.8733e-08 au
q .8571008820962386 3.0103e-07 au
i 6.378566585106759 2.7294e-05 deg
node 302.9929963626071 1.0237e-05 deg
peri 238.0384704794497 6.0097e-05 deg
M 39.757064157757 2.2527e-05 deg
tp 2458919.359685642577
(2020-Mar-10.85968564)
4.4803e-05 TDB
period 734.7251057765337
2.01
1.2956e-05
3.547e-08
d
yr
n .4899791733937207 8.6402e-09 deg/d
Q 2.329891053009734 2.739e-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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42007  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-25 05:41:59  

Additional Information
 Earth MOID = .00748989 au 
 Jupiter MOID = 2.65932 au 
 T_jup = 4.241 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458339.5 (2018-Aug-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4620367543559669 1.9201e-07  
q .8565842868692214 3.0123e-07 au
tp 2458185.531139881297
(2018-Mar-08.03113988)
3.114e-05 TDB
node 303.0207781914268 1.0263e-05 deg
peri 238.0794406221159 5.9875e-05 deg
i 6.383364286117769 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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42007  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-25 05:41:59  

Additional Information
 Jupiter MOID = 2.65932 au 
 T_jup = 4.241 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.686805246288895E-14 -5.778577830212049E-14 5.335897030585781E-12 8.917283548101671E-14 1.07296788398088E-11 5.420898207745833E-13
q -5.778577830212049E-14 9.073920883618911E-14 -8.230918871413894E-12 -2.198305120147886E-13 -1.66255034055964E-11 -6.216552761032497E-13
tp 5.335897030585781E-12 -8.230918871413894E-12 9.696770557068574E-10 -9.853859739188178E-11 1.841333771278623E-9 4.03493948562065E-10
node 8.917283548101671E-14 -2.198305120147886E-13 -9.853859739188178E-11 1.053350140790791E-10 -1.779356958796517E-10 -2.060311600498613E-10
peri 1.07296788398088E-11 -1.66255034055964E-11 1.841333771278623E-9 -1.779356958796517E-10 3.585070997503182E-9 6.546405263454482E-10
i 5.420898207745833E-13 -6.216552761032497E-13 4.03493948562065E-10 -2.060311600498613E-10 6.546405263454482E-10 7.446625144878486E-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 24.7   n/a MPO438050  

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