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(2009 BK2)
Classification: Apollo [NEO]          SPK-ID: 3444372
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2124770815169815 0.00071846  
a 1.012685021605138 5.1883e-05 au
q .7975126637185169 0.00068681 au
i 3.552989675681595 0.012787 deg
node 126.0578339254948 0.0097787 deg
peri 121.6227890329522 0.035248 deg
M 306.2834730753207 0.45361 deg
tp 2459056.041222053143
(2020-Jul-25.54122205)
0.47328 TDB
period 372.2288294470001
1.02
0.028606
7.832e-05
d
yr
n .9671470115166314 7.4325e-05 deg/d
Q 1.227857379491759 6.2907e-05 au
  Orbit Determination Parameters
   # obs. used (total)      27  
   data-arc span      13 days  
   first obs. used      2009-01-18  
   last obs. used      2009-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .50511  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 09:01:37  

Additional Information
 Earth MOID = .0258208 au 
 Jupiter MOID = 3.78457 au 
 T_jup = 5.999 
[ hide covariance matrix ]
Orbital Elements at Epoch 2454853.5 (2009-Jan-22.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2124579233966818 0.00071102  
q .7969930788302457 0.00064906 au
tp 2454962.796643758801
(2009-May-11.29664376)
0.03106 TDB
node 126.6515670690442 0.0075574 deg
peri 121.4002409339319 0.032517 deg
i 3.569287594202483 0.012868 deg
  Orbit Determination Parameters
   # obs. used (total)      27  
   data-arc span      13 days  
   first obs. used      2009-01-18  
   last obs. used      2009-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .50511  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 09:01:37  

Additional Information
 Jupiter MOID = 3.78457 au 
 T_jup = 5.999 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.055478530526895E-7 -4.614639320725933E-7 -2.197813235287218E-5 -5.372194583711806E-6 2.297408348776414E-5 9.1488865277022E-6
q -4.614639320725933E-7 4.212787493693321E-7 2.003949138565871E-5 4.904423767018766E-6 -2.099752514506034E-5 -8.351872868959007E-6
tp -2.197813235287218E-5 2.003949138565871E-5 .0009647027079329964 .0002332545144828968 -.0009877027788840608 -.0003974005985157236
node -5.372194583711806E-6 4.904423767018766E-6 .0002332545144828968 5.71143637841038E-5 -.0002445017616246271 -9.723954011721003E-5
peri 2.297408348776414E-5 -2.099752514506034E-5 -.0009877027788840608 -.0002445017616246271 .001057364477211624 .000416167815784411
i 9.1488865277022E-6 -8.351872868959007E-6 -.0003974005985157236 -9.723954011721003E-5 .000416167815784411 .0001655856936136345

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 25.3   n/a MPO152543  

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