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JPL Small-Body Database Browser
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(2009 BD81)
Classification: Apollo [NEO, PHA]          SPK-ID: 3445537
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 2454870.5 (2009-Feb-08.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6393979349964819 0.0017296  
a 2.592624513148097 0.012089 au
q .9349057532199444 0.00012467 au
i 12.46423358395814 0.021812 deg
node 344.3789597247662 0.0022764 deg
peri 190.5354925343982 0.0021944 deg
M 352.5823358466922 0.052883 deg
tp 2454901.917565312030
(2009-Mar-11.41756531)
0.0042441 TDB
period 1524.782367948972
4.17
10.665
0.0292
d
yr
n .2360992673887266 0.0016514 deg/d
Q 4.250343273076249 0.019819 au
  Orbit Determination Parameters
   # obs. used (total)      46  
   data-arc span      23 days  
   first obs. used      2009-01-31  
   last obs. used      2009-02-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      8  
   norm. resid. RMS      .49442  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 09:01:29  

Additional Information
 Earth MOID = .0455759 au 
 Jupiter MOID = .761418 au 
 T_jup = 3.067 
[ show covariance matrix ]

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 20.7   n/a MPO154238  

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