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212955 (2009 BF47)
Classification: Main-belt Asteroid          SPK-ID: 2212955
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2762800068209315 3.3261e-08  
a 2.527676078195054 1.9156e-08 au
q 1.829329714070219 8.8811e-08 au
i 2.356187252561331 5.1895e-06 deg
node 181.5023957866248 0.00013357 deg
peri 220.0193029793166 0.00013483 deg
M 7.12616581573857 2.063e-05 deg
tp 2458971.444123752810
(2020-May-01.94412375)
8.4047e-05 TDB
period 1467.846205021886
4.02
1.6686e-05
4.568e-08
d
yr
n .2452573020036744 2.788e-09 deg/d
Q 3.226022442319889 2.4448e-08 au
  Orbit Determination Parameters
   # obs. used (total)      336  
   data-arc span      8270 days (22.64 yr)  
   first obs. used      1997-03-04  
   last obs. used      2019-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5242  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 23:47:47  

Additional Information
 Earth MOID = .838474 au 
 Jupiter MOID = 2.19292 au 
 T_jup = 3.397 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.4   n/a MPO494176  

212955 (2009 BF47)          Discovered 2009-Jan-16 by Spacewatch at Kitt Peak
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10

Alternate Designations
 2009 BF47 = 1997 EK21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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