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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2762173748871022 3.3302e-08  
a 2.528710776918428 1.9418e-08 au
q 1.830236924269295 8.8955e-08 au
i 2.355875856879575 5.1877e-06 deg
node 181.5194480441739 0.00013357 deg
peri 219.9007003965731 0.00013483 deg
M 269.1276325133267 2.0388e-05 deg
tp 2458971.246029021593
(2020-May-01.74602902)
8.4023e-05 TDB
period 1468.74758674409
4.02
1.6918e-05
4.632e-08
d
yr
n .2451067857058037 2.8233e-09 deg/d
Q 3.227184629567561 2.4782e-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 = .838784 au 
 Jupiter MOID = 2.19014 au 
 T_jup = 3.397 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457130.5 (2015-Apr-18.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2774334714210254 3.3721e-08  
q 1.826267435916485 9.0124e-08 au
tp 2457498.925502211924
(2016-Apr-20.42550221)
8.0676e-05 TDB
node 181.6422457879374 0.00013299 deg
peri 219.1810942289606 0.00013425 deg
i 2.357957930688823 5.2089e-06 deg
  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
 Jupiter MOID = 2.19014 au 
 T_jup = 3.397 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.137104734543392E-15 -3.006031783666503E-15 -8.055638770482683E-13 2.781068078914834E-15 -1.581772068854909E-13 -2.036805716965724E-16
q -3.006031783666503E-15 8.122363597029027E-15 2.128784410480589E-12 -7.226118444077508E-15 4.055474232888249E-13 7.11329886456205E-16
tp -8.055638770482683E-13 2.128784410480589E-12 6.508646795254092E-9 -6.185589930565911E-11 1.515986899113366E-9 5.017253791391697E-12
node 2.781068078914834E-15 -7.226118444077508E-15 -6.185589930565911E-11 1.768737052936772E-8 -1.768604092980089E-8 -3.627443282284509E-10
peri -1.581772068854909E-13 4.055474232888249E-13 1.515986899113366E-9 -1.768604092980089E-8 1.802183231211669E-8 3.635641731119863E-10
i -2.036805716965724E-16 7.11329886456205E-16 5.017253791391697E-12 -3.627443282284509E-10 3.635641731119863E-10 2.713268216842231E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.5   n/a MPO450009  

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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