Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 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 
[ 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 = 2.19292 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 16.4   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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jul-14 04:55 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin