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305631 (2009 BN12)
Classification: Main-belt Asteroid          SPK-ID: 2305631
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | 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 .0480938357725993 5.7698e-08  
a 2.593169169315582 3.3706e-08 au
q 2.468453717155951 1.4056e-07 au
i 12.01153320199561 1.039e-05 deg
node 19.02104942725825 3.0755e-05 deg
peri 250.927655011247 0.00020185 deg
M 123.9188542596963 0.00018761 deg
tp 2458475.475476123052
(2018-Dec-22.97547612)
0.00080174 TDB
period 1525.262880494329
4.18
2.9738e-05
8.142e-08
d
yr
n .2360248876464666 4.6017e-09 deg/d
Q 2.717884621475213 3.5327e-08 au
  Orbit Determination Parameters
   # obs. used (total)      165  
   data-arc span      8221 days (22.51 yr)  
   first obs. used      1997-04-30  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45673  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 21:13:45  

Additional Information
 Earth MOID = 1.48324 au 
 Jupiter MOID = 2.32357 au 
 T_jup = 3.386 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457629.5 (2016-Aug-29.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04879774072310794 5.5924e-08  
q 2.466578096506259 1.3719e-07 au
tp 2456955.378653978338
(2014-Oct-24.87865398)
0.00081576 TDB
node 19.05822579948551 3.072e-05 deg
peri 252.1679677876261 0.00020028 deg
i 12.02022071204886 1.0397e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      165  
   data-arc span      8221 days (22.51 yr)  
   first obs. used      1997-04-30  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45673  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 21:13:45  

Additional Information
 Jupiter MOID = 2.32357 au 
 T_jup = 3.386 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.127506970153899E-15 -7.476946608052548E-15 -1.639960731867045E-11 2.22141427006027E-14 -4.083569719633597E-12 1.391136137337678E-15
q -7.476946608052548E-15 1.882097697898578E-14 2.362454098169956E-11 -3.924026141195787E-14 6.047788405488004E-12 5.648975188863301E-15
tp -1.639960731867045E-11 2.362454098169956E-11 6.654652235226278E-7 -6.991166627861636E-10 1.614660576506406E-7 -3.025096344142654E-10
node 2.22141427006027E-14 -3.924026141195787E-14 -6.991166627861636E-10 9.437097470163506E-10 -1.091802371038172E-9 -1.494473602961871E-10
peri -4.083569719633597E-12 6.047788405488004E-12 1.614660576506406E-7 -1.091802371038172E-9 4.011165706167325E-8 7.364878866748163E-11
i 1.391136137337678E-15 5.648975188863301E-15 -3.025096344142654E-10 -1.494473602961871E-10 7.364878866748163E-11 1.080968431522579E-10

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.7   n/a MPO450229  

305631 (2009 BN12)          Discovered 2009-Jan-26 by Apitzsch, R. at Wildberg
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

[ show close-approach data ]
Alternate Designations
 2009 BN12 = 1997 HL16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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