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305644 (2009 BA44)
Classification: Main-belt Asteroid          SPK-ID: 2305644
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 .0919892980818356 5.398e-08  
a 2.521095868812543 2.4004e-08 au
q 2.289182029443462 1.3184e-07 au
i 3.77425297296662 5.574e-06 deg
node 159.028110925338 9.6035e-05 deg
peri 132.6484134874821 0.00010569 deg
M 157.7385970776259 5.0624e-05 deg
tp 2458359.854262209877
(2018-Aug-29.35426221)
0.00020246 TDB
period 1462.118149123299
4.00
2.0882e-05
5.717e-08
d
yr
n .2462181323827077 3.5165e-09 deg/d
Q 2.753009708181624 2.6212e-08 au
  Orbit Determination Parameters
   # obs. used (total)      218  
   data-arc span      8796 days (24.08 yr)  
   first obs. used      1995-10-28  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59414  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 21:13:45  

Additional Information
 Earth MOID = 1.27512 au 
 Jupiter MOID = 2.38191 au 
 T_jup = 3.447 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457338.5 (2015-Nov-12.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09311815606977851 5.3886e-08  
q 2.285593767275687 1.3169e-07 au
tp 2456898.983047895671
(2014-Aug-29.48304790)
0.0001949 TDB
node 159.0717845916019 9.5962e-05 deg
peri 132.7741913244843 0.00010546 deg
i 3.775732431072669 5.5781e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      218  
   data-arc span      8796 days (24.08 yr)  
   first obs. used      1995-10-28  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59414  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 21:13:45  

Additional Information
 Jupiter MOID = 2.38191 au 
 T_jup = 3.447 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.903716626789201E-15 -7.00646915316102E-15 1.210229651776178E-12 -2.019948054591608E-14 2.323664256454684E-13 6.397177165670138E-16
q -7.00646915316102E-15 1.734339215652845E-14 -2.101479541742565E-12 5.366591278469257E-14 -3.534131283183243E-13 -1.560424855662845E-15
tp 1.210229651776178E-12 -2.101479541742565E-12 3.798483815352354E-8 1.403735170279433E-10 8.573421417981352E-9 -1.752360327252632E-11
node -2.019948054591608E-14 5.366591278469257E-14 1.403735170279433E-10 9.208632997929806E-9 -9.15540490553604E-9 1.004670578331684E-10
peri 2.323664256454684E-13 -3.534131283183243E-13 8.573421417981352E-9 -9.15540490553604E-9 1.112133916018649E-8 -1.042396309524631E-10
i 6.397177165670138E-16 -1.560424855662845E-15 -1.752360327252632E-11 1.004670578331684E-10 -1.042396309524631E-10 3.111485435240622E-11

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 16.8   n/a MPO503303  

305644 (2009 BA44)          Discovered 2009-Jan-16 by Spacewatch at Kitt Peak
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

[ show close-approach data ]
Alternate Designations
 2009 BA44 = 2007 VN138 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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