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305639 (2009 BA39)
Classification: Main-belt Asteroid          SPK-ID: 2305639
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1090775447149301 5.6676e-08  
a 2.376479027186299 1.5687e-08 au
q 2.117258529834292 1.3161e-07 au
i 6.194231414538214 7.5585e-06 deg
node 326.1072940127257 4.2139e-05 deg
peri 116.8000605947815 5.3697e-05 deg
M 77.90060739556235 3.2543e-05 deg
tp 2458710.940546094234
(2019-Aug-15.44054609)
0.00012096 TDB
period 1338.13338420791
3.66
1.3249e-05
3.627e-08
d
yr
n .269031476419742 2.6638e-09 deg/d
Q 2.635699524538306 1.7398e-08 au
  Orbit Determination Parameters
   # obs. used (total)      225  
   data-arc span      8082 days (22.13 yr)  
   first obs. used      1998-03-02  
   last obs. used      2020-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50892  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 20:00:46  

Additional Information
 Earth MOID = 1.1418 au 
 Jupiter MOID = 2.54251 au 
 T_jup = 3.525 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457465.5 (2016-Mar-18.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1079275466897887 5.667e-08  
q 2.120137489819369 1.3149e-07 au
tp 2457373.078828208146
(2015-Dec-16.57882821)
0.00012344 TDB
node 326.1770785583897 4.2093e-05 deg
peri 116.9326308524089 5.3918e-05 deg
i 6.197695622756779 7.5614e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      225  
   data-arc span      8082 days (22.13 yr)  
   first obs. used      1998-03-02  
   last obs. used      2020-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50892  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 20:00:46  

Additional Information
 Jupiter MOID = 2.54251 au 
 T_jup = 3.525 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.211433966926148E-15 -7.412445090853806E-15 2.268358839707771E-12 -1.199426156056583E-14 4.826402555198317E-13 6.928220171538781E-16
q -7.412445090853806E-15 1.729078145436879E-14 -5.606529802259374E-12 2.664955279693636E-14 -1.212049797448736E-12 -1.155422443225581E-15
tp 2.268358839707771E-12 -5.606529802259374E-12 1.523695678196599E-8 -3.076803975422055E-11 4.159228439203864E-9 -9.073100683024472E-12
node -1.199426156056583E-14 2.664955279693636E-14 -3.076803975422055E-11 1.771814858698887E-9 -1.76855086807007E-9 7.016106737547362E-13
peri 4.826402555198317E-13 -1.212049797448736E-12 4.159228439203864E-9 -1.76855086807007E-9 2.907149168394358E-9 -3.198270696722541E-12
i 6.928220171538781E-16 -1.155422443225581E-15 -9.073100683024472E-12 7.016106737547362E-13 -3.198270696722541E-12 5.717499442319961E-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 16.9   n/a MPO455251  

305639 (2009 BA39)          Discovered 2009-Jan-16 by Spacewatch at Kitt Peak
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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