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305815 (2009 DT109)
Classification: Main-belt Asteroid          SPK-ID: 2305815
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1780239089853471 6.8473e-08  
a 2.432655353524271 2.1736e-08 au
q 1.999584538275749 1.5993e-07 au
i 2.958853973296486 6.6621e-06 deg
node 253.0920107733724 9.4627e-05 deg
peri 322.0606453781908 9.5689e-05 deg
M 307.5274479812201 1.3855e-05 deg
tp 2459202.498893167570
(2020-Dec-18.99889317)
5.4301e-05 TDB
period 1385.859820850694
3.79
1.8574e-05
5.085e-08
d
yr
n .2597665323604072 3.4815e-09 deg/d
Q 2.865726168772793 2.5605e-08 au
  Orbit Determination Parameters
   # obs. used (total)      211  
   data-arc span      9911 days (27.13 yr)  
   first obs. used      1992-11-25  
   last obs. used      2020-01-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58746  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 17:57:47  

Additional Information
 Earth MOID = .993752 au 
 Jupiter MOID = 2.11238 au 
 T_jup = 3.483 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457065.5 (2015-Feb-12.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1784625902143419 6.8368e-08  
q 1.998191691121561 1.5975e-07 au
tp 2456431.367556682653
(2013-May-18.86755668)
5.282e-05 TDB
node 253.1449898180265 9.47e-05 deg
peri 322.071189533938 9.5757e-05 deg
i 2.957844697283281 6.6605e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      211  
   data-arc span      9911 days (27.13 yr)  
   first obs. used      1992-11-25  
   last obs. used      2020-01-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58746  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 17:57:47  

Additional Information
 Jupiter MOID = 2.11238 au 
 T_jup = 3.483 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.674251485737803E-15 -1.086601116481456E-14 3.380363045292745E-13 -2.758688798985366E-14 1.102574871808136E-13 -7.403115575049121E-16
q -1.086601116481456E-14 2.552130057659926E-14 -1.11941434304734E-12 6.205290121682005E-14 -3.108228090541418E-13 2.079968234166333E-15
tp 3.380363045292745E-13 -1.11941434304734E-12 2.789984458661452E-9 -2.420369617915138E-12 7.591670328097938E-10 -1.063944227690061E-12
node -2.758688798985366E-14 6.205290121682005E-14 -2.420369617915138E-12 8.968173200030624E-9 -8.955968735708806E-9 -1.659750643595056E-10
peri 1.102574871808136E-13 -3.108228090541418E-13 7.591670328097938E-10 -8.955968735708806E-9 9.169357629210268E-9 1.655031811986976E-10
i -7.403115575049121E-16 2.079968234166333E-15 -1.063944227690061E-12 -1.659750643595056E-10 1.655031811986976E-10 4.436257734581589E-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 MPO418595  

305815 (2009 DT109)          Discovered 2009-Feb-19 by CSS at Catalina
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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