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216868 (2008 DT9)
Classification: Main-belt Asteroid          SPK-ID: 2216868
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02362389346761456 5.4252e-08  
a 2.775389517853661 2.2582e-08 au
q 2.709824011552752 1.5887e-07 au
i 6.219177690220144 5.7112e-06 deg
node 131.8773592482113 5.1031e-05 deg
peri 342.6279099410311 0.00013418 deg
M 301.0983560835956 0.00012552 deg
tp 2459476.818051389573
(2021-Sep-19.31805139)
0.00058932 TDB
period 1688.82380670775
4.62
2.0612e-05
5.643e-08
d
yr
n .2131661091998674 2.6017e-09 deg/d
Q 2.84095502415457 2.3116e-08 au
  Orbit Determination Parameters
   # obs. used (total)      252  
   data-arc span      9833 days (26.92 yr)  
   first obs. used      1994-01-10  
   last obs. used      2020-12-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59217  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:56:36  

Additional Information
 Earth MOID = 1.72638 au 
 Jupiter MOID = 2.16658 au 
 T_jup = 3.326 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.32   n/a MPCxxxxx  

216868 (2008 DT9)          Discovered 2008-Feb-26 by Spacewatch at Kitt Peak
Reference: 20090707/Numbers.arcLast Updated: 2009-07-09
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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