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249200 (2008 DN9)
Classification: Main-belt Asteroid          SPK-ID: 2249200
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1576431600796966 4.9057e-08  
a 2.780099724706218 2.9306e-08 au
q 2.341836018766835 1.3523e-07 au
i 10.04412648982929 5.5308e-06 deg
node 156.1523677704359 3.525e-05 deg
peri 185.4586160294913 4.2385e-05 deg
M 30.79928440555701 2.53e-05 deg
tp 2458855.647126671514
(2020-Jan-07.14712667)
0.00011765 TDB
period 1693.124869772822
4.64
2.6771e-05
7.33e-08
d
yr
n .212624601071688 3.362e-09 deg/d
Q 3.218363430645601 3.3926e-08 au
  Orbit Determination Parameters
   # obs. used (total)      283  
   data-arc span      9271 days (25.38 yr)  
   first obs. used      1994-02-15  
   last obs. used      2019-07-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64622  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:18:33  

Additional Information
 Earth MOID = 1.33362 au 
 Jupiter MOID = 2.18605 au 
 T_jup = 3.293 
[ show covariance matrix ]

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 16.0   n/a MPO440259  

249200 (2008 DN9)          Discovered 2008-Feb-25 by Spacewatch at Kitt Peak
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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