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216872 (2008 DB81)
Classification: Main-belt Asteroid          SPK-ID: 2216872
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1145643232424181 5.6328e-08  
a 3.077656785492279 4.3781e-08 au
q 2.72506711868992 1.703e-07 au
i 13.01745707171642 9.6319e-06 deg
node 169.0407274514689 2.9343e-05 deg
peri 287.3339059377979 5.2701e-05 deg
M 200.5492490129388 4.6613e-05 deg
tp 2460073.979616755253
(2023-May-09.47961676)
0.00026333 TDB
period 1972.098971533898
5.40
4.2081e-05
1.152e-07
d
yr
n .1825466192094772 3.8952e-09 deg/d
Q 3.430246452294638 4.8797e-08 au
  Orbit Determination Parameters
   # obs. used (total)      180  
   data-arc span      8086 days (22.14 yr)  
   first obs. used      1997-03-11  
   last obs. used      2019-05-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55864  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:56:36  

Additional Information
 Earth MOID = 1.77625 au 
 Jupiter MOID = 1.79317 au 
 T_jup = 3.179 
[ 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 15.5   n/a MPO470329  

216872 (2008 DB81)          Discovered 2008-Feb-26 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20090707/Numbers.arcLast Updated: 2009-07-09

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