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305785 (2009 DK56)
Classification: Main-belt Asteroid          SPK-ID: 2305785
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1120928485139141 7.4112e-08  
a 2.45514505004689 2.2916e-08 au
q 2.179940847872297 1.8712e-07 au
i 5.842607376934947 6.0431e-06 deg
node 140.1837910282372 7.914e-05 deg
peri 267.0555081766552 8.7712e-05 deg
M 80.0817491234604 3.5249e-05 deg
tp 2458687.931499393861
(2019-Jul-23.43149939)
0.00013644 TDB
period 1405.122408661843
3.85
1.9673e-05
5.386e-08
d
yr
n .2562054364664521 3.5871e-09 deg/d
Q 2.730349252221482 2.5485e-08 au
  Orbit Determination Parameters
   # obs. used (total)      141  
   data-arc span      5960 days (16.32 yr)  
   first obs. used      2003-08-25  
   last obs. used      2019-12-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66803  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:10:44  

Additional Information
 Earth MOID = 1.19886 au 
 Jupiter MOID = 2.6108 au 
 T_jup = 3.477 
[ 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 17.3   n/a MPO455253  

305785 (2009 DK56)          Discovered 2009-Feb-22 by Spacewatch at Kitt Peak
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1983-Oct-08 20:49 00:02 Iris 0.0492707645454692 0.0492665418022283 0.0492749892147679 3.85124739478536 3.85124736448957 2445616.367482085 1.68747635100569 614.836146815337 114.073562057001 -72.9693028470531 61843.9189700498 T 8 CATAB v2.0f-lin.ifort 2020-Nov-11 19:10:45 2020-Nov-11 19:10

Alternate Designations
 2009 DK56 = 2005 CU66 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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