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441781 (2009 DA55)
Classification: Main-belt Asteroid          SPK-ID: 2441781
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1008814733490127 8.4881e-08  
a 2.772192374011464 5.218e-08 au
q 2.49252952291429 2.4619e-07 au
i 4.601015793621258 1.197e-05 deg
node 7.680762557362069 0.00010918 deg
peri 214.5765956864705 0.00013466 deg
M 106.972513255444 7.7012e-05 deg
tp 2458499.539859289855
(2019-Jan-16.03985929)
0.00035364 TDB
period 1685.906455474196
4.62
4.76e-05
1.303e-07
d
yr
n .2135349792576378 6.0289e-09 deg/d
Q 3.051855225108637 5.7444e-08 au
  Orbit Determination Parameters
   # obs. used (total)      55  
   data-arc span      6546 days (17.92 yr)  
   first obs. used      2000-04-05  
   last obs. used      2018-03-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61595  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 14:19:10  

Additional Information
 Earth MOID = 1.48593 au 
 Jupiter MOID = 1.9308 au 
 T_jup = 3.325 
[ 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 17.6   n/a MPO295773  

441781 (2009 DA55)          Discovered 2009-Feb-01 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

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