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305830 (2009 DW128)
Classification: Main-belt Asteroid          SPK-ID: 2305830
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1203773909364041 8.7613e-08  
a 2.987016051158941 5.0131e-08 au
q 2.627446852235267 2.734e-07 au
i 8.513602470375067 1.1548e-05 deg
node 5.955237197532986 3.9028e-05 deg
peri 301.5179868374338 7.1724e-05 deg
M 310.7341330223945 6.3864e-05 deg
tp 2459258.546748125819
(2021-Feb-13.04674813)
0.00033405 TDB
period 1885.62254202331
5.16
4.747e-05
1.3e-07
d
yr
n .1909183794619431 4.8063e-09 deg/d
Q 3.346585250082615 5.6166e-08 au
  Orbit Determination Parameters
   # obs. used (total)      166  
   data-arc span      5789 days (15.85 yr)  
   first obs. used      2004-03-23  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58437  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 17:57:47  

Additional Information
 Earth MOID = 1.62578 au 
 Jupiter MOID = 1.98227 au 
 T_jup = 3.230 
[ 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 MPO433970  

305830 (2009 DW128)          Discovered 2009-Feb-24 by Spacewatch at Kitt Peak
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

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