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190687 (2001 DW40)
Classification: Main-belt Asteroid          SPK-ID: 2190687
[ 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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1836880785923212 3.9202e-08  
a 2.768312140100105 2.066e-08 au
q 2.25980620214132 1.1009e-07 au
i 7.9194860710944 5.024e-06 deg
node 140.0821349296187 3.4693e-05 deg
peri 299.0311496211983 3.8219e-05 deg
M 165.3360498504549 1.9416e-05 deg
tp 2458427.844199275891
(2018-Nov-05.34419928)		 8.5895e-05 TDB
period 1682.368052897533
4.61		 1.8833e-05
5.156e-08		 d
yr
n .213984091875719 2.3954e-09 deg/d
Q 3.27681807805889 2.4455e-08 au
   Orbit Determination Parameters
   # obs. used (total)      530  
   data-arc span      7539 days (20.64 yr)  
   first obs. used      1999-10-05  
   last obs. used      2020-05-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56366  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:08:43  

Additional Information
 Earth MOID = 1.28766 au 
 Jupiter MOID = 2.00534 au 
 T_jup = 3.300 
[ 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 15.58   n/a E2021B55  

190687 (2001 DW40)          Discovered 2001-Feb-19 by LINEAR at Socorro
Reference: 20080917/Numbers.arcLast Updated: 2008-09-19

[ show close-approach data ]
Alternate Designations
 2001 DW40 = 1999 TH231 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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