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56164 (1999 DW7)
Classification: Main-belt Asteroid          SPK-ID: 2056164
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06774826434675744 4.9344e-08  
a 2.649039170557846 1.6323e-08 au
q 2.469571364565978 1.3666e-07 au
i 14.25669392343405 5.1403e-06 deg
node 359.0211779528283 1.7822e-05 deg
peri 249.4539499436138 7.1987e-05 deg
M 261.5045799100408 7.7607e-05 deg
tp 2459431.368290017169
(2021-Aug-04.86829002)
0.00034154 TDB
period 1574.820273516385
4.31
1.4555e-05
3.985e-08
d
yr
n .2285975143031167 2.1128e-09 deg/d
Q 2.828506976549714 1.7429e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1054  
   data-arc span      10067 days (27.56 yr)  
   first obs. used      1992-10-02  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51385  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 11:04:52  

Additional Information
 Earth MOID = 1.49847 au 
 Jupiter MOID = 2.23206 au 
 T_jup = 3.344 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.4   n/a MPO378999  

56164 (1999 DW7)          Discovered 1999-Feb-18 by LONEOS at Anderson Mesa
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 DW7 = 2001 QN105 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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