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JPL Small-Body Database Browser
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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 ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06774826127261885 4.9756e-08  
a 2.649039169883102 1.639e-08 au
q 2.469571372080461 1.3755e-07 au
i 14.25669400351781 5.2575e-06 deg
node 359.0211778667738 1.7929e-05 deg
peri 249.4539544463835 7.2449e-05 deg
M 261.5045756072563 7.8009e-05 deg
tp 2459431.368308675082
(2021-Aug-04.86830868)
0.00034325 TDB
period 1574.820272914695
4.31
1.4616e-05
4.002e-08
d
yr
n .2285975143904567 2.1216e-09 deg/d
Q 2.828506967685744 1.7501e-08 au
  Orbit Determination Parameters
   # obs. used (total)      987  
   data-arc span      9986 days (27.34 yr)  
   first obs. used      1992-10-02  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52416  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 11:43:14  

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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