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172765 (2004 DW51)
Classification: Main-belt Asteroid          SPK-ID: 2172765
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08850576080210337 5.3212e-08  
a 2.972585458324803 2.6949e-08 au
q 2.709494520786497 1.5469e-07 au
i 3.265719056894437 5.9363e-06 deg
node 85.05497182697918 9.7214e-05 deg
peri 115.9797274652007 0.00010261 deg
M 37.42761500438078 3.5595e-05 deg
tp 2458805.879043346503
(2019-Nov-18.37904335)
0.00018395 TDB
period 1871.974593814168
5.13
2.5456e-05
6.969e-08
d
yr
n .1923103022816652 2.6152e-09 deg/d
Q 3.235676395863109 2.9334e-08 au
  Orbit Determination Parameters
   # obs. used (total)      400  
   data-arc span      7709 days (21.11 yr)  
   first obs. used      1999-03-21  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56791  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 03:21:03  

Additional Information
 Earth MOID = 1.70841 au 
 Jupiter MOID = 1.72458 au 
 T_jup = 3.254 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456970.5 (2014-Nov-09.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0882972029964612 5.3054e-08  
q 2.709400882961788 1.5431e-07 au
tp 2456928.337065226170
(2014-Sep-27.83706523)
0.00017516 TDB
node 85.06776101508726 9.7211e-05 deg
peri 114.9423005079259 0.00010268 deg
i 3.266025686437167 5.9367e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      400  
   data-arc span      7709 days (21.11 yr)  
   first obs. used      1999-03-21  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56791  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 03:21:03  

Additional Information
 Jupiter MOID = 1.72458 au 
 T_jup = 3.254 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.814745740194314E-15 -8.083122238546716E-15 1.609079007529035E-12 1.132887483189277E-14 3.18754861342148E-13 1.277167493811141E-16
q -8.083122238546716E-15 2.381040365870172E-14 -3.37997816274766E-12 -3.81767853704183E-14 -6.819378151896736E-13 -1.11986894415612E-16
tp 1.609079007529035E-12 -3.37997816274766E-12 3.067941767474656E-8 8.300794190020159E-12 5.828097319802096E-9 2.539836333619299E-12
node 1.132887483189277E-14 -3.81767853704183E-14 8.300794190020159E-12 9.450008792300388E-9 -9.432985639856389E-9 -8.554635139296373E-11
peri 3.18754861342148E-13 -6.819378151896736E-13 5.828097319802096E-9 -9.432985639856389E-9 1.054288247683539E-8 8.588523357970607E-11
i 1.277167493811141E-16 -1.11986894415612E-16 2.539836333619299E-12 -8.554635139296373E-11 8.588523357970607E-11 3.524474100270113E-11

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 15.7   n/a MPO433109  

172765 (2004 DW51)          Discovered 2004-Feb-23 by LINEAR at Socorro
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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