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469859 (2005 UD18)
Classification: Main-belt Asteroid          SPK-ID: 2469859
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .163237544655911 8.118e-08  
a 2.39635770016062 2.0509e-08 au
q 2.005182153069114 2.0148e-07 au
i 4.134431929826286 7.136e-06 deg
node 221.5451476776553 7.9534e-05 deg
peri 147.2910012289489 8.1403e-05 deg
M 351.5005016529409 1.9028e-05 deg
tp 2459032.490180260419
(2020-Jul-01.99018026)
7.1854e-05 TDB
period 1354.95818970723
3.71
1.7394e-05
4.762e-08
d
yr
n .2656908550645288 3.4108e-09 deg/d
Q 2.787533247252125 2.3857e-08 au
  Orbit Determination Parameters
   # obs. used (total)      135  
   data-arc span      5029 days (13.77 yr)  
   first obs. used      2005-09-26  
   last obs. used      2019-07-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63974  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 08:02:45  

Additional Information
 Earth MOID = 1.00613 au 
 Jupiter MOID = 2.68564 au 
 T_jup = 3.507 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457671.5 (2016-Oct-10.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1648563813069755 8.1332e-08  
q 2.001366649851537 2.0213e-07 au
tp 2457677.492755087112
(2016-Oct-15.99275509)
6.2588e-05 TDB
node 221.578286264566 7.9451e-05 deg
peri 147.3311904019454 8.1277e-05 deg
i 4.13657632534061 7.1426e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      135  
   data-arc span      5029 days (13.77 yr)  
   first obs. used      2005-09-26  
   last obs. used      2019-07-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63974  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 08:02:45  

Additional Information
 Jupiter MOID = 2.68564 au 
 T_jup = 3.507 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.61484605124155E-15 -1.638858618039447E-14 -2.505397253040157E-13 -6.690546171729034E-14 1.74666632249038E-13 -3.775418022126859E-15
q -1.638858618039447E-14 4.085559303207257E-14 1.003103063516678E-12 1.628100296275951E-13 -3.346088711258464E-13 1.000630944521427E-14
tp -2.505397253040157E-13 1.003103063516678E-12 3.917198997775376E-9 -1.487434708079223E-11 1.083072273644014E-9 4.542012038535824E-13
node -6.690546171729034E-14 1.628100296275951E-13 -1.487434708079223E-11 6.312486047939177E-9 -6.301030893193147E-9 -1.356527124159248E-10
peri 1.74666632249038E-13 -3.346088711258464E-13 1.083072273644014E-9 -6.301030893193147E-9 6.606017929751418E-9 1.354016849763777E-10
i -3.775418022126859E-15 1.000630944521427E-14 4.542012038535824E-13 -1.356527124159248E-10 1.354016849763777E-10 5.101710968706316E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.6   n/a MPO437770  

469859 (2005 UD18)          Discovered 2005-Sep-26 by Spacewatch at Kitt Peak
Reference: Last Updated: 2016-08-22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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