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193346 (2000 UD18)
Classification: Main-belt Asteroid          SPK-ID: 2193346
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2404671782194986 3.5152e-08  
a 2.653359298040437 1.8178e-08 au
q 2.015313474838184 9.2978e-08 au
i 5.067450163178934 8.0126e-06 deg
node 143.4205128412501 9.4419e-05 deg
peri 320.3755776536093 9.718e-05 deg
M 148.7405984753923 2.3551e-05 deg
tp 2458348.241803953675
(2018-Aug-17.74180395)
9.9816e-05 TDB
period 1578.674235437642
4.32
1.6223e-05
4.442e-08
d
yr
n .2280394472265524 2.3435e-09 deg/d
Q 3.29140512124269 2.255e-08 au
  Orbit Determination Parameters
   # obs. used (total)      387  
   data-arc span      6791 days (18.59 yr)  
   first obs. used      2000-10-24  
   last obs. used      2019-05-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62294  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 06:31:22  

Additional Information
 Earth MOID = 1.03514 au 
 Jupiter MOID = 1.87659 au 
 T_jup = 3.342 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457349.5 (2015-Nov-23.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2420022821590916 3.5186e-08  
q 2.008831936153506 9.3408e-08 au
tp 2456772.053818286396
(2014-Apr-24.55381829)
9.266e-05 TDB
node 143.4737649480195 9.4511e-05 deg
peri 320.1812864302621 9.7201e-05 deg
i 5.067253099751489 8.0157e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      387  
   data-arc span      6791 days (18.59 yr)  
   first obs. used      2000-10-24  
   last obs. used      2019-05-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62294  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 06:31:22  

Additional Information
 Jupiter MOID = 1.87659 au 
 T_jup = 3.342 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.238022391871944E-15 -3.251118594298656E-15 5.53760582557576E-13 -6.202142670442457E-15 1.556479262976715E-13 -9.766249408662696E-16
q -3.251118594298656E-15 8.725125255548311E-15 -1.077716060726304E-12 2.685586364586065E-14 -3.05439620039174E-13 3.712434756623473E-15
tp 5.53760582557576E-13 -1.077716060726304E-12 8.585791595194436E-9 1.337677747809123E-11 2.218352418692425E-9 2.138431373904757E-12
node -6.202142670442457E-15 2.685586364586065E-14 1.337677747809123E-11 8.932348682955646E-9 -8.891388835240012E-9 5.624877951068217E-10
peri 1.556479262976715E-13 -3.05439620039174E-13 2.218352418692425E-9 -8.891388835240012E-9 9.448045522157511E-9 -5.595635460645716E-10
i -9.766249408662696E-16 3.712434756623473E-15 2.138431373904757E-12 5.624877951068217E-10 -5.595635460645716E-10 6.425113401086448E-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 16.2   n/a MPO436955  
diameter diameter 1.513 km 0.330 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.307   0.171 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

193346 (2000 UD18)          Discovered 2000-Oct-24 by LINEAR at Socorro
Reference: 20081113/Numbers.arcLast Updated: 2008-11-17

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