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18328 (1985 UU)
Classification: Main-belt Asteroid          SPK-ID: 2018328
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1864269019600468 3.2131e-08  
a 2.427060499827943 8.3655e-09 au
q 1.974591129975418 8.0308e-08 au
i 10.43303976486037 4.2372e-06 deg
node 48.66924932544251 2.214e-05 deg
peri 17.30804951083829 2.5724e-05 deg
M 280.6184773837462 1.2642e-05 deg
tp 2458905.034327719305
(2020-Feb-25.53432772)		 4.8608e-05 TDB
period 1381.081571198053
3.78		 7.1404e-06
1.955e-08		 d
yr
n .2606652695305384 1.3477e-09 deg/d
Q 2.87952986968047 9.9251e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1469  
   data-arc span      12462 days (34.12 yr)  
   first obs. used      1985-10-20  
   last obs. used      2019-12-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49586  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:27:18  

Additional Information
 Earth MOID = .989865 au 
 Jupiter MOID = 2.46504 au 
 T_jup = 3.464 
[ 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 14.1   n/a MPO452430  
diameter diameter 4.892 km 0.174 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.203   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18328 (1985 UU)          Discovered 1985-Oct-20 by Mrkos, A. at Klet
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1985 UU = 2000 QJ66 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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