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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1866308803137315 3.2052e-08  
a 2.427561371691032 8.2753e-09 au
q 1.974503455876725 8.0182e-08 au
i 10.43228889181173 4.2076e-06 deg
node 48.66886284330371 2.0962e-05 deg
peri 17.28042880562641 2.475e-05 deg
M 24.90062298461285 1.235e-05 deg
tp 2458904.943228934699
(2020-Feb-25.44322893)		 4.7362e-05 TDB
period 1381.509113437278
3.78		 7.0641e-06
1.934e-08		 d
yr
n .2605846002016579 1.3325e-09 deg/d
Q 2.880619287505339 9.8197e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1635  
   data-arc span      12596 days (34.49 yr)  
   first obs. used      1985-10-20  
   last obs. used      2020-04-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48267  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:47:58  

Additional Information
 Earth MOID = .99008 au 
 Jupiter MOID = 2.46448 au 
 T_jup = 3.463 
[ 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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