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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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1866308806766909 3.208e-08  
a 2.42756137176348 8.2866e-09 au
q 1.974503455054546 8.0261e-08 au
i 10.43228882697542 4.2166e-06 deg
node 48.66886348100827 2.1062e-05 deg
peri 17.28042816051136 2.4844e-05 deg
M 24.90062294551869 1.2403e-05 deg
tp 2458904.943229080446
(2020-Feb-25.44322908)
4.7563e-05 TDB
period 1381.509113499123
3.78
7.0738e-06
1.937e-08
d
yr
n .2605846001899926 1.3343e-09 deg/d
Q 2.880619288472415 9.8331e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1593  
   data-arc span      12526 days (34.29 yr)  
   first obs. used      1985-10-20  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48339  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:23:40  

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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