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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1866990050115668 3.1458e-08  
a 2.42750923993944 8.1125e-09 au
q 1.974295680186362 7.8517e-08 au
i 10.43219846551838 4.1403e-06 deg
node 48.66262325624084 2.0944e-05 deg
peri 17.25980598187462 2.4673e-05 deg
M 77.03410466551331 1.2342e-05 deg
tp 2458904.889195814869
(2020-Feb-25.38919581)
4.7226e-05 TDB
period 1381.464611923885
3.78
6.9251e-06
1.896e-08
d
yr
n .2605929944876756 1.3063e-09 deg/d
Q 2.880722799692519 9.6271e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1736  
   data-arc span      12879 days (35.26 yr)  
   first obs. used      1985-10-20  
   last obs. used      2021-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48229  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:37:45  

Additional Information
 Earth MOID = .989226 au 
 Jupiter MOID = 2.46511 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 14.18   n/a E2021B10  
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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