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66840 (1999 UU52)
Classification: Main-belt Asteroid          SPK-ID: 2066840
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2281216068799319 5.1058e-08  
a 2.808903556740034 2.4284e-08 au
q 2.168131963805741 1.3585e-07 au
i 9.320962068107951 5.008e-06 deg
node 132.856354349731 3.0254e-05 deg
peri 201.9838318170038 3.3547e-05 deg
M 224.720618911842 2.0825e-05 deg
tp 2459846.649147702973
(2022-Sep-24.14914770)
0.00010536 TDB
period 1719.50589440886
4.71
2.2299e-05
6.105e-08
d
yr
n .2093624692829346 2.715e-09 deg/d
Q 3.449675149674326 2.9824e-08 au
  Orbit Determination Parameters
   # obs. used (total)      686  
   data-arc span      8339 days (22.83 yr)  
   first obs. used      1998-05-23  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59939  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 07:02:31  

Additional Information
 Earth MOID = 1.159 au 
 Jupiter MOID = 1.9356 au 
 T_jup = 3.264 
[ show covariance matrix ]

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 15.05   n/a E2021B10  
diameter diameter 5.563 km 0.591 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.069   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66840 (1999 UU52)          Discovered 1999-Oct-31 by CSS at Catalina
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 UU52 = 1998 KQ54 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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