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187321 (2005 UK55)
Classification: Main-belt Asteroid          SPK-ID: 2187321
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1676585052159889 4.0772e-08  
a 3.113668617234748 3.3182e-08 au
q 2.591635591131235 1.3346e-07 au
i 4.271238506076813 4.8133e-06 deg
node 247.8799422332433 6.5465e-05 deg
peri 139.1220040107962 6.7524e-05 deg
M 288.4441506534451 2.0247e-05 deg
tp 2459599.386787545006
(2022-Jan-19.88678754)
0.00011736 TDB
period 2006.813486633792
5.49
3.2079e-05
8.783e-08
d
yr
n .1793888681722287 2.8676e-09 deg/d
Q 3.635701643338261 3.8745e-08 au
  Orbit Determination Parameters
   # obs. used (total)      398  
   data-arc span      7229 days (19.79 yr)  
   first obs. used      1999-09-14  
   last obs. used      2019-06-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55431  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 20:33:47  

Additional Information
 Earth MOID = 1.59705 au 
 Jupiter MOID = 1.83124 au 
 T_jup = 3.192 
[ 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 15.3   n/a MPO436926  
diameter diameter 3.480 km 0.188 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.121   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

187321 (2005 UK55)          Discovered 2005-Oct-23 by CSS at Catalina
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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