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187355 (2005 US229)
Classification: Main-belt Asteroid          SPK-ID: 2187355
[ 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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09095582601878061 7.7794e-08  
a 3.048436472578283 3.1069e-08 au
q 2.771163415149148 2.3467e-07 au
i 5.408342369930462 8.0394e-06 deg
node 206.881425726966 6.0095e-05 deg
peri 345.3626842195382 6.7025e-05 deg
M 161.1149111222155 3.3468e-05 deg
tp 2458330.443640554574
(2018-Jul-30.94364055)		 0.00017335 TDB
period 1944.080080600092
5.32		 2.972e-05
8.137e-08		 d
yr
n .1851775570319492 2.8309e-09 deg/d
Q 3.325709530007419 3.3895e-08 au
   Orbit Determination Parameters
   # obs. used (total)      297  
   data-arc span      8670 days (23.74 yr)  
   first obs. used      1997-03-12  
   last obs. used      2020-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54175  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 11:56:40  

Additional Information
 Earth MOID = 1.77025 au 
 Jupiter MOID = 1.63721 au 
 T_jup = 3.225 
[ 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 15.83   n/a E2021B55  

187355 (2005 US229)          Discovered 2005-Oct-25 by Spacewatch at Kitt Peak
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

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