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266849 (2009 UH61)
Classification: Main-belt Asteroid          SPK-ID: 2266849
[ 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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1210051771144918 1.0167e-07  
a 2.7207924661456 2.4015e-08 au
q 2.391562491887876 2.8076e-07 au
i 6.122113886101164 8.8888e-06 deg
node 58.87455527811597 7.4551e-05 deg
peri 344.2226777786126 8.5727e-05 deg
M 112.7254239752133 3.8045e-05 deg
tp 2458487.212216367125
(2019-Jan-03.71221637)		 0.00017251 TDB
period 1639.236257372305
4.49		 2.1703e-05
5.942e-08		 d
yr
n .2196144688606876 2.9077e-09 deg/d
Q 3.050022440403323 2.6921e-08 au
   Orbit Determination Parameters
   # obs. used (total)      144  
   data-arc span      9957 days (27.26 yr)  
   first obs. used      1993-01-23  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5576  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 15:25:53  

Additional Information
 Earth MOID = 1.40125 au 
 Jupiter MOID = 2.33096 au 
 T_jup = 3.340 
[ 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 16.7   n/a MPO460148  

266849 (2009 UH61)          Discovered 2009-Oct-17 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

Alternate Designations
 2009 UH61 = 2005 XA86 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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