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266850 (2009 UL61)
Classification: Main-belt Asteroid          SPK-ID: 2266850
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02240081966687756 7.4752e-08  
a 2.712530171358115 2.9691e-08 au
q 2.651767272148558 2.1339e-07 au
i 5.15477449441696 7.1328e-06 deg
node 145.4485275084437 5.8226e-05 deg
peri 4.452229005545726 0.00016904 deg
M 7.181115974352961 0.00015322 deg
tp 2458967.950094429683
(2020-Apr-28.45009443)
0.00069467 TDB
period 1631.7750677143
4.47
2.6792e-05
7.335e-08
d
yr
n .2206186423134091 3.6223e-09 deg/d
Q 2.773293070567673 3.0356e-08 au
  Orbit Determination Parameters
   # obs. used (total)      207  
   data-arc span      5201 days (14.24 yr)  
   first obs. used      2005-11-06  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56152  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 12:50:10  

Additional Information
 Earth MOID = 1.66213 au 
 Jupiter MOID = 2.19809 au 
 T_jup = 3.356 
[ 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 16.8   n/a MPO454983  

266850 (2009 UL61)          Discovered 2005-Nov-06 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

Alternate Designations
 2009 UL61 = 2007 EC63 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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