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JPL Small-Body Database Browser
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266838 (2009 UW21)
Classification: Main-belt Asteroid          SPK-ID: 2266838
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1015979204302487 5.614e-08  
a 2.577609040446712 3.0019e-08 au
q 2.315729322255117 1.3673e-07 au
i 5.623075161980972 5.7727e-06 deg
node 132.6693305209583 6.104e-05 deg
peri 184.3605479583272 6.8027e-05 deg
M 166.9472165485344 2.9379e-05 deg
tp 2457899.527987875698
(2017-May-26.02798788)
0.00012434 TDB
period 1511.555146481799
4.14
2.6406e-05
7.23e-08
d
yr
n .2381653099709352 4.1606e-09 deg/d
Q 2.839488758638306 3.3069e-08 au
  Orbit Determination Parameters
   # obs. used (total)      191  
   data-arc span      4341 days (11.89 yr)  
   first obs. used      2007-02-14  
   last obs. used      2019-01-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6196  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 10:16:24  

Additional Information
 Earth MOID = 1.30138 au 
 Jupiter MOID = 2.40534 au 
 T_jup = 3.412 
[ 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 16.8   n/a MPO433732  

266838 (2009 UW21)          Discovered 2009-Oct-16 by CSS at Catalina
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

[ show close-approach data ]
Alternate Designations
 2009 UW21 = 2008 LZ11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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