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JPL Small-Body Database Browser
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442474 (2011 UD309)
Classification: Main-belt Asteroid          SPK-ID: 2442474
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1502478476593688 1.4384e-07  
a 2.781180747315091 6.7206e-08 au
q 2.363314326079324 4.3949e-07 au
i 2.315956118424606 6.6917e-06 deg
node 208.0719824151192 0.00028034 deg
peri 165.7057886967925 0.00028422 deg
M 324.9855446995848 6.1646e-05 deg
tp 2459165.273407231711
(2020-Nov-11.77340723)
0.00029496 TDB
period 1694.112505663128
4.64
6.1406e-05
1.681e-07
d
yr
n .2125006449079277 7.7025e-09 deg/d
Q 3.199047168550858 7.7304e-08 au
  Orbit Determination Parameters
   # obs. used (total)      82  
   data-arc span      4690 days (12.84 yr)  
   first obs. used      2006-08-28  
   last obs. used      2019-07-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53825  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:43:16  

Additional Information
 Earth MOID = 1.36408 au 
 Jupiter MOID = 2.26766 au 
 T_jup = 3.315 
[ 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 17.4   n/a MPO477089  

442474 (2011 UD309)          Discovered 2006-Aug-28 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

Alternate Designations
 2011 UD309 = 2006 SZ271 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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