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JPL Small-Body Database Browser
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442409 (2011 UJ81)
Classification: Main-belt Asteroid          SPK-ID: 2442409
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09574785471296317 6.3328e-08  
a 2.867970012806985 5.4285e-08 au
q 2.593368036699607 2.1396e-07 au
i 2.886779916755232 5.2978e-06 deg
node 63.3774983775836 0.00011518 deg
peri 259.6035474049045 0.00011966 deg
M 267.2181252764213 3.4366e-05 deg
tp 2459057.715535578164
(2020-Jul-27.21553558)
0.00017729 TDB
period 1774.027452005232
4.86
5.0369e-05
1.379e-07
d
yr
n .2029280886229139 5.7616e-09 deg/d
Q 3.142571988914364 5.9483e-08 au
  Orbit Determination Parameters
   # obs. used (total)      171  
   data-arc span      6407 days (17.54 yr)  
   first obs. used      2001-10-23  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63058  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 10:13:26  

Additional Information
 Earth MOID = 1.58204 au 
 Jupiter MOID = 2.12256 au 
 T_jup = 3.290 
[ 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 MPO437720  

442409 (2011 UJ81)          Discovered 2006-Sep-30 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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