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442487 (2011 UJ391)
Classification: Main-belt Asteroid          SPK-ID: 2442487
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 .2674334460602583 1.2755e-07  
a 2.654086349966356 3.3526e-08 au
q 1.944294891253361 3.5428e-07 au
i 12.56143091267782 9.3921e-06 deg
node 102.54486832228 4.115e-05 deg
peri 256.5354106288381 4.9177e-05 deg
M 22.26162219302411 2.5629e-05 deg
tp 2458902.838069077405
(2020-Feb-23.33806908)
0.00011107 TDB
period 1579.323143088447
4.32
2.9925e-05
8.193e-08
d
yr
n .22794575104877 4.319e-09 deg/d
Q 3.363877808679351 4.2492e-08 au
  Orbit Determination Parameters
   # obs. used (total)      137  
   data-arc span      6730 days (18.43 yr)  
   first obs. used      1998-09-19  
   last obs. used      2017-02-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57863  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-09 12:28:10  

Additional Information
 Earth MOID = .984715 au 
 Jupiter MOID = 2.22683 au 
 T_jup = 3.304 
[ 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 MPO402747  

442487 (2011 UJ391)          Discovered 2011-Sep-23 by CSS at Catalina
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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