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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2678499414527735 1.2755e-07  
a 2.655749861834188 3.4222e-08 au
q 1.944407416828689 3.5501e-07 au
i 12.55896899958523 9.3868e-06 deg
node 102.5464656455606 4.1159e-05 deg
peri 256.4495138726932 4.9107e-05 deg
M 291.2068940757149 2.4233e-05 deg
tp 2458902.579737475127
(2020-Feb-23.07973748)
0.00011068 TDB
period 1580.808193349151
4.33
3.0556e-05
8.366e-08
d
yr
n .2277316131802761 4.4018e-09 deg/d
Q 3.367092306839687 4.3388e-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 = .983932 au 
 Jupiter MOID = 2.22008 au 
 T_jup = 3.303 
[ 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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