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541686 (2011 UQ399)
Classification: Main-belt Asteroid          SPK-ID: 2541686
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1494456514279458 6.4743e-08  
a 2.382602604286876 1.5057e-08 au
q 2.026533005995304 1.5107e-07 au
i 2.424061674768105 8.3927e-06 deg
node 98.22986254085903 0.00020658 deg
peri 351.4924494274488 0.00020927 deg
M 133.8585418848274 3.2867e-05 deg
tp 2458701.018468961814
(2019-Aug-05.51846896)
0.00012107 TDB
period 1343.30875446454
3.68
1.2733e-05
3.486e-08
d
yr
n .2679949779256077 2.5404e-09 deg/d
Q 2.738672202578448 1.7307e-08 au
  Orbit Determination Parameters
   # obs. used (total)      83  
   data-arc span      9564 days (26.18 yr)  
   first obs. used      1994-01-14  
   last obs. used      2020-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .62551  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 20:24:06  

Additional Information
 Earth MOID = 1.04282 au 
 Jupiter MOID = 2.44321 au 
 T_jup = 3.521 
[ 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 18.37   .3061 E2021B25 autocmod 2.8

541686 (2011 UQ399)          Discovered 1994-Jan-14 by Spacewatch at Kitt Peak
Reference: Last Updated: 2019-12-13

Alternate Designations
 2011 UQ399 = 1994 AC15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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