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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1492041854765404 6.4673e-08  
a 2.38303776965603 1.5013e-08 au
q 2.027478560274671 1.5085e-07 au
i 2.423933252674621 8.3926e-06 deg
node 98.23093526874345 0.00020658 deg
peri 351.4677632078195 0.00020929 deg
M 186.4179190770631 3.3116e-05 deg
tp 2460044.383925779020
(2023-Apr-09.88392578)
0.00012604 TDB
period 1343.6767899101
3.68
1.2697e-05
3.476e-08
d
yr
n .2679215736279005 2.5318e-09 deg/d
Q 2.73859697903739 1.7252e-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 = 1.04409 au 
 Jupiter MOID = 2.44347 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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