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541505 (2011 QA20)
Classification: Main-belt Asteroid          SPK-ID: 2541505
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05910237026099888 9.8462e-08  
a 2.432202449397483 3.1545e-08 au
q 2.288453519683484 2.6279e-07 au
i 14.33390440413021 7.8383e-06 deg
node 339.5634540113023 2.3742e-05 deg
peri 259.5073621117677 0.00015724 deg
M 262.6382384704775 0.0001696 deg
tp 2459575.200205413600
(2021-Dec-26.70020541)
0.00065822 TDB
period 1385.472816327316
3.79
2.6954e-05
7.38e-08
d
yr
n .2598390930211875 5.0551e-09 deg/d
Q 2.575951379111481 3.341e-08 au
  Orbit Determination Parameters
   # obs. used (total)      130  
   data-arc span      5534 days (15.15 yr)  
   first obs. used      2006-01-23  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52256  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 13:25:23  

Additional Information
 Earth MOID = 1.32792 au 
 Jupiter MOID = 2.48732 au 
 T_jup = 3.462 
[ 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 17.47   .31062 MPCxxxxx autocmod 2.8

541505 (2011 QA20)          Discovered 2006-Jan-23 by Mount Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2019-12-13
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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