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541824 (2012 AK21)
Classification: Main-belt Asteroid          SPK-ID: 2541824
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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1394696425957701 1.1752e-07  
a 2.527057122736315 2.4735e-08 au
q 2.174609369009186 2.9744e-07 au
i 14.98440636742927 6.4665e-06 deg
node 347.8056674076976 3.842e-05 deg
peri 85.14679979567426 6.1681e-05 deg
M 107.9868151016418 4.5318e-05 deg
tp 2458760.361613367313
(2019-Oct-03.86161337)
0.00018548 TDB
period 1467.30708780167
4.02
2.1543e-05
5.898e-08
d
yr
n .2453474143162183 3.6023e-09 deg/d
Q 2.879504876463444 2.8185e-08 au
  Orbit Determination Parameters
   # obs. used (total)      217  
   data-arc span      6382 days (17.47 yr)  
   first obs. used      2002-08-11  
   last obs. used      2020-01-31  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56129  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 13:25:38  

Additional Information
 Earth MOID = 1.24719 au 
 Jupiter MOID = 2.45024 au 
 T_jup = 3.392 
[ 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 16.3   n/a E2018N80  

541824 (2012 AK21)          Discovered 2008-Jan-01 by CSS at Catalina
Reference: Last Updated: 2019-12-13

Alternate Designations
 2012 AK21 = 2008 AK113 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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