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117421 (2005 AA18)
Classification: Main-belt Asteroid          SPK-ID: 2117421
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08595257306637936 3.6286e-08  
a 2.200970199485551 9.3112e-09 au
q 2.011791147597345 7.8132e-08 au
i 5.896569212876948 4.8962e-06 deg
node 290.3900883611681 3.738e-05 deg
peri 269.1612924663752 4.7131e-05 deg
M 190.7730044824776 2.9089e-05 deg
tp 2459561.143528725246
(2021-Dec-12.64352873)
9.676e-05 TDB
period 1192.668283945219
3.27
7.5684e-06
2.072e-08
d
yr
n .3018441966186595 1.9154e-09 deg/d
Q 2.390149251373756 1.0112e-08 au
  Orbit Determination Parameters
   # obs. used (total)      642  
   data-arc span      7465 days (20.44 yr)  
   first obs. used      1999-05-18  
   last obs. used      2019-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61219  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 13:51:01  

Additional Information
 Earth MOID = 1.01945 au 
 Jupiter MOID = 2.60125 au 
 T_jup = 3.653 
[ 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 16.2   n/a MPO436564  

117421 (2005 AA18)          Discovered 2005-Jan-06 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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