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154391 (2003 AQ20)
Classification: Main-belt Asteroid          SPK-ID: 2154391
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1475543847668844 4.0288e-08  
a 2.388799376357711 1.4286e-08 au
q 2.036321554047732 9.6319e-08 au
i 2.989112666395152 6.0135e-06 deg
node 174.4646310002117 9.712e-05 deg
peri 239.4196603711558 9.9962e-05 deg
M 306.4133748328613 2.6061e-05 deg
tp 2459201.234420264356
(2020-Dec-17.73442026)
9.862e-05 TDB
period 1348.552760502697
3.69
1.2097e-05
3.312e-08
d
yr
n .2669528479299568 2.3947e-09 deg/d
Q 2.74127719866769 1.6393e-08 au
  Orbit Determination Parameters
   # obs. used (total)      355  
   data-arc span      9091 days (24.89 yr)  
   first obs. used      1994-09-29  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64505  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 03:37:26  

Additional Information
 Earth MOID = 1.04941 au 
 Jupiter MOID = 2.60041 au 
 T_jup = 3.517 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456934.5 (2014-Oct-04.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1489899956966837 4.0491e-08  
q 2.032630958180103 9.7062e-08 au
tp 2456501.890435701878
(2013-Jul-28.39043570)
8.5709e-05 TDB
node 174.5943071829141 9.7081e-05 deg
peri 238.8483614237234 9.9846e-05 deg
i 2.989488005392603 6.0141e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      355  
   data-arc span      9091 days (24.89 yr)  
   first obs. used      1994-09-29  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64505  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 03:37:26  

Additional Information
 Jupiter MOID = 2.60041 au 
 T_jup = 3.517 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.639543290305907E-15 -3.899485098698893E-15 -6.856621397960124E-14 -5.072683565757968E-15 -2.776064334150514E-14 1.283090288706286E-16
q -3.899485098698893E-15 9.420990689811084E-15 5.446858360877917E-13 1.074606240693036E-14 1.762565447919824E-13 -2.070306767610824E-16
tp -6.856621397960124E-14 5.446858360877917E-13 7.346075473632098E-9 -1.814187519469849E-11 2.022819998016482E-9 -2.018085778786234E-12
node -5.072683565757968E-15 1.074606240693036E-14 -1.814187519469849E-11 9.424660597890229E-9 -9.415955182464569E-9 -1.474469750352585E-10
peri -2.776064334150514E-14 1.762565447919824E-13 2.022819998016482E-9 -9.415955182464569E-9 9.969247700671562E-9 1.467091597684926E-10
i 1.283090288706286E-16 -2.070306767610824E-16 -2.018085778786234E-12 -1.474469750352585E-10 1.467091597684926E-10 3.616930185561981E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.8   n/a MPO436781  

154391 (2003 AQ20)          Discovered 2003-Jan-05 by LINEAR at Socorro
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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