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11157 (1998 AJ)
Classification: Main-belt Asteroid          SPK-ID: 2011157
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1811664357967308 5.0045e-08  
a 3.103573998277324 2.145e-08 au
q 2.541310558778012 1.5578e-07 au
i 4.109288164176811 5.1217e-06 deg
node 118.4078764001492 8.0761e-05 deg
peri 305.9835440347138 8.2501e-05 deg
M 136.8769552711821 1.5622e-05 deg
tp 2456641.189475994740
(2013-Dec-14.68947599)
8.5218e-05 JED
period 1997.062165068809
5.47
2.0704e-05
5.668e-08
d
yr
n .180264794104492 1.8688e-09 deg/d
Q 3.665837437776636 2.5336e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1149  
   data-arc span      16669 days (45.64 yr)  
   first obs. used      1969-11-15  
   last obs. used      2015-07-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55778  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:32:15  

Additional Information
 Earth MOID = 1.55667 au 
 Jupiter MOID = 1.66996 au 
 T_jup = 3.192 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.2 mag n/a MPO337352  

11157 (1998 AJ)          Discovered 1998-Jan-02 by Shimizu, Y., Urata, T. at Nachi-Katsuura
Reference: 19990728/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 AJ = 1969 VQ2 = 1980 VU2 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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