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JPL Small-Body Database Browser
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11158 Cirou (1998 AJ6)
Classification: Main-belt Asteroid          SPK-ID: 2011158
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06002404007786768 4.0582e-08  
a 2.195145141907272 6.6714e-09 au
q 2.063383661932694 8.9991e-08 au
i 2.871152069855911 3.9321e-06 deg
node 2.622520989753297 7.8808e-05 deg
peri 43.51253658618745 8.535e-05 deg
M 64.81408874861104 3.1024e-05 deg
tp 2458786.624909233674
(2019-Oct-30.12490923)
0.00010259 TDB
period 1187.936668746689
3.25
5.4155e-06
1.483e-08
d
yr
n .3030464581750907 1.3815e-09 deg/d
Q 2.326906621881851 7.0719e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1700  
   data-arc span      12236 days (33.50 yr)  
   first obs. used      1986-08-01  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44613  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 19:57:18  

Additional Information
 Earth MOID = 1.07318 au 
 Jupiter MOID = 2.85415 au 
 T_jup = 3.665 
[ 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 14.3   n/a MPO502255  

11158 Cirou           Discovered 1998 Jan. 8 by the OCA-DLR Asteroid Survey at Caussols.
Alain Cirou (b. 1958) is editor of Ciel et Espace magazine. He began working for the Association Française d´Astronomie in 1981 and has brought its magazine to its current monthly readership of 70~000. He has also popularized astronomy on radio and television.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000726/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 1998 AJ6 = 1986 PS1 = 1988 CZ6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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