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11476 Stefanosimoni (1984 HH1)
Classification: Main-belt Asteroid          SPK-ID: 2011476
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1971667399155272 4.5552e-08  
a 2.343621795712266 1.2847e-08 au
q 1.881537526656704 1.0789e-07 au
i 2.446865701438915 4.9399e-06 deg
node 166.5549485707818 0.00011388 deg
peri 83.6585076131594 0.00011469 deg
M 279.5549351132838 1.7117e-05 deg
tp 2457693.337455708341
(2016-Oct-31.83745571)
6.3978e-05 JED
period 1310.477954159881
3.59
1.0775e-05
2.95e-08
d
yr
n .2747089326129017 2.2588e-09 deg/d
Q 2.805706064767827 1.538e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1105  
   data-arc span      11561 days (31.65 yr)  
   first obs. used      1984-04-23  
   last obs. used      2015-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52829  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:17:52  

Additional Information
 Earth MOID = .868295 au 
 Jupiter MOID = 2.22804 au 
 T_jup = 3.535 
[ 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 14.7 mag n/a MPO319229  

11476 Stefanosimoni           Discovered 1984 Apr. 23 by V. Zappala at the European Southern Observatory.
Stefano Simoni (b. 1974) is an Italian amateur astronomer. He created and maintains a very popular non-profit Italian blog devoted to the dissemination of astronomy and astrophysics.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20121029/MPCPages.arcLast Updated: 2013-03-29

[ show close-approach data ]
Alternate Designations
 1984 HH1 = 1991 EV8 = 1998 CT4 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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