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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1968868878977337 4.0786e-08  
a 2.343251244811347 1.1525e-08 au
q 1.88189579965795 9.8978e-08 au
i 2.447396264293124 4.919e-06 deg
node 166.5553561394986 0.00010077 deg
peri 83.65334800800603 0.00010167 deg
M 334.4798045215582 1.6284e-05 deg
tp 2457693.377006087217
(2016-Oct-31.87700609)
5.9707e-05 JED
period 1310.167166221072
3.59
9.6657e-06
2.646e-08
d
yr
n .2747740969866858 2.0271e-09 deg/d
Q 2.804606689964744 1.3794e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1246  
   data-arc span      11672 days (31.96 yr)  
   first obs. used      1984-04-23  
   last obs. used      2016-04-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:11:53  

Additional Information
 Earth MOID = .869607 au 
 Jupiter MOID = 2.23011 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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