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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1976144178386166 4.5938e-08  
a 2.342489027507147 1.3655e-08 AU
q 1.879579422042975 1.084e-07 AU
i 2.446284563562306 6.1788e-06 deg
node 166.5706600189977 0.00011641 deg
peri 83.8085272062094 0.00011765 deg
M 114.4554654376846 1.7156e-05 deg
tp 2456384.159355846866
(2013-Apr-01.65935585)
6.0783e-05 JED
period 1309.527957638092
3.59
1.145e-05
3.135e-08
d
yr
n .2749082200958182 2.4038e-09 deg/d
Q 2.805398632971319 1.6354e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      892  
   data-arc span      10779 days (29.51 yr)  
   first obs. used      1984-04-23  
   last obs. used      2013-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54504  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 20:06:27  

Additional Information
 Earth MOID = .867368 AU 
 T_jup = 3.536 
[ 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 14.6 mag n/a MPO266019  

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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