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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1976026903246411 4.5868e-08  
a 2.34238643421314 1.298e-08 AU
q 1.879524573032681 1.0834e-07 AU
i 2.446321147730787 5.0166e-06 deg
node 166.57186129571 0.00011466 deg
peri 83.77922918674882 0.00011549 deg
M 169.4788181687706 1.6581e-05 deg
tp 2456384.048137223197
(2013-Apr-01.54813722)
5.7156e-05 JED
period 1309.44192907136
3.59
1.0884e-05
2.98e-08
d
yr
n .2749262811946977 2.2852e-09 deg/d
Q 2.805248295393599 1.5545e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1077  
   data-arc span      11260 days (30.83 yr)  
   first obs. used      1984-04-23  
   last obs. used      2015-02-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52593  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:41:20  

Additional Information
 Earth MOID = .86896 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 14.7 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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