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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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1976026925532154 4.5939e-08  
a 2.342386437947095 1.3547e-08 AU
q 1.879524570808614 1.0838e-07 AU
i 2.446321522883581 6.13e-06 deg
node 166.571862409534 0.000116 deg
peri 83.77921946271383 0.00011721 deg
M 169.4788230409683 1.7337e-05 deg
tp 2456384.048118027352
(2013-Apr-01.54811803)
6.0537e-05 JED
period 1309.441932202395
3.59
1.136e-05
3.11e-08
d
yr
n .2749262805373154 2.385e-09 deg/d
Q 2.805248305085576 1.6224e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      899  
   data-arc span      11056 days (30.27 yr)  
   first obs. used      1984-04-23  
   last obs. used      2014-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54453  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:18:48  

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 14.6 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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