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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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1976026904731296 4.5884e-08  
a 2.342386434522353 1.3045e-08 AU
q 1.879524572932974 1.0835e-07 AU
i 2.446321520558703 5.2153e-06 deg
node 166.5718634065576 0.00011473 deg
peri 83.77922637136768 0.0001156 deg
M 169.478818568366 1.6677e-05 deg
tp 2456384.048135647669
(2013-Apr-01.54813565)
5.7584e-05 JED
period 1309.441929330643
3.59
1.0939e-05
2.995e-08
d
yr
n .2749262811402592 2.2967e-09 deg/d
Q 2.805248296111731 1.5623e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1001  
   data-arc span      11199 days (30.66 yr)  
   first obs. used      1984-04-23  
   last obs. used      2014-12-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53271  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 02:12:25  

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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