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5201 Ferraz-Mello (1983 XF)
Classification: Outer Main-belt Asteroid          SPK-ID: 2005201
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4582419739533841 5.9555e-08  
a 3.366896753932865 1.2073e-07 AU
q 1.824043339313428 2.019e-07 AU
i 3.283790008658671 5.4051e-06 deg
node 17.4719727781944 0.00013337 deg
peri 114.6948171798874 0.00013686 deg
M 137.3707904075662 1.6661e-05 deg
tp 2456139.436814284718
(2012-Jul-30.93681428)
0.00011269 JED
period 2256.540462043
6.18
0.00012137
3.323e-07
d
yr
n .1595362485430762 8.5809e-09 deg/d
Q 4.909750168552302 1.7605e-07 AU
  Orbit Determination Parameters
   # obs. used (total)      386  
   data-arc span      27233 days (74.56 yr)  
   first obs. used      1939-12-05  
   last obs. used      2014-06-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53496  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:11:19  

Additional Information
 Earth MOID = .841699 AU 
 T_jup = 2.973 
[ 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 MPO298999  

5201 Ferraz-Mello           Discovered 1983 Dec. 1 by E. Bowell at the Anderson Mesa Station of the Lowell Observatory.
Named in honor of Sylvio Ferraz-Mello (b. 1936), dynamicist at the University of São Paulo, well known for a number of contributions to solar-system dynamics. These include a perturbation model valid for very high eccentricities, the discovery of chaotic eccentricity jumps to values larger than 0.9 in the 3:1 resonance with Jupiter, and the explanation of the lack of large long-lived objects in the 2:1 resonance, in contrast to the existence of many objects in the 3:2 resonance (Hildas). In other areas, he has worked on a Fourier transform able to deal with unevenly spaced observations, Hamiltonian perturbation theories for nonlinear resonances, and the study of variable dMe stars. Ferraz-Mello served as president of IAU Commission 7 (Celestial Mechanics) from 1994 to 1997.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990728/MPCPages.arcLast Updated: 2010-06-11

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Alternate Designations
 1983 XF = 1979 FL4 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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