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

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4569942895929648 3.8185e-08  
a 3.378665591223066 3.3634e-08 au
q 1.834634709589887 1.2997e-07 au
i 3.27428883296806 2.9336e-06 deg
node 17.14905612883728 6.9926e-05 deg
peri 115.4707420069554 7.1954e-05 deg
M 95.65834108937911 8.7956e-06 deg
tp 2458397.750880639318
(2018-Oct-06.25088064)
6.0101e-05 TDB
period 2268.382249772654
6.21
3.3872e-05
9.274e-08
d
yr
n .1587034107836457 2.3698e-09 deg/d
Q 4.922696472856246 4.9005e-08 au
  Orbit Determination Parameters
   # obs. used (total)      686  
   data-arc span      29066 days (79.58 yr)  
   first obs. used      1939-12-05  
   last obs. used      2019-07-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51938  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:32:07  

Additional Information
 Earth MOID = .851884 au 
 Jupiter MOID = .229563 au 
 T_jup = 2.971 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9   n/a MPO473838  

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 
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