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20394 Fatou (1998 MQ17)
Classification: Main-belt Asteroid          SPK-ID: 2020394
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1381427549339417 6.7897e-08  
a 3.133082599080826 2.9564e-08 au
q 2.700269937408206 2.2245e-07 au
i 6.674949859927457 6.4817e-06 deg
node 281.947719253844 7.038e-05 deg
peri 106.3368045063169 7.7803e-05 deg
M 343.7408055408538 3.2516e-05 deg
tp 2457491.985595254805
(2016-Apr-13.48559525)
0.00018337 JED
period 2025.61168540568
5.55
2.8671e-05
7.85e-08
d
yr
n .1777240932177487 2.5156e-09 deg/d
Q 3.565895260753446 3.3648e-08 au
  Orbit Determination Parameters
   # obs. used (total)      756  
   data-arc span      12125 days (33.20 yr)  
   first obs. used      1982-09-20  
   last obs. used      2015-12-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55684  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:45:08  

Additional Information
 Earth MOID = 1.71364 au 
 Jupiter MOID = 1.9337 au 
 T_jup = 3.187 
[ 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 13.8 mag n/a MPO358825  
rotation period rot_per 212.5033 h n/a LCDB (Rev. 2015-December); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

20394 Fatou           Discovered 1998 June 28 by P. G. Comba at Prescott.
Pierre Joseph Louis Fatou (1878-1929) was employed at the observatory of Paris all his working life, but his main interest was mathematics. He proved a fundamental theorem regarding Lebesgue integrals of sequences of functions.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010509/MPCPages.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 1998 MQ17 = 1982 SC9 = 2000 AK52 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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