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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1380046305060286 6.792e-08  
a 3.132579943712464 2.9609e-08 au
q 2.70026940604983 2.2253e-07 au
i 6.675215887900633 6.4748e-06 deg
node 281.9405465402607 7.0374e-05 deg
peri 106.3107958730301 7.7804e-05 deg
M 19.31522454482755 3.269e-05 deg
tp 2457491.845196189230
(2016-Apr-13.34519619)
0.00018339 JED
period 2025.124237157887
5.54
2.8712e-05
7.861e-08
d
yr
n .1777668714810473 2.5203e-09 deg/d
Q 3.564890481375099 3.3695e-08 au
  Orbit Determination Parameters
   # obs. used (total)      757  
   data-arc span      12155 days (33.28 yr)  
   first obs. used      1982-09-20  
   last obs. used      2015-12-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55783  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 19:28:33  

Additional Information
 Earth MOID = 1.71375 au 
 Jupiter MOID = 1.93319 au 
 T_jup = 3.188 
[ 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. 2016-February); 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. (2016) 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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