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20394 Fatou (1998 MQ17)
Classification: Main-belt Asteroid          SPK-ID: 2020394
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1342239813018836 4.8051e-08  
a 3.141003327937475 2.4008e-08 au
q 2.719405355979241 1.5916e-07 au
i 6.679008658615258 4.6937e-06 deg
node 281.879788731054 4.9306e-05 deg
peri 105.7010511458164 5.4086e-05 deg
M 268.6637457334949 2.3291e-05 deg
tp 2459516.371716906251
(2021-Oct-28.87171691)
0.00013499 TDB
period 2033.297944804764
5.57
2.3312e-05
6.382e-08
d
yr
n .177052261779848 2.03e-09 deg/d
Q 3.562601299895709 2.7231e-08 au
  Orbit Determination Parameters
   # obs. used (total)      988  
   data-arc span      13404 days (36.70 yr)  
   first obs. used      1982-09-20  
   last obs. used      2019-06-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59633  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 23:05:56  

Additional Information
 Earth MOID = 1.73412 au 
 Jupiter MOID = 1.93397 au 
 T_jup = 3.186 
[ 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 13.7   n/a MPO435888  
diameter diameter 10.363 km 0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 212.503 h n/a LCDB (Rev. 2019-August); 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.]
geometric albedo albedo 0.062   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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