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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1383452203826734 8.5057e-08  
a 3.133168128632693 4.2464e-08 AU
q 2.699709293381034 2.5987e-07 AU
i 6.675914516206917 7.4977e-06 deg
node 281.9561169204189 7.5232e-05 deg
peri 106.3803612694091 8.1941e-05 deg
M 272.6271723588896 3.3863e-05 deg
tp 2457492.140744088903
(2016-Apr-13.64074409)
0.00019489 JED
period 2025.69463127605
5.55
4.1182e-05
1.128e-07
d
yr
n .1777168159710353 3.6129e-09 deg/d
Q 3.566626963884351 4.8339e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      585  
   data-arc span      11968 days (32.77 yr)  
   first obs. used      1982-09-20  
   last obs. used      2015-06-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59945  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:26:54  

Additional Information
 Earth MOID = 1.71438 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 13.7 mag n/a MPO263529  
rotation period rot_per 212.5033 h n/a LCDB (Rev. 2015-July); 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., in press.]

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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