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39809 Fukuchan (1997 WB30)
Classification: Main-belt Asteroid          SPK-ID: 2039809
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2200674558817071 3.8225e-08  
a 2.229756650411285 7.6107e-09 au
q 1.739059777119957 8.6354e-08 au
i 5.409781885269604 4.7243e-06 deg
node 85.37304060524174 4.213e-05 deg
peri 278.5819227623378 4.3469e-05 deg
M 314.3519211656267 1.0345e-05 deg
tp 2459154.707193158136
(2020-Nov-01.20719316)
3.5086e-05 TDB
period 1216.142956165902
3.33
6.2265e-06
1.705e-08
d
yr
n .2960178309423108 1.5156e-09 deg/d
Q 2.720453523702614 9.2856e-09 au
  Orbit Determination Parameters
   # obs. used (total)      760  
   data-arc span      8870 days (24.28 yr)  
   first obs. used      1996-04-19  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55317  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 03:36:27  

Additional Information
 Earth MOID = .747241 au 
 Jupiter MOID = 2.75096 au 
 T_jup = 3.605 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.2   n/a MPO436049  
diameter diameter 1.527 km 0.213 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.331   0.093 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39809 Fukuchan           Discovered 1997 Nov. 30 by T. Seki at Geisei.
Fukuchan is the name of a boy character and the title of the cartoons created by Ryuichi Yokoyama (1909-2001), who was born in Kochi City. Yokoyama was a famous and respected cartoonist in Japan. Fukuchan was serialized in the Mainichi newspaper, appearing 5534 times from 1956 to 1971.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040504/MPCPages.arcLast Updated: 2004-05-11

Alternate Designations
 1997 WB30 = 2000 PJ19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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