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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2198901851062999 3.4996e-08  
a 2.229395528539394 6.9982e-09 au
q 1.739173333093709 7.996e-08 au
i 5.409333701013555 3.3068e-06 deg
node 85.3690580972154 4.0538e-05 deg
peri 278.6452439414935 4.177e-05 deg
M 71.55288892490357 7.9941e-06 deg
tp 2459154.840547256270
(2020-Nov-01.34054726)
2.7074e-05 TDB
period 1215.847526143193
3.33
5.7249e-06
1.567e-08
d
yr
n .2960897581804202 1.3942e-09 deg/d
Q 2.719617723985079 8.537e-09 au
  Orbit Determination Parameters
   # obs. used (total)      978  
   data-arc span      9065 days (24.82 yr)  
   first obs. used      1996-04-19  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5315  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 20:44:50  

Additional Information
 Earth MOID = .74656 au 
 Jupiter MOID = 2.7534 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 16.29   n/a E2021B10  
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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