+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 24 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2198425729467578 3.5056e-08   a 2.22909476184059 7.0201e-09 au q 1.739044834055414 8.0108e-08 au i 5.409527502274447 3.3111e-06 deg node 85.3688652901176 4.0617e-05 deg peri 278.6143467871124 4.1848e-05 deg M 13.54158628170735 8.0237e-06 deg tp 2459154.774520929696 (2020-Nov-01.27452093) 2.711e-05 TDB period 1215.601490317731 3.33 5.7424e-06 1.572e-08 d yr n .2961496862807433 1.399e-09 deg/d Q 2.719144689625765 8.5634e-09 au   Orbit Determination Parameters    # obs. used (total)      969      data-arc span      9028 days (24.72 yr)      first obs. used      1996-04-19      last obs. used      2021-01-06      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52609      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 04:15:58   Additional Information  Earth MOID = .745681 au   Jupiter MOID = 2.75325 au   T_jup = 3.606  [ 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.arc Last Updated: 2004-05-11 Alternate Designations  1997 WB30 = 2000 PJ19  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-10 13:09 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin