+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   14551 Itagaki (1997 UN8) Classification: Main-belt Asteroid          SPK-ID: 2014551 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 33 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2208360154356971 2.9215e-08   a 2.748406563714149 1.0132e-08 au q 2.1414594093862 7.9755e-08 au i 7.069514580290611 4.6176e-06 deg node 25.516236589004 2.5791e-05 deg peri 259.6286344111589 2.7878e-05 deg M 98.07771006068729 1.0879e-05 deg tp 2458747.093534327585 (2019-Sep-20.59353433) 4.9419e-05 TDB period 1664.255084474039 4.56 9.2032e-06 2.52e-08 d yr n .2163129939385297 1.1962e-09 deg/d Q 3.355353718042098 1.237e-08 au   Orbit Determination Parameters    # obs. used (total)      2603      data-arc span      13650 days (37.37 yr)      first obs. used      1983-09-06      last obs. used      2021-01-19      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .4066      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 02:18:47   Additional Information  Earth MOID = 1.13725 au   Jupiter MOID = 1.875 au   T_jup = 3.300  [ 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 13.55   n/a E2020-QM5   diameter diameter 10.364 km 0.162 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 5.94719 h n/a LCDB (Rev. 2020-October); 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: [Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.] [Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.] geometric albedo albedo 0.084   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   14551 Itagaki           Discovered 1997 Oct. 22 by T. Okuni at Nanyo. Koichi Itagaki (b. 1947), a confectionery manufacturing industry president, is also an amateur astronomer in Yamagata. He is credited with the discovery of supernovae 2001bq and 2001gd. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20020128/MPCPages.arc Last Updated: 2003-10-02 [ show close-approach data ] Alternate Designations  1997 UN8 = 1983 RY6 = 2000 DK101  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-02 18:51 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin