+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   22719 Nakadori (1998 SH25) Classification: Main-belt Asteroid          SPK-ID: 2022719 [ 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 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .02100219822891183 1.4218e-08   a 2.742585895553879 1.1109e-08 au q 2.684985562915639 3.8752e-08 au i 6.32819791778881 1.0077e-06 deg node 71.70301451750949 4.6202e-06 deg peri 208.292704961446 6.3655e-05 deg M 58.54570790662167 6.0404e-05 deg tp 2458930.706585204932 (2020-Mar-22.20658520) 0.0002787 TDB period 1658.970961306613 4.54 1.008e-05 2.76e-08 d yr n .2170019900266743 1.3185e-09 deg/d Q 2.800186228192119 1.1342e-08 au   Orbit Determination Parameters    # obs. used (total)      2262      data-arc span      10926 days (29.91 yr)      first obs. used      1991-02-05      last obs. used      2021-01-04      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .503      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 04:10:25   Additional Information  Earth MOID = 1.66855 au   Jupiter MOID = 2.21058 au   T_jup = 3.340  [ 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 13.1   n/a MPO474064   diameter diameter 13.324 km 0.103 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.047   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   22719 Nakadori           Discovered 1998 Sept. 22 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station. Nakadori is the central part of Fukushima prefecture, Japan, and is located between the Ou Mountains and Abukuma highland. Nakadori's capital is Fukushima. The region also contains the important transportation center of Koriyama. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20120506/MPCPages.arc Last Updated: 2012-05-09 Alternate Designations  1998 SH25 = 1997 MZ11  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-21 06:17 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin