+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   22745 Rikuzentakata (1998 TN34) Classification: Main-belt Asteroid          SPK-ID: 2022745 [ 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 34 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1128878069913441 1.7823e-08   a 2.71220056942758 9.4694e-09 au q 2.406026195024226 4.7403e-08 au i 13.00794561674808 3.9866e-07 deg node 44.07243136684276 2.631e-06 deg peri 213.4337612087598 1.0805e-05 deg M 110.4122802984172 9.7005e-06 deg tp 2458700.124531671338 (2019-Aug-04.62453167) 4.3243e-05 TDB period 1631.477659110539 4.47 8.5442e-06 2.339e-08 d yr n .2206588597702695 1.1556e-09 deg/d Q 3.018374943830935 1.0538e-08 au   Orbit Determination Parameters    # obs. used (total)      2306      data-arc span      10517 days (28.79 yr)      first obs. used      1992-04-28      last obs. used      2021-02-12      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .46748      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 04:11:12   Additional Information  Earth MOID = 1.40115 au   Jupiter MOID = 2.02945 au   T_jup = 3.316  [ 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 13.57   n/a E2021B10   diameter diameter 4.899 km 0.069 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.343   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   22745 Rikuzentakata           Discovered 1998 Oct. 14 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station. A city in Iwate, Japan, Rikuzentakata was heavily damaged by the 2011 tsunami. Its nationally designated place of scenic beauty, Takata-matsubara, was so affected that there remained only one of 70000 palm trees. 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 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-18 21:34 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin