+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   22347 Mishinatakashi (1992 SE13) Classification: Main-belt Asteroid          SPK-ID: 2022347 [ 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 24 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2003544321359929 3.0257e-08   a 2.371951536266727 7.2147e-09 au q 1.896720533163911 7.0403e-08 au i 2.153880472915597 3.5248e-06 deg node 356.2428625669585 8.2459e-05 deg peri 75.33664465285479 8.2891e-05 deg M 216.4415902834735 8.3111e-06 deg tp 2459732.587776061899 (2022-Jun-02.08777606) 3.1759e-05 TDB period 1334.311237917204 3.65 6.0878e-06 1.667e-08 d yr n .2698021194529867 1.231e-09 deg/d Q 2.847182539369543 8.6602e-09 au   Orbit Determination Parameters    # obs. used (total)      1660      data-arc span      14172 days (38.80 yr)      first obs. used      1981-09-25      last obs. used      2020-07-14      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .50466      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 04:04:45   Additional Information  Earth MOID = .912158 au   Jupiter MOID = 2.44077 au   T_jup = 3.516  [ 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 14.69   n/a E2021B10   diameter diameter 3.544 km 0.087 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.223   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   22347 Mishinatakashi           Discovered 1992 Sept. 30 by K. Endate and K. Watanabe at Kitami. Takashi Mishina (b. 1953) is a Japanese editor of natural science and an illustrator. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: MPC batch dated 2018-10-26 Last Updated: 2018-10-30 [ show close-approach data ] Alternate Designations  1992 SE13 = 1981 ST4 = 1999 RP217 = 2000 YX18  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-23 03:41 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin