+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   21014 Daishi (1988 TS1) Classification: Main-belt Asteroid          SPK-ID: 2021014 [ 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 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2103324260387328 3.9322e-08   a 3.148479825160219 2.0873e-08 au q 2.486252425200266 1.2598e-07 au i 1.581797697487515 4.3183e-06 deg node 173.6571567006844 0.00015339 deg peri 222.0277570779546 0.0001537 deg M 289.4429683641891 1.3008e-05 deg tp 2459600.433330511964 (2022-Jan-20.93333051) 7.6383e-05 TDB period 2040.562019777949 5.59 2.0292e-05 5.556e-08 d yr n .176421983997906 1.7544e-09 deg/d Q 3.810707225120173 2.5263e-08 au   Orbit Determination Parameters    # obs. used (total)      1063      data-arc span      25402 days (69.55 yr)      first obs. used      1949-11-21      last obs. used      2019-06-09      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56213      source      ORB      producer      Otto Matic      solution date      2020-Feb-22 23:16:57   Additional Information  Earth MOID = 1.49238 au   Jupiter MOID = 1.62312 au   T_jup = 3.173  [ 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 13.9   n/a MPO347686   diameter diameter 7.680 km 0.193 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.131   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   21014 Daishi           Discovered 1988 Oct. 13 by T. Seki at Geisei. Daishi is the grade school, established in Kochi city in 1880, that was attended by the discoverer from 1937 to 1943. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20020624/MPCPages.arc Last Updated: 2003-10-02 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-12 16:25 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin