+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11462 Hsingwenlin (1981 ES23) Classification: Main-belt Asteroid          SPK-ID: 2011462 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09917830045775472 6.356e-08   a 2.569143017124691 1.3607e-08 au q 2.314339779053356 1.5969e-07 au i 1.494179030538425 4.4368e-06 deg node 155.3139933944856 0.00020562 deg peri 243.3532862088293 0.0002068 deg M 316.7351072830645 2.0269e-05 deg tp 2459181.264847292516 (2020-Nov-27.76484729) 8.4597e-05 TDB period 1504.114327777651 4.12 1.1949e-05 3.271e-08 d yr n .2393435082371064 1.9014e-09 deg/d Q 2.823946255196025 1.4956e-08 au   Orbit Determination Parameters    # obs. used (total)      891      data-arc span      13560 days (37.13 yr)      first obs. used      1981-02-09      last obs. used      2018-03-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54393      source      ORB      producer      Otto Matic      solution date      2018-Apr-05 12:17:13   Additional Information  Earth MOID = 1.32223 au   Jupiter MOID = 2.53294 au   T_jup = 3.423  [ 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 14.9   n/a MPO395111   11462 Hsingwenlin           Discovered 1981 Mar. 3 by S. J. Bus at Siding Spring. Hsing-Wen "Edward" Lin (b. 1982) is a postdoctoral researcher at the National Central University of Taiwan whose research spans from trans-Neptunian objects, to Centaurs, Neptune Trojans and main-belt asteroids. 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 2017-03-12 Last Updated: 2017-04-19 [ show close-approach data ] Alternate Designations  1981 ES23 = 1991 RW40  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-04 09:38 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin