+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   27303 Leitner (2000 AT180) Classification: Main-belt Asteroid          SPK-ID: 2027303 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 22 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1084963391972731 3.0735e-08   a 2.2753104688147 7.7711e-09 au q 2.028447612411074 7.224e-08 au i 5.583212105398259 4.5133e-06 deg node 197.6871238267683 3.6227e-05 deg peri 243.7804417567338 4.2958e-05 deg M 2.602982465350688 2.2816e-05 deg tp 2458991.435827411803 (2020-May-21.93582741) 7.9442e-05 TDB period 1253.601272842703 3.43 6.4223e-06 1.758e-08 d yr n .287172650346512 1.4712e-09 deg/d Q 2.522173325218326 8.6142e-09 au   Orbit Determination Parameters    # obs. used (total)      1300      data-arc span      8370 days (22.92 yr)      first obs. used      1997-03-05      last obs. used      2020-02-03      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56007      source      ORB      producer      Otto Matic      solution date      2020-Feb-23 01:00:50   Additional Information  Earth MOID = 1.05114 au   Jupiter MOID = 2.67908 au   T_jup = 3.595  [ 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 15.2   n/a MPO502361   diameter diameter 2.717 km 0.082 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 38.541 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so. Published Reference List: [Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.] [Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.] geometric albedo albedo 0.262   0.050 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   27303 Leitner           Discovered 2000 Jan. 7 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Roxanne Leitner mentored a finalist in the 2011 Intel Science Talent Search, a science competition for high-school seniors. She teaches at the Ursuline Academy Of Dallas, Dallas, Texas, U.S.A. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20110319/MPCPages.arc Last Updated: 2011-03-23 Alternate Designations  2000 AT180 = 1997 EB51  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Aug-03 19:07 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin