+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   26240 Leigheriks (1998 QX39) Classification: Main-belt Asteroid          SPK-ID: 2026240 [ 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 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1977530678100049 4.2957e-08   a 2.246522327560093 7.4415e-09 au q 1.802265645381412 9.4823e-08 au i 5.180230379565759 3.7618e-06 deg node 147.2408470077716 4.0269e-05 deg peri 199.3460597870722 4.1038e-05 deg M 218.8916358687851 9.8915e-06 deg tp 2459682.575202266057 (2022-Apr-13.07520227) 3.5007e-05 TDB period 1229.885087849232 3.37 6.1109e-06 1.673e-08 d yr n .2927102731439341 1.4544e-09 deg/d Q 2.690779009738774 8.913e-09 au   Orbit Determination Parameters    # obs. used (total)      1563      data-arc span      11822 days (32.37 yr)      first obs. used      1988-09-12      last obs. used      2021-01-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51664      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 03:18:23   Additional Information  Earth MOID = .794144 au   Jupiter MOID = 2.72344 au   T_jup = 3.599  [ 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 14.98   n/a E2021B10   diameter diameter 2.534 km 0.362 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)   geometric albedo albedo 0.332   0.123 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   26240 Leigheriks           Discovered 1998 Aug. 17 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Leigh Eriks mentored a finalist in the 2010 Intel Science Talent Search (STS), a science competition for high school seniors. She teaches at the Catholic Central High School, Grand Rapids, Michigan. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20100228/MPCPages.arc Last Updated: 2010-10-29 Alternate Designations  1998 QX39 = 1988 RP8 = 2000 CX29  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-03 00:42 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin