+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 29 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1975750107911823 4.3624e-08   a 2.246861846611331 7.5231e-09 au q 1.802938093020802 9.6214e-08 au i 5.179866144420665 3.777e-06 deg node 147.2394075209912 4.035e-05 deg peri 199.3328977499066 4.1121e-05 deg M 160.3747531488555 9.7824e-06 deg tp 2458452.479907700280 (2018-Nov-29.97990770) 3.2257e-05 TDB period 1230.163908933861 3.37 6.1784e-06 1.692e-08 d yr n .2926439293053225 1.4698e-09 deg/d Q 2.69078560020186 9.0095e-09 au   Orbit Determination Parameters    # obs. used (total)      1544      data-arc span      11544 days (31.61 yr)      first obs. used      1988-09-12      last obs. used      2020-04-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51688      source      ORB      producer      Otto Matic      solution date      2020-May-20 06:01:24   Additional Information  Earth MOID = .796617 au   Jupiter MOID = 2.7229 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 14.8   n/a MPO452536   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 ] 2020-Aug-11 17:04 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin