+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   14682 Davidhirsch (1999 XY110) Classification: Main-belt Asteroid          SPK-ID: 2014682 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 35 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1022502498617303 2.6661e-08   a 2.523742950934972 7.2175e-09 au q 2.26568960361509 6.6772e-08 au i 4.637980594762343 3.8681e-06 deg node 188.0862152615155 3.4373e-05 deg peri 318.4613378470192 3.9905e-05 deg M 61.12770252169476 1.9416e-05 deg tp 2459147.842434309492 (2020-Oct-25.34243431) 7.9031e-05 TDB period 1464.421529940744 4.01 6.2821e-06 1.72e-08 d yr n .2458308571949 1.0546e-09 deg/d Q 2.781796298254854 7.9555e-09 au   Orbit Determination Parameters    # obs. used (total)      2474      data-arc span      9354 days (25.61 yr)      first obs. used      1995-11-17      last obs. used      2021-06-27      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .44348      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 03:37:23   Additional Information  Earth MOID = 1.28025 au   Jupiter MOID = 2.22111 au   T_jup = 3.443  [ 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 14.28   n/a MPCxxxxx   diameter diameter 4.434 km 0.448 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.188   0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   14682 Davidhirsch           Discovered 1999 Dec. 5 by the Catalina Sky Survey. David Hirsch (b. 1973) is the Lockheed Martin Flight Software (FSW) Lead and Certified Principal Engineer (CPE) for the OSIRIS-REx Asteroid Sample Return Mission. He was also the FSW CPE for the MAVEN mission and the FSW Integrator for the Phoenix Mars Lander, MRO, Juno and Genesis missions. 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 2016-08-18 Last Updated: 2016-08-22 Alternate Designations  1999 XY110 = 1995 WX18 = 1997 JC10  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jul-23 20:26 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin