+ 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 | Close-Approach Data ] [ 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 .1023828791829154 2.8659e-08   a 2.52423415687571 8.8517e-09 au q 2.265795796162915 7.3676e-08 au i 4.637524288722355 3.9112e-06 deg node 188.0862758930218 4.2454e-05 deg peri 318.5304377624219 4.7782e-05 deg M 12.88317662444582 2.2288e-05 deg tp 2459148.078029019912 (2020-Oct-25.57802902) 9.0621e-05 TDB period 1464.84908986051 4.01 7.7052e-06 2.11e-08 d yr n .2457591041233339 1.2927e-09 deg/d Q 2.782672517588503 9.758e-09 au   Orbit Determination Parameters    # obs. used (total)      2096      data-arc span      9194 days (25.17 yr)      first obs. used      1995-11-17      last obs. used      2021-01-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .4685      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 02:19:36   Additional Information  Earth MOID = 1.27945 au   Jupiter MOID = 2.22076 au   T_jup = 3.443  [ 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 14.27   n/a E2021B10   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 [ show close-approach data ] Alternate Designations  1999 XY110 = 1995 WX18 = 1997 JC10  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-12 20:17 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin