+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 28 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1024544404039514 2.8912e-08   a 2.524357983099947 9.0573e-09 au q 2.265726298562194 7.4411e-08 au i 4.637241206888435 3.9681e-06 deg node 188.0925062028367 4.305e-05 deg peri 318.5765986877294 4.8491e-05 deg M 323.6923862250529 2.2868e-05 deg tp 2459148.247468157691 (2020-Oct-25.74746816) 9.3278e-05 TDB period 1464.956878368864 4.01 7.8843e-06 2.159e-08 d yr n .2457410216748749 1.3226e-09 deg/d Q 2.7829896676377 9.9853e-09 au   Orbit Determination Parameters    # obs. used (total)      1966      data-arc span      8840 days (24.20 yr)      first obs. used      1995-11-17      last obs. used      2020-01-30      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .46574      source      ORB      producer      Otto Matic      solution date      2020-Feb-22 21:02:13   Additional Information  Earth MOID = 1.27952 au   Jupiter MOID = 2.22124 au   T_jup = 3.442  [ 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 14.2   n/a MPO412290   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 ] 2020-Jul-11 15:57 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin