+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   45113 (1999 XZ78) Classification: Main-belt Asteroid          SPK-ID: 2045113 [ 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 28 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1306750165765495 3.3273e-08   a 2.602774936652035 1.2661e-08 au q 2.262657278660003 8.4601e-08 au i 4.915194699463834 3.8871e-06 deg node 80.15572297455199 5.3048e-05 deg peri 198.6462060058243 5.6077e-05 deg M 150.3066561691329 1.8507e-05 deg tp 2458560.132822889529 (2019-Mar-17.63282289) 7.8237e-05 TDB period 1533.745674578528 4.20 1.1191e-05 3.064e-08 d yr n .2347194883525443 1.7127e-09 deg/d Q 2.942892594644068 1.4315e-08 au   Orbit Determination Parameters    # obs. used (total)      861      data-arc span      8204 days (22.46 yr)      first obs. used      1998-08-17      last obs. used      2021-02-01      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .57225      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 09:35:03   Additional Information  Earth MOID = 1.24501 au   Jupiter MOID = 2.16963 au   T_jup = 3.396  [ 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 15.3   n/a MPO502456   diameter diameter 2.011 km 0.183 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   geometric albedo albedo 0.363   0.106 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   45113 (1999 XZ78)          Discovered 1999-Dec-07 by LINEAR at Socorro Reference: 20020822/Numbers.arc Last Updated: 2004-04-19 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 2072-Jul-29 05:42 00:01 Hebe 0.0131708814198172 0.0131609853078202 0.0131807796492951 6.08812967931594 6.0881296017879 2478052.737373624 1.4343311161211 559.906914460231 50.5421637389051 28.3360285431219 18754.000396112 T 28 CATAB v2.0f-lin.ifort 2021-Apr-13 09:35:06 2021-Apr-13 09:35 Alternate Designations  1999 XZ78 = 2001 DD33  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-23 12:53 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin