+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   19107 (1981 EU19) Classification: Main-belt Asteroid          SPK-ID: 2019107 [ 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 33 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1399570485408822 2.5983e-08   a 2.3144318110571 6.5597e-09 au q 1.99051076573242 6.1576e-08 au i 5.395680049727557 3.4867e-06 deg node 345.7496598122959 3.2982e-05 deg peri 289.1151557576417 3.6144e-05 deg M 21.88930120063152 1.3412e-05 deg tp 2459122.302222805109 (2020-Sep-29.80222281) 4.7962e-05 TDB period 1286.071196706297 3.52 5.4676e-06 1.497e-08 d yr n .2799222942882019 1.1901e-09 deg/d Q 2.638352856381781 7.4778e-09 au   Orbit Determination Parameters    # obs. used (total)      1980      data-arc span      14446 days (39.55 yr)      first obs. used      1981-02-02      last obs. used      2020-08-22      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .51226      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 02:45:59   Additional Information  Earth MOID = .980389 au   Jupiter MOID = 2.48799 au   T_jup = 3.563  [ 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 14.68   n/a E2021B10   diameter diameter 3.056 km 0.160 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.249   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   19107 (1981 EU19)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring Reference: 20001211/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1981 EU19 = 1995 DZ12  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-18 13:16 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin