+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11396 (1998 XZ77) Classification: Jupiter Trojan          SPK-ID: 2011396 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 36 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06483903571342192 5.7668e-08   a 5.213016980620726 8.0053e-08 au q 4.875009986439584 3.3282e-07 au i 12.57994616713627 5.6888e-06 deg node 195.6628968569673 1.6544e-05 deg peri 177.258506986756 3.7224e-05 deg M 359.824095308102 3.0822e-05 deg tp 2459202.624257004669 (2020-Dec-19.12425700) 0.00037219 TDB period 4347.425378081279 11.90 0.00010014 2.742e-07 d yr n .08280763180319033 1.9074e-09 deg/d Q 5.551023974801867 8.5243e-08 au   Orbit Determination Parameters    # obs. used (total)      2020      data-arc span      25302 days (69.27 yr)      first obs. used      1951-11-05      last obs. used      2021-02-12      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .43935      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 22:44:52   Additional Information  Earth MOID = 3.8742 au   Jupiter MOID = .0778125 au   T_jup = 2.948  [ 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 10.66   n/a MPCxxxxx   diameter diameter 37.109 km 0.843 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)   geometric albedo albedo 0.074   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)   11396 (1998 XZ77)          Discovered 1998-Dec-15 by LINEAR at Socorro Reference: 19990831/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1998 XZ77 = 1992 HU2  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-May-09 09:05 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin