+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11394 (1998 XL77) Classification: Main-belt Asteroid          SPK-ID: 2011394 [ 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 36 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1435315669498764 1.2401e-08   a 3.136269733295255 1.3979e-08 au q 2.686116024097916 3.5617e-08 au i 12.28908371477547 5.9156e-07 deg node 102.4605205309632 3.6377e-06 deg peri 278.3863587422738 1.1009e-05 deg M 22.21121217602775 8.0685e-06 deg tp 2459075.333445553526 (2020-Aug-13.83344555) 4.5405e-05 TDB period 2028.703307303648 5.55 1.3563e-05 3.713e-08 d yr n .1774532523824178 1.1864e-09 deg/d Q 3.586423442492594 1.5985e-08 au   Orbit Determination Parameters    # obs. used (total)      2393      data-arc span      14852 days (40.66 yr)      first obs. used      1980-07-11      last obs. used      2021-03-10      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .45999      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 22:44:52   Additional Information  Earth MOID = 1.72315 au   Jupiter MOID = 1.99227 au   T_jup = 3.161  [ 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 12.58   n/a E2021B10   diameter diameter 17.397 km 0.093 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   geometric albedo albedo 0.047   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   11394 (1998 XL77)          Discovered 1998-Dec-15 by LINEAR at Socorro Reference: 19990831/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1998 XL77 = 1980 NA = 1994 BF5 = 1996 MY  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-16 16:53 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin