+ 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 34 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1435315789003615 3.8503e-08   a 3.136269740256449 1.6099e-08 au q 2.686115992580014 1.2066e-07 au i 12.28907787010106 3.3028e-06 deg node 102.460508750777 2.0333e-05 deg peri 278.3863673031474 2.4025e-05 deg M 22.21121506810445 1.1481e-05 deg tp 2459075.333428839119 (2020-Aug-13.83342884) 6.4965e-05 TDB period 2028.703314057945 5.55 1.562e-05 4.277e-08 d yr n .1774532517916109 1.3663e-09 deg/d Q 3.586423487932884 1.8409e-08 au   Orbit Determination Parameters    # obs. used (total)      2301      data-arc span      14802 days (40.53 yr)      first obs. used      1980-07-11      last obs. used      2021-01-19      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .46147      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 02:00:21   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-Feb-26 09:55 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin