+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 29 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1434035653028873 4.3727e-08   a 3.13577324466699 1.9703e-08 au q 2.68609218140034 1.4184e-07 au i 12.2891763477309 4.199e-06 deg node 102.4593120806564 2.3349e-05 deg peri 278.340458230131 2.8181e-05 deg M 346.7524009277333 1.723e-05 deg tp 2459075.136295858320 (2020-Aug-13.63629586) 9.7261e-05 TDB period 2028.221594148673 5.55 1.9116e-05 5.234e-08 d yr n .1774953984508318 1.6729e-09 deg/d Q 3.585454307933639 2.2529e-08 au   Orbit Determination Parameters    # obs. used (total)      1845      data-arc span      14633 days (40.06 yr)      first obs. used      1980-07-11      last obs. used      2020-08-03      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .50265      source      ORB      producer      Otto Matic      solution date      2020-Aug-25 00:24:17   Additional Information  Earth MOID = 1.72437 au   Jupiter MOID = 1.99245 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 12.5   n/a MPO452331   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 ] 2020-Oct-23 21:34 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin