+ 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 30 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1434035665577292 3.9618e-08   a 3.135773243314653 1.6784e-08 au q 2.686092176307034 1.251e-07 au i 12.28917398179 3.5874e-06 deg node 102.459303900966 2.2081e-05 deg peri 278.3404649797571 2.5754e-05 deg M 346.7524026409548 1.2656e-05 deg tp 2459075.136286157836 (2020-Aug-13.63628616) 7.1224e-05 TDB period 2028.221592836634 5.55 1.6284e-05 4.458e-08 d yr n .1774953985656521 1.4251e-09 deg/d Q 3.585454310322272 1.9191e-08 au   Orbit Determination Parameters    # obs. used (total)      2055      data-arc span      14721 days (40.30 yr)      first obs. used      1980-07-11      last obs. used      2020-10-30      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .48107      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 02:59:50   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-Dec-03 23:50 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin