+ 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 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 38 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1436914432782856 1.2382e-08   a 3.137069972368855 1.3957e-08 au q 2.686299860374203 3.5562e-08 au i 12.28852970862095 5.9152e-07 deg node 102.4618140856198 3.6373e-06 deg peri 278.4497296438317 1.1002e-05 deg M 56.92005884841251 8.081e-06 deg tp 2459075.616360261215 (2020-Aug-14.11636026) 4.5367e-05 TDB period 2029.479811565308 5.56 1.3544e-05 3.708e-08 d yr n .1773853565571255 1.1838e-09 deg/d Q 3.587840084363508 1.5962e-08 au   Orbit Determination Parameters    # obs. used (total)      2444      data-arc span      14886 days (40.76 yr)      first obs. used      1980-07-11      last obs. used      2021-04-13      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .45967      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 16:33:14   Additional Information  Earth MOID = 1.72388 au   Jupiter MOID = 1.99174 au   T_jup = 3.160  [ 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 12.59   n/a MPCxxxxx   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-Aug-02 05:22 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin