+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   160577 (1999 JL48) Classification: Main-belt Asteroid          SPK-ID: 2160577 [ 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 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2058262398177151 5.9392e-08   a 2.404804923930183 1.6044e-08 au q 1.909832968942507 1.4137e-07 au i 8.270910923616031 6.8373e-06 deg node 31.1053613479186 3.3263e-05 deg peri 179.8588874516831 3.5868e-05 deg M 248.9551483696214 1.8683e-05 deg tp 2459420.659447175762 (2021-Jul-25.15944718) 7.3729e-05 TDB period 1362.128894428589 3.73 1.3631e-05 3.732e-08 d yr n .2642921690248847 2.6448e-09 deg/d Q 2.899776878917858 1.9346e-08 au   Orbit Determination Parameters    # obs. used (total)      505      data-arc span      9561 days (26.18 yr)      first obs. used      1993-11-21      last obs. used      2020-01-25      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57662      source      ORB      producer      Otto Matic      solution date      2020-Feb-24 13:22:04   Additional Information  Earth MOID = .904325 au   Jupiter MOID = 2.06398 au   T_jup = 3.480  [ 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 15.8   n/a MPO454063   diameter diameter 3.301 km 0.080 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.074   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   160577 (1999 JL48)          Discovered 1999-May-10 by LINEAR at Socorro Reference: 20070828/Numbers.arc Last Updated: 2007-08-30 [ show close-approach data ] Alternate Designations  1999 JL48 = 2004 TE319  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Jul-12 13:59 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin