+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2057088026158101 5.3124e-08   a 2.404929120307257 9.8814e-09 au q 1.910214030592957 1.3064e-07 au i 8.270517433684013 4.7263e-06 deg node 31.09784651577867 3.2401e-05 deg peri 179.851099588059 3.4255e-05 deg M 301.813996862454 1.301e-05 deg tp 2459420.674933456667 (2021-Jul-25.17493346) 4.9717e-05 TDB period 1362.234416703793 3.73 8.3957e-06 2.299e-08 d yr n .2642716962555492 1.6288e-09 deg/d Q 2.899644210021556 1.1914e-08 au   Orbit Determination Parameters    # obs. used (total)      680      data-arc span      9972 days (27.30 yr)      first obs. used      1993-11-21      last obs. used      2021-03-11      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .52488      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 20:01:56   Additional Information  Earth MOID = .903763 au   Jupiter MOID = 2.06296 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 ] 2021-Apr-17 12:56 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin