+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   49618 (1999 FC44) Classification: Main-belt Asteroid          SPK-ID: 2049618 [ 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 .08112826821541265 4.2117e-08   a 3.071026770116287 2.0162e-08 au q 2.821879686613581 1.3046e-07 au i 11.78654479191914 5.1182e-06 deg node 354.1892096565315 2.2007e-05 deg peri 102.1275387958276 4.888e-05 deg M 41.9106689060396 3.9131e-05 deg tp 2458771.652632087321 (2019-Oct-15.15263209) 0.00021435 TDB period 1965.72983917926 5.38 1.9358e-05 5.3e-08 d yr n .1831380858268442 1.8035e-09 deg/d Q 3.320173853618993 2.1797e-08 au   Orbit Determination Parameters    # obs. used (total)      1192      data-arc span      8672 days (23.74 yr)      first obs. used      1996-09-11      last obs. used      2020-06-09      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5348      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 23:31:44   Additional Information  Earth MOID = 1.86838 au   Jupiter MOID = 1.82656 au   T_jup = 3.193  [ 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 14.0   n/a MPO337654   diameter diameter 6.187 km 0.270 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.139   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   49618 (1999 FC44)          Discovered 1999-Mar-20 by LINEAR at Socorro Reference: 20021120/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1999 FC44 = 2001 PL19  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-23 12:00 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin