+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   17534 (1993 FB40) Classification: Main-belt Asteroid          SPK-ID: 2017534 [ 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 29 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1672442006633181 4.504e-08   a 2.970294800146522 1.4524e-08 au q 2.473530220561607 1.3825e-07 au i 1.692167957095426 3.4685e-06 deg node 83.51830432255046 0.000142 deg peri 266.3187754309242 0.00014234 deg M 29.97546282873861 1.1242e-05 deg tp 2459240.809843224615 (2021-Jan-26.30984322) 5.7876e-05 TDB period 1869.81121056796 5.12 1.3715e-05 3.755e-08 d yr n .1925328065022399 1.4122e-09 deg/d Q 3.467059379731437 1.6954e-08 au   Orbit Determination Parameters    # obs. used (total)      1532      data-arc span      11220 days (30.72 yr)      first obs. used      1990-10-13      last obs. used      2021-07-02      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .54289      source      ORB      producer      Otto Matic      solution date      2021-Jul-09 10:07:03   Additional Information  Earth MOID = 1.46733 au   Jupiter MOID = 1.96047 au   T_jup = 3.241  [ 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 14.2   n/a MPO473999   diameter diameter 8.911 km 0.141 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.045   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   17534 (1993 FB40)          Discovered 1993-Mar-19 by UESAC at La Silla Reference: 20001013/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1993 FB40 = 1990 TU7 = 1997 AV24 = 1998 FY44 = 1999 LF28  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Aug-02 08:27 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin