+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   134510 (1999 FT21) Classification: Outer Main-belt Asteroid          SPK-ID: 2134510 [ 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 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1178597291198569 5.0706e-08   a 3.204621539613999 2.824e-08 au q 2.826925713023434 1.6976e-07 au i 2.439398134363326 4.9837e-06 deg node 107.2474774182101 0.00013425 deg peri 133.6661095013251 0.0001369 deg M 243.3979102436422 3.1017e-05 deg tp 2459879.183641239776 (2022-Oct-26.68364124) 0.00018652 TDB period 2095.383636406889 5.74 2.7697e-05 7.583e-08 d yr n .1718062476699106 2.271e-09 deg/d Q 3.582317366204563 3.1568e-08 au   Orbit Determination Parameters    # obs. used (total)      426      data-arc span      8853 days (24.24 yr)      first obs. used      1996-11-18      last obs. used      2021-02-13      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .58041      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 18:08:42   Additional Information  Earth MOID = 1.81359 au   Jupiter MOID = 1.4268 au   T_jup = 3.181  [ 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 15.2   n/a MPO532638   diameter diameter 4.181 km 0.946 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.077   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   134510 (1999 FT21)          Discovered 1999-Mar-24 by Santangelo, M. M. M. at Monte Agliale Reference: 20060907/Numbers.arc Last Updated: 2006-09-10 [ show close-approach data ] Alternate Designations  1999 FT21 = 2004 BZ36  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-18 09:43 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin