+ View the NASA Portal + Near-Earth Object (NEO) Project Search JPL JPL Small-Body Database Browser Search: [ help ]   21413 Albertsao (1998 FS68) Classification: Main-belt Asteroid          SPK-ID: 2021413 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2455200.5 (2010-Jan-04.0) TDB Reference: MPO135435 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1154703 n/a   a 2.2583909 n/a AU q 1.9976138 n/a AU i 3.13762 n/a deg node 249.96013 n/a deg peri 36.22297 n/a deg M 89.50582 n/a deg tp 2454892.2906070 (2009-Mar-01.79060700) n/a JED period 1239.6443213 3.39 n/a n/a d yr n 0.29040588 n/a deg/d Q 2.5191680 n/a AU   Orbit Determination Parameters    # obs. used (total)      636      first obs. used      1994-??-??      last obs. used      2008-03-10      # oppositions      9      planetary ephem.      DE403      quality code      0      fit RMS      0.52      data source      MPC:mpn      producer      MPC   Additional Information  T_jup = 3.611  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.5 mag n/a PDS3 (MPO 8740)   21413 Albertsao           Discovered 1998 Mar. 20 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Albert Tsao (b. 1987) is a finalist in the 2005 Intel Science Talent Search, a science competition for high school seniors, for his materials science project. He attends the Brookline High School, Brookline, Massachusetts. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20050224/MPCPages.arc Last Updated: 2005-02-28 Alternate Designations  1998 FS68 = 1994 BK4  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2009-Nov-23 19:03 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin