+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   21404 Atluri (1998 FD61) Classification: Main-belt Asteroid          SPK-ID: 2021404 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 39 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1219166663657237 1.5756e-08   a 2.171172715833211 5.4158e-09 au q 1.906470576214611 3.4993e-08 au i 4.874493289576001 6.1079e-07 deg node 185.778183487217 6.6192e-06 deg peri 48.83798540379595 8.2372e-06 deg M 61.8905274818785 6.1733e-06 deg tp 2459195.608450116674 (2020-Dec-12.10845012) 1.9553e-05 TDB period 1168.530321205821 3.20 4.3722e-06 1.197e-08 d yr n .308079297102459 1.1527e-09 deg/d Q 2.435874855451811 6.0761e-09 au   Orbit Determination Parameters    # obs. used (total)      2455      data-arc span      9017 days (24.69 yr)      first obs. used      1996-10-18      last obs. used      2021-06-26      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .49083      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 05:07:33   Additional Information  Earth MOID = .900145 au   Jupiter MOID = 2.55288 au   T_jup = 3.674  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.4   n/a MPO502325   diameter diameter 3.483 km 0.169 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.210   0.061 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   21404 Atluri           Discovered 1998 Mar. 20 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Kamalakar Atluri (b. 1988) was awarded second place in the 2006 Intel International Science and Engineering Fair for his biochemistry team project. He attends the Herricks Senior High School, New Hyde Park, New York, U.S.A. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20060711/MPCPages.arc Last Updated: 2006-07-17 Alternate Designations  1998 FD61 = 1999 RO213  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jul-30 18:25 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin