+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   20590 Bongiovanni (1999 RN172) Classification: Main-belt Asteroid          SPK-ID: 2020590 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 26 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06465778662837278 3.6741e-08   a 2.765696223886781 1.3169e-08 au q 2.586872427563814 1.0237e-07 au i 4.160989750998178 3.9409e-06 deg node 76.3861974458822 6.2407e-05 deg peri 354.5223678492454 7.2724e-05 deg M 146.7178747127513 3.6811e-05 deg tp 2458515.823111132787 (2019-Feb-01.32311113) 0.00017105 TDB period 1679.983986101012 4.60 1.1999e-05 3.285e-08 d yr n .2142877568943412 1.5305e-09 deg/d Q 2.944520020209749 1.4021e-08 au   Orbit Determination Parameters    # obs. used (total)      1145      data-arc span      10612 days (29.05 yr)      first obs. used      1992-01-29      last obs. used      2021-02-17      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .53127      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 03:24:39   Additional Information  Earth MOID = 1.60081 au   Jupiter MOID = 2.23308 au   T_jup = 3.333  [ 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 14.91   n/a E2021B10   diameter diameter 4.967 km 0.203 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.060   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   20590 Bongiovanni           Discovered 1999 Sept. 9 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Brice Bongiovanni (b. 1988) was awarded second place in the 2004 Intel International Science and Engineering Fair for his behavioral and social sciences team project. He attends the Central High School, Macon, Georgia, 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: 20041226/MPCPages.arc Last Updated: 2004-12-25 Alternate Designations  1999 RN172 = 1992 BN4 = 1995 YO4  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-14 15:21 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin