+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   10303 Freret (1989 RD2) Classification: Main-belt Asteroid          SPK-ID: 2010303 [ 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 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2436332000137005 2.7827e-08   a 2.378052881804877 7.3893e-09 au q 1.798680248408953 6.6905e-08 au i 2.834470067605198 3.3712e-06 deg node 166.7669368818892 7.569e-05 deg peri 166.5204065489235 7.6121e-05 deg M 192.5745089468146 1.0046e-05 deg tp 2459823.445093380508 (2022-Aug-31.94509338) 3.8788e-05 TDB period 1339.462899026188 3.67 6.2431e-06 1.709e-08 d yr n .2687644430179634 1.2527e-09 deg/d Q 2.957425515200801 9.1896e-09 au   Orbit Determination Parameters    # obs. used (total)      1798      data-arc span      15501 days (42.44 yr)      first obs. used      1978-08-09      last obs. used      2021-01-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51382      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 01:54:05   Additional Information  Earth MOID = .786774 au   Jupiter MOID = 2.4233 au   T_jup = 3.498  [ 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 14.33   n/a E2021B10   diameter diameter 3.423 km 0.533 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.345   0.100 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   10303 Fréret           Discovered 1989 Sept. 2 by E. W. Elst at Haute Provence. The famous French historian Nicolas Fréret (1688-1749), well known for his atheistic treatise Lettre de Thrasybule à Leucippe (1720), was imprisoned in the Bastille for alleging---correctly---that the Franks were evolved from German tribes. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 19991123/MPCPages.arc Last Updated: 2010-06-11 [ show close-approach data ] Alternate Designations  1989 RD2 = 1978 PD4 = 1978 QC1 = 1982 VU4 = 1982 XE2 = 1982 XL2  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Feb-28 19:30 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin