+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   25399 Vonnegut (1999 VN20) Classification: Main-belt Asteroid          SPK-ID: 2025399 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 1 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08828252793193575 1.706e-07   a 2.584033921735405 3.1575e-08 AU q 2.35590887486273 4.5156e-07 AU i 22.49403809984802 1.109e-05 deg node .4754148440606222 1.97e-05 deg peri 166.8026109705169 4.9991e-05 deg M 326.5420868571652 5.3641e-05 deg tp 2456541.507460545901 (2013-Sep-06.00746055) 0.00022738 JED period 1517.210161309641 4.15 2.7809e-05 7.614e-08 d yr n .2372776093782891 4.3491e-09 deg/d Q 2.812158968608081 3.4363e-08 AU   Orbit Determination Parameters    # obs. used (total)      786      data-arc span      7338 days (20.09 yr)      first obs. used      1993-03-20      last obs. used      2013-04-22      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .50618      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 14:41:02   Additional Information  Earth MOID = 1.36359 AU   T_jup = 3.311  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.0 mag n/a PDS3 (MPO 12616)   25399 Vonnegut           Discovered 1999 Nov. 11 by C. W. Juels at Fountain Hills. Kurt Vonnegut (b. 1922) is a revolutionary U.S. science-fiction writer who crossed over into mainstream literature and is often referred to as the "Mark Twain of the second half of the twentieth century". He is most famous for his novel Slaughterhouse 5. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20020724/MPCPages.arc Last Updated: 2003-10-02 Alternate Designations  1999 VN20 = 2000 XC50  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-25 19:48 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin