+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   4443 Paulet (1985 RD4) Classification: Main-belt Asteroid          SPK-ID: 2004443 [ 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 .1180113682038513 5.1824e-08   a 2.235795548318975 1.2453e-08 AU q 1.971946256637773 1.1685e-07 AU i 3.615989833982638 6.7791e-06 deg node 346.9783421416707 8.5276e-05 deg peri 84.95484427883075 9.2681e-05 deg M 23.68880744264991 3.3243e-05 deg tp 2456320.149745905879 (2013-Jan-27.64974591) 0.00011282 JED period 1221.086859011916 3.34 1.0202e-05 2.793e-08 d yr n .2948193221007278 2.4631e-09 deg/d Q 2.499644840000177 1.3922e-08 AU   Orbit Determination Parameters    # obs. used (total)      994      data-arc span      14732 days (40.33 yr)      first obs. used      1972-12-02      last obs. used      2013-04-03      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .51563      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 13:03:37   Additional Information  Earth MOID = .989656 AU   T_jup = 3.627  [ 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 13.5 mag n/a PDS3 (MPC 28111)   4443 Paulet           Discovered 1985 Sept. 10 by H. Debehogne at the European Southern Observatory. Peruvian scientist Pedro Paulet (1874-1945) built a liquid-fuel rocket engine in 1895 and a prototype of rocketry propulsion in 1900. The National Air & Space Museum in Washington, D.C., has a small plaque honoring Paulet's memory. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20120831/MPCPages.arc Last Updated: 2012-09-04 Alternate Designations  1985 RD4 = 1972 XO = 1977 FY2 = 1978 NE6 = 1980 DF6  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-21 00:57 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin