+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   5644 Maureenbell (1990 QG2) Classification: Main-belt Asteroid          SPK-ID: 2005644 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO247418 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1093289 n/a   a 3.1248432 n/a AU q 2.7832075 n/a AU i 14.31008 n/a deg node 166.09568 n/a deg peri 264.69510 n/a deg M 319.45403 n/a deg tp 2456627.7406261 (2013-Dec-01.24062610) n/a JED period 2017.6265460 5.52 n/a n/a d yr n 0.17842747 n/a deg/d Q 3.4664789 n/a AU   Orbit Determination Parameters    # obs. used (total)      988      first obs. used      1951-??-??      last obs. used      2012-12-08      # oppositions      19      planetary ephem.      DE403      condition code      0      fit RMS      0.55      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.158  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 11.8 mag n/a PDS3 (MPC 22479)   5644 Maureenbell           Discovered 1990 Aug. 22 by H. E. Holt at Palomar. Maureen E. Ockert-Bell (b. 1961), an image-processing specialist at Cornell University, has published results on the physical and optical properties of the Saturnian, Uranian and Jovian ring systems, on the physical and radiative properties of dust in Mars' atmosphere, and on clouds in Earth's atmosphere. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 19990928/MPCPages.arc Last Updated: 2010-06-11 Alternate Designations  1990 QG2 = 1979 SZ12  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-25 06:06 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin