+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   30445 Stirling (2000 NJ2) Classification: Main-belt Asteroid          SPK-ID: 2030445 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO231624 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1504007 n/a   a 2.6980009 n/a AU q 2.2922197 n/a AU i 12.04907 n/a deg node 287.48986 n/a deg peri 287.17082 n/a deg M 22.36615 n/a deg tp 2456299.9342077 (2013-Jan-07.43420770) n/a JED period 1618.6820367 4.43 n/a n/a d yr n 0.22240316 n/a deg/d Q 3.1037821 n/a AU   Orbit Determination Parameters    # obs. used (total)      533      first obs. used      1996-??-??      last obs. used      2012-05-21      # oppositions      12      planetary ephem.      DE403      condition code      0      fit RMS      0.55      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.321  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.8 mag n/a PDS3 (MPO 16612)   30445 Stirling           Discovered 2000 July 5 by P. G. Comba at Prescott. James Stirling (1692-1770) was a Scottish mathematician best known for his derivation of an asymptotic formula for factorials. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20020328/MPCPages.arc Last Updated: 2003-10-02 Alternate Designations  2000 NJ2 = 1999 CH115  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-Jun-20 05:05 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin