+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   26112 (1991 PG18) Classification: Outer Main-belt Asteroid          SPK-ID: 2026112 [ 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 .2347880048326194 1.0109e-07   a 3.252054773428751 6.016e-08 AU q 2.488511321569019 3.2036e-07 AU i 2.069657143609317 7.2626e-06 deg node 281.7498221758362 0.00029365 deg peri 46.54657700428576 0.00029415 deg M 258.7581193137581 3.4826e-05 deg tp 2457002.911019764872 (2014-Dec-11.41101976) 0.00021951 JED period 2142.077622870795 5.86 5.944e-05 1.627e-07 d yr n .1680611366069596 4.6635e-09 deg/d Q 4.015598225288485 7.4285e-08 AU   Orbit Determination Parameters    # obs. used (total)      555      data-arc span      7923 days (21.69 yr)      first obs. used      1991-08-08      last obs. used      2013-04-17      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .54041      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 14:42:57   Additional Information  Earth MOID = 1.47756 AU   T_jup = 3.136  [ 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 13.6 mag n/a PDS3 (MPO 13892)   26112 (1991 PG18)          Discovered 1991-Aug-08 by Holt, H. E. at Palomar (675) Reference: 20010705/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1991 PG18 = 2000 CY25  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-Jun-18 07:37 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin