+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   24855 (1995 YM4) Classification: Main-belt Asteroid          SPK-ID: 2024855 [ 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 .2767083859636958 7.0604e-08   a 2.576919541361175 2.6131e-08 AU q 1.863864294312817 1.8389e-07 AU i 5.032888845727546 6.2621e-06 deg node 102.1379304771538 0.0001232 deg peri 321.170229653071 0.00012532 deg M 81.81754861672852 2.945e-05 deg tp 2456057.105229072223 (2012-May-09.60522907) 0.00011936 JED period 1510.948685508819 4.14 2.2983e-05 6.292e-08 d yr n .2382609041939557 3.6241e-09 deg/d Q 3.289974788409533 3.3362e-08 AU   Orbit Determination Parameters    # obs. used (total)      587      data-arc span      7743 days (21.20 yr)      first obs. used      1992-01-30      last obs. used      2013-04-12      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .57163      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 14:39:35   Additional Information  Earth MOID = .879691 AU   T_jup = 3.367  [ 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 14.7 mag n/a PDS3 (MPO 12429)   24855 (1995 YM4)          Discovered 1995-Dec-22 by Shimizu, Y., Urata, T. at Nachi-Katsuura (905) Reference: 20010606/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1995 YM4 = 1999 XO3  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-18 15:38 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin