+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   101810 (1999 JA6) Classification: Outer Main-belt Asteroid          SPK-ID: 2101810 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO253942 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1668957 n/a   a 3.2212958 n/a AU q 2.6836754 n/a AU i 26.28114 n/a deg node 117.77546 n/a deg peri 117.97957 n/a deg M 147.81047 n/a deg tp 2455533.4442026 (2010-Dec-02.94420260) n/a JED period 2111.7589779 5.78 n/a n/a d yr n 0.17047400 n/a deg/d Q 3.7589162 n/a AU   Orbit Determination Parameters    # obs. used (total)      195      first obs. used      1977-??-??      last obs. used      2012-10-13      # oppositions      12      planetary ephem.      DE403      condition code      0      fit RMS      0.51      data source      MPC:mpu      producer      MPCLINUX   Additional Information  T_jup = 3.006  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.0 mag n/a MPO253942   101810 (1999 JA6)          Discovered 1999-May-08 by Beijing Schmidt CCD Asteroid Program at Xinglong (327) Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-24 13:36 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin