+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   102752 (1999 VX121) Classification: Main-belt Asteroid          SPK-ID: 2102752 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1146655392899835 2.7225e-08   a 2.321675760553259 8.4623e-09 au q 2.055459557412938 6.1523e-08 au i 7.575209217449874 5.7525e-06 deg node 65.23580235096183 3.7188e-05 deg peri 233.9193275411131 4.9004e-05 deg M 88.27178778513172 3.1685e-05 deg tp 2458883.674448619796 (2020-Feb-04.17444862) 0.00011364 TDB period 1292.113837940019 3.54 7.0644e-06 1.934e-08 d yr n .2786132223256256 1.5233e-09 deg/d Q 2.587891963693582 9.4326e-09 au   Orbit Determination Parameters    # obs. used (total)      629      data-arc span      7758 days (21.24 yr)      first obs. used      1999-10-17      last obs. used      2021-01-12      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .58114      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 08:32:17   Additional Information  Earth MOID = 1.04815 au   Jupiter MOID = 2.5811 au   T_jup = 3.557  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 16.64   n/a E2021B55   102752 (1999 VX121)          Discovered 1999-Nov-04 by Spacewatch at Kitt Peak Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-04 20:29 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin