+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   102570 (1999 UW35) Classification: Main-belt Asteroid          SPK-ID: 2102570 [ 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 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1086553512946997 3.3042e-08   a 2.286926860066479 8.1436e-09 au q 2.038440018700671 7.4661e-08 au i 7.131082374427455 6.0064e-06 deg node 2.306352898950568 2.8349e-05 deg peri 267.7559161904337 3.9489e-05 deg M 124.2725699558573 2.7692e-05 deg tp 2458764.436618013933 (2019-Oct-07.93661801) 9.7057e-05 TDB period 1263.213737116291 3.46 6.7473e-06 1.847e-08 d yr n .284987401120115 1.5222e-09 deg/d Q 2.535413701432287 9.0284e-09 au   Orbit Determination Parameters    # obs. used (total)      564      data-arc span      10919 days (29.89 yr)      first obs. used      1991-02-17      last obs. used      2021-01-09      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .58947      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 08:31:48   Additional Information  Earth MOID = 1.03609 au   Jupiter MOID = 2.56252 au   T_jup = 3.583  [ 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 16.5   n/a MPO432552   102570 (1999 UW35)          Discovered 1999-Oct-31 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-08 20:24 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin