+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   187386 (2005 UD455) Classification: Main-belt Asteroid          SPK-ID: 2187386 [ 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 .06357045970815871 3.7346e-08   a 2.763341191752411 1.9184e-08 au q 2.587674321862219 1.0586e-07 au i 5.018391196354469 4.4604e-06 deg node 82.03403190031 6.2472e-05 deg peri 197.1657895645326 8.157e-05 deg M 212.0969814965704 5.488e-05 deg tp 2459889.826111682705 (2022-Nov-06.32611168) 0.00025818 TDB period 1677.838645328388 4.59 1.7472e-05 4.784e-08 d yr n .2145617524082839 2.2344e-09 deg/d Q 2.939008061642603 2.0404e-08 au   Orbit Determination Parameters    # obs. used (total)      285      data-arc span      7963 days (21.80 yr)      first obs. used      1999-05-23      last obs. used      2021-03-11      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .54326      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 21:55:11   Additional Information  Earth MOID = 1.56988 au   Jupiter MOID = 2.13058 au   T_jup = 3.332  [ 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 16.3   n/a MPO454290   187386 (2005 UD455)          Discovered 2005-Oct-28 by Spacewatch at Kitt Peak Reference: 20080520/Numbers.arc Last Updated: 2008-05-22 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-15 09:06 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin