+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   187594 (2006 WA128) Classification: Main-belt Asteroid          SPK-ID: 2187594 [ 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 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06285291212573911 8.7044e-08   a 2.633307543915409 3.0442e-08 au q 2.467796496257648 2.3944e-07 au i 2.081954264791448 8.8862e-06 deg node 354.82334089 0.00019726 deg peri 147.7510769576476 0.00020841 deg M 40.37965712473797 6.3345e-05 deg tp 2459025.430324012278 (2020-Jun-24.93032401) 0.00027431 TDB period 1560.812741942988 4.27 2.7066e-05 7.41e-08 d yr n .2306490652759866 3.9996e-09 deg/d Q 2.798818591573169 3.2356e-08 au   Orbit Determination Parameters    # obs. used (total)      165      data-arc span      5688 days (15.57 yr)      first obs. used      2004-05-21      last obs. used      2019-12-17      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .63492      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 21:56:03   Additional Information  Earth MOID = 1.48031 au   Jupiter MOID = 2.19444 au   T_jup = 3.395  [ 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 17.0   n/a MPO527410   187594 (2006 WA128)          Discovered 2006-Nov-24 by Nyukasa at Nyukasa Reference: 20080520/Numbers.arc Last Updated: 2008-05-22 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-22 21:45 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin