+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   160042 (1999 NW64) Classification: Main-belt Asteroid          SPK-ID: 2160042 [ 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 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .275001582597007 5.7947e-08   a 2.622296775424166 2.2338e-08 au q 1.901161012143492 1.567e-07 au i 14.16375435124584 4.6609e-06 deg node 120.1931364557639 2.4517e-05 deg peri 247.4413651099696 2.5417e-05 deg M 341.5937584615199 1.1285e-05 deg tp 2459279.801938630185 (2021-Mar-06.30193863) 4.9345e-05 TDB period 1551.033536487208 4.25 1.9819e-05 5.426e-08 d yr n .2321032985626671 2.9657e-09 deg/d Q 3.34343253870484 2.8481e-08 au   Orbit Determination Parameters    # obs. used (total)      409      data-arc span      7676 days (21.02 yr)      first obs. used      1999-07-14      last obs. used      2020-07-19      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5706      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 12:31:13   Additional Information  Earth MOID = .946556 au   Jupiter MOID = 2.26659 au   T_jup = 3.308  [ 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 15.58   n/a E2021B55   160042 (1999 NW64)          Discovered 1999-Jul-14 by LINEAR at Socorro Reference: 20070730/Numbers.arc Last Updated: 2007-08-06 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-13 15:12 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin