+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   70147 (1999 NP25) Classification: Main-belt Asteroid          SPK-ID: 2070147 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2169045020396914 4.0145e-08   a 2.396351882587893 8.5234e-09 au q 1.876572370783289 9.4744e-08 au i 2.812836656841585 4.4123e-06 deg node 38.75147380808522 7.8166e-05 deg peri 268.3103003023273 7.8901e-05 deg M 218.4820275749814 1.2726e-05 deg tp 2459533.139548515638 (2021-Nov-14.63954852) 4.9461e-05 TDB period 1354.953255617241 3.71 7.229e-06 1.979e-08 d yr n .2656918225832109 1.4175e-09 deg/d Q 2.916131394392497 1.0372e-08 au   Orbit Determination Parameters    # obs. used (total)      914      data-arc span      10604 days (29.03 yr)      first obs. used      1991-04-09      last obs. used      2020-04-20      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .58901      source      ORB      producer      Otto Matic      solution date      2020-May-20 13:35:03   Additional Information  Earth MOID = .864358 au   Jupiter MOID = 2.34802 au   T_jup = 3.495  [ 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 15.7   n/a MPO459315   70147 (1999 NP25)          Discovered 1999-Jul-14 by LINEAR at Socorro Reference: 20031109/Numbers.arc Last Updated: 2004-04-19 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-23 22:00 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin