+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   308325 (2005 NS4) Classification: Main-belt Asteroid          SPK-ID: 2308325 [ 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 .1153868299764896 4.4066e-08   a 2.9377095028479 3.1181e-08 au q 2.598736515922471 1.3705e-07 au i 11.34232222850583 5.8984e-06 deg node 123.5116743661482 2.3772e-05 deg peri 260.6386256422068 3.6243e-05 deg M 315.7891744286964 3.0878e-05 deg tp 2459426.359219516373 (2021-Jul-30.85921952) 0.00015951 TDB period 1839.126910099379 5.04 2.9281e-05 8.017e-08 d yr n .1957450559953729 3.1165e-09 deg/d Q 3.276682489773328 3.4779e-08 au   Orbit Determination Parameters    # obs. used (total)      234      data-arc span      6765 days (18.52 yr)      first obs. used      2001-12-19      last obs. used      2020-06-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .61957      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 19:01:42   Additional Information  Earth MOID = 1.63024 au   Jupiter MOID = 2.24182 au   T_jup = 3.235  [ hide covariance matrix ] Orbital Elements at Epoch 2457442.5 (2016-Feb-24.0) TDB Reference: JPL 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1190103895731631 4.4001e-08   q 2.586268628566958 1.3696e-07 au tp 2457590.141325779411 (2016-Jul-20.64132578) 0.00014313 TDB node 123.6028118036541 2.3846e-05 deg peri 261.0092310953345 3.5668e-05 deg i 11.32864792218393 5.8927e-06 deg   Orbit Determination Parameters    # obs. used (total)      234      data-arc span      6765 days (18.52 yr)      first obs. used      2001-12-19      last obs. used      2020-06-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .61957      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 19:01:42   Additional Information  Jupiter MOID = 2.24182 au   T_jup = 3.235  Orbit Covariance (6×6)   e q tp node peri i e 1.936110349615726E-15 -5.915711989202354E-15 -1.171012451729905E-12 -1.320866691643938E-14 -1.486627257540795E-13 6.949839579787938E-16 q -5.915711989202354E-15 1.875776921185742E-14 4.701691337027525E-12 4.421617948171924E-14 6.482599071307596E-13 -4.743598622730256E-16 tp -1.171012451729905E-12 4.701691337027525E-12 2.04858306291519E-8 6.077239994760625E-11 3.814673497688751E-9 -1.383248836455067E-12 node -1.320866691643938E-14 4.421617948171924E-14 6.077239994760625E-11 5.686176122308442E-10 -5.456506681281008E-10 -9.83382085528446E-12 peri -1.486627257540795E-13 6.482599071307596E-13 3.814673497688751E-9 -5.456506681281008E-10 1.272180493961058E-9 9.405232811751248E-12 i 6.949839579787938E-16 -4.743598622730256E-16 -1.383248836455067E-12 -9.83382085528446E-12 9.405232811751248E-12 3.472404529717927E-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 16.21   n/a E2021B25   308325 (2005 NS4)          Discovered 2005-Jul-03 by Mt. Lemmon Survey at Mount Lemmon Reference: 20111210/Numbers.arc Last Updated: 2011-12-12 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-07 00:03 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin