+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   117884 (2684 P-L) Classification: Main-belt Asteroid          SPK-ID: 2117884 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05908177294230679 6.8875e-08   a 2.576373933390463 1.5871e-08 au q 2.42415719364341 1.7345e-07 au i 6.530575547523902 6.6319e-06 deg node 182.9747443852621 3.3804e-05 deg peri 237.8652110965694 9.3299e-05 deg M 106.0922727333463 7.952e-05 deg tp 2458555.363687359003 (2019-Mar-12.86368736) 0.00033507 TDB period 1510.4688439801 4.14 1.3957e-05 3.821e-08 d yr n .2383365942533422 2.2023e-09 deg/d Q 2.728590673137516 1.6808e-08 au   Orbit Determination Parameters    # obs. used (total)      567      data-arc span      21760 days (59.58 yr)      first obs. used      1960-09-24      last obs. used      2020-04-22      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56436      source      ORB      producer      Otto Matic      solution date      2020-May-20 20:15:21   Additional Information  Earth MOID = 1.44302 au   Jupiter MOID = 2.45708 au   T_jup = 3.415  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 16.0   n/a MPO459556   117884 (2684 P-L)          Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  2684 P-L = 2004 GT60  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-13 04:08 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin