+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   100980 (1998 QJ27) Classification: Inner Main-belt Asteroid          SPK-ID: 2100980 [ 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 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1194739049510606 4.4486e-08   a 1.932834253503454 6.2176e-09 au q 1.701910997614228 8.4834e-08 au i 17.86160806116627 4.2704e-06 deg node 327.3441940347915 8.8209e-06 deg peri 357.0225627564295 1.5155e-05 deg M 127.8276194763798 1.431e-05 deg tp 2458851.992163871313 (2020-Jan-03.49216387) 3.7925e-05 TDB period 981.5000977117505 2.69 4.736e-06 1.297e-08 d yr n .36678549583367 1.7698e-09 deg/d Q 2.16375750939268 6.9604e-09 au   Orbit Determination Parameters    # obs. used (total)      1552      data-arc span      8193 days (22.43 yr)      first obs. used      1998-08-20      last obs. used      2021-01-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .39998      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 08:26:41   Additional Information  Earth MOID = .688407 au   Jupiter MOID = 3.16292 au   T_jup = 3.844  [ 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 15.78   n/a E2021B55   100980 (1998 QJ27)          Discovered 1998-Aug-24 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-02 09:38 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin