+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   120997 (1998 XT96) Classification: Main-belt Asteroid          SPK-ID: 2120997 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .18161984064026 4.6182e-08   a 2.321822654956009 9.1897e-09 au q 1.900133594367953 1.0861e-07 au i 3.34716050353983 4.474e-06 deg node 111.4689761424056 7.6389e-05 deg peri 316.5803216750379 7.7772e-05 deg M 105.8367088192723 1.1369e-05 deg tp 2458820.594291783078 (2019-Dec-03.09429178) 4.128e-05 TDB period 1292.236469594257 3.54 7.6719e-06 2.1e-08 d yr n .278586782272934 1.6539e-09 deg/d Q 2.743511715544064 1.0859e-08 au   Orbit Determination Parameters    # obs. used (total)      378      data-arc span      7735 days (21.18 yr)      first obs. used      1998-12-11      last obs. used      2020-02-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53459      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 17:53:18   Additional Information  Earth MOID = .915375 au   Jupiter MOID = 2.54716 au   T_jup = 3.553  [ 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 17.13   n/a E2021B55   120997 (1998 XT96)          Discovered 1998-Dec-11 by Naranjo, O. A. at Merida Reference: 20060314/Numbers.arc Last Updated: 2006-03-23 [ show close-approach data ] Alternate Designations  1998 XT96 = 2001 UU18  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-07 07:38 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin