+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   120943 (1998 TN22) Classification: Outer Main-belt Asteroid          SPK-ID: 2120943 [ 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 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09128176457235754 4.0021e-08   a 3.211695973627813 2.9655e-08 au q 2.91852669788513 1.4067e-07 au i 3.617000595149824 4.3589e-06 deg node 209.3512742274935 7.2708e-05 deg peri 247.2631756494644 7.9259e-05 deg M 249.8387560069405 3.5557e-05 deg tp 2459843.819030126088 (2022-Sep-21.31903013) 0.00021179 TDB period 2102.326030922301 5.76 2.9118e-05 7.972e-08 d yr n .1712389014381686 2.3717e-09 deg/d Q 3.504865249370495 3.2362e-08 au   Orbit Determination Parameters    # obs. used (total)      543      data-arc span      8087 days (22.14 yr)      first obs. used      1998-10-13      last obs. used      2020-12-03      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .52375      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 17:08:52   Additional Information  Earth MOID = 1.93761 au   Jupiter MOID = 1.6608 au   T_jup = 3.182  [ hide covariance matrix ] Orbital Elements at Epoch 2457210.5 (2015-Jul-07.0) TDB Reference: JPL 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09019665249373372 3.9061e-08   q 2.923834718611459 1.378e-07 au tp 2457707.842544281396 (2016-Nov-15.34254428) 0.0002022 TDB node 209.9018873311409 7.2124e-05 deg peri 241.8363824534166 7.9145e-05 deg i 3.628474084951305 4.3731e-06 deg   Orbit Determination Parameters    # obs. used (total)      543      data-arc span      8087 days (22.14 yr)      first obs. used      1998-10-13      last obs. used      2020-12-03      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .52375      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 17:08:52   Additional Information  Jupiter MOID = 1.6608 au   T_jup = 3.182  Orbit Covariance (6×6)   e q tp node peri i e 1.525784211514097E-15 -5.294609323660571E-15 -7.308068874726274E-13 -3.28356306893093E-15 -4.594895580752315E-14 6.834880754082195E-16 q -5.294609323660571E-15 1.898943283823591E-14 4.679189225809333E-12 6.475039058580826E-15 4.824814456073648E-13 -9.283099875963478E-16 tp -7.308068874726274E-13 4.679189225809333E-12 4.088462720168305E-8 -3.89178156617862E-11 6.612448111232291E-9 4.644200059921151E-12 node -3.28356306893093E-15 6.475039058580826E-15 -3.89178156617862E-11 5.201837830974979E-9 -5.19736340997142E-9 -9.003158671020679E-11 peri -4.594895580752315E-14 4.824814456073648E-13 6.612448111232291E-9 -5.19736340997142E-9 6.26390558523063E-9 9.059881076227154E-11 i 6.834880754082195E-16 -9.283099875963478E-16 4.644200059921151E-12 -9.003158671020679E-11 9.059881076227154E-11 1.912385880386839E-11 [ 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 15.12   n/a E2021B55   120943 (1998 TN22)          Discovered 1998-Oct-13 by Spacewatch at Kitt Peak Reference: 20060314/Numbers.arc Last Updated: 2006-03-23 [ show close-approach data ] Alternate Designations  1998 TN22 = 2000 CD35  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-22 21:26 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin