+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   70621 (1999 TC214) Classification: Main-belt Asteroid          SPK-ID: 2070621 [ 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 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1750329033731613 3.8627e-08   a 2.72465118954953 1.7457e-08 au q 2.247747581163539 1.0539e-07 au i 3.996852288841009 6.125e-06 deg node 175.6008705809662 6.8026e-05 deg peri 284.3433856600412 7.0509e-05 deg M 152.0176241046262 1.832e-05 deg tp 2458306.824694232097 (2018-Jul-07.32469423) 8.1748e-05 TDB period 1642.724727131461 4.50 1.5788e-05 4.323e-08 d yr n .2191480983114164 2.1062e-09 deg/d Q 3.201554797935522 2.0513e-08 au   Orbit Determination Parameters    # obs. used (total)      560      data-arc span      10448 days (28.61 yr)      first obs. used      1990-10-19      last obs. used      2019-05-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52639      source      ORB      producer      Otto Matic      solution date      2020-Feb-23 16:13:11   Additional Information  Earth MOID = 1.2686 au   Jupiter MOID = 1.97559 au   T_jup = 3.331  [ hide covariance matrix ] Orbital Elements at Epoch 2456756.5 (2014-Apr-09.0) TDB Reference: JPL 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1769994340643628 3.8648e-08   q 2.241382232439143 1.0586e-07 au tp 2456666.702656467526 (2014-Jan-09.20265647) 7.8712e-05 TDB node 175.6654455973078 6.8057e-05 deg peri 284.3130525115321 7.047e-05 deg i 3.996768823518607 6.1267e-06 deg   Orbit Determination Parameters    # obs. used (total)      560      data-arc span      10448 days (28.61 yr)      first obs. used      1990-10-19      last obs. used      2019-05-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52639      source      ORB      producer      Otto Matic      solution date      2020-Feb-23 16:13:11   Additional Information  Jupiter MOID = 1.97559 au   T_jup = 3.331  Orbit Covariance (6×6)   e q tp node peri i e 1.493635322578191E-15 -4.05169721809278E-15 -3.007382576586518E-13 -5.004034314035447E-15 -9.655234479497067E-14 -1.077762934201867E-15 q -4.05169721809278E-15 1.120606420547242E-14 8.37872955678916E-13 1.299526357799772E-14 2.694986286544474E-13 3.228557289841915E-15 tp -3.007382576586518E-13 8.37872955678916E-13 6.195527859665836E-9 -5.931525407813878E-12 1.460721586483949E-9 2.88594821810561E-13 node -5.004034314035447E-15 1.299526357799772E-14 -5.931525407813878E-12 4.631715635870723E-9 -4.620948903832862E-9 1.183418360253412E-10 peri -9.655234479497067E-14 2.694986286544474E-13 1.460721586483949E-9 -4.620948903832862E-9 4.96604449805863E-9 -1.179460036496953E-10 i -1.077762934201867E-15 3.228557289841915E-15 2.88594821810561E-13 1.183418360253412E-10 -1.179460036496953E-10 3.753703711658239E-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 15.5   n/a MPO436275   70621 (1999 TC214)          Discovered 1999-Oct-15 by LINEAR at Socorro Reference: 20031109/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-29 13:13 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin