+ 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 22 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .175032902859084 3.8624e-08   a 2.724651187984776 1.7291e-08 au q 2.247747581273349 1.0539e-07 au i 3.996852652708167 5.8695e-06 deg node 175.6008713593305 6.7754e-05 deg peri 284.3433880721122 7.0045e-05 deg M 152.0176219147013 1.7927e-05 deg tp 2458306.824704822558 (2018-Jul-07.32470482) 7.9709e-05 TDB period 1642.724725716347 4.50 1.5637e-05 4.281e-08 d yr n .2191480985001999 2.0861e-09 deg/d Q 3.201554794696204 2.0317e-08 au   Orbit Determination Parameters    # obs. used (total)      564      data-arc span      10868 days (29.75 yr)      first obs. used      1990-10-19      last obs. used      2020-07-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52514      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 21:59:53   Additional Information  Earth MOID = 1.2686 au   Jupiter MOID = 1.97559 au   T_jup = 3.331  [ hide covariance matrix ] Orbital Elements at Epoch 2456833.5 (2014-Jun-25.0) TDB Reference: JPL 22 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .176894207779781 3.8656e-08   q 2.241191832115217 1.0585e-07 au tp 2456666.513419023418 (2014-Jan-09.01341902) 7.6111e-05 TDB node 175.6582853485717 6.7769e-05 deg peri 284.2603745874346 6.9999e-05 deg i 3.997440899149406 5.872e-06 deg   Orbit Determination Parameters    # obs. used (total)      564      data-arc span      10868 days (29.75 yr)      first obs. used      1990-10-19      last obs. used      2020-07-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52514      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 21:59:53   Additional Information  Jupiter MOID = 1.97559 au   T_jup = 3.331  Orbit Covariance (6×6)   e q tp node peri i e 1.494265524177131E-15 -4.053020452169856E-15 -2.923903841861298E-13 -4.059378795439852E-15 -9.534427333068794E-14 -8.193937533519745E-16 q -4.053020452169856E-15 1.120352920166409E-14 8.623666830887556E-13 1.093945755924409E-14 2.779102161269908E-13 2.608915535506789E-15 tp -2.923903841861298E-13 8.623666830887556E-13 5.792943529762589E-9 -6.903412930962534E-12 1.35596691629812E-9 7.966579167441626E-14 node -4.059378795439852E-15 1.093945755924409E-14 -6.903412930962534E-12 4.592678245482851E-9 -4.582241744942942E-9 1.076774017052758E-10 peri -9.534427333068794E-14 2.779102161269908E-13 1.35596691629812E-9 -4.582241744942942E-9 4.899897421133163E-9 -1.073628256865992E-10 i -8.193937533519745E-16 2.608915535506789E-15 7.966579167441626E-14 1.076774017052758E-10 -1.073628256865992E-10 3.448004290741955E-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 ] 2021-Jan-25 22:30 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin