+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   70632 (1999 TN220) Classification: Main-belt Asteroid          SPK-ID: 2070632 [ 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 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1814799209130951 3.8165e-08   a 2.637446380928559 1.2838e-08 au q 2.158802820305115 1.0273e-07 au i 10.6572454326882 7.191e-06 deg node 347.4670513067155 2.0734e-05 deg peri 297.4506880270291 3.0379e-05 deg M 9.041513644217551 1.9653e-05 deg tp 2458961.207240780069 (2020-Apr-21.70724078) 8.545e-05 TDB period 1564.493941589296 4.28 1.1423e-05 3.127e-08 d yr n .2301063560746633 1.6802e-09 deg/d Q 3.116089941552003 1.5168e-08 au   Orbit Determination Parameters    # obs. used (total)      765      data-arc span      7635 days (20.90 yr)      first obs. used      1999-09-05      last obs. used      2020-07-31      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53908      source      ORB      producer      Otto Matic      solution date      2020-Aug-25 06:28:38   Additional Information  Earth MOID = 1.16708 au   Jupiter MOID = 2.17511 au   T_jup = 3.349  [ hide covariance matrix ] Orbital Elements at Epoch 2457224.5 (2015-Jul-21.0) TDB Reference: JPL 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1802364552216126 3.8238e-08   q 2.161449814222482 1.0279e-07 au tp 2457397.875932672552 (2016-Jan-10.37593267) 8.8636e-05 TDB node 347.5180135545892 2.0735e-05 deg peri 297.5627885648892 3.0477e-05 deg i 10.65637239863782 7.1908e-06 deg   Orbit Determination Parameters    # obs. used (total)      765      data-arc span      7635 days (20.90 yr)      first obs. used      1999-09-05      last obs. used      2020-07-31      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53908      source      ORB      producer      Otto Matic      solution date      2020-Aug-25 06:28:38   Additional Information  Jupiter MOID = 2.17511 au   T_jup = 3.349  Orbit Covariance (6×6)   e q tp node peri i e 1.462144354642225E-15 -3.910268444319567E-15 1.641674272961561E-12 -2.42094897311678E-14 4.112153596420614E-13 -7.202967645345098E-15 q -3.910268444319567E-15 1.056522761119121E-14 -4.594617819460235E-12 6.537420475900175E-14 -1.153081303703126E-12 1.937033460898956E-14 tp 1.641674272961561E-12 -4.594617819460235E-12 7.856287297302E-9 -6.929990922517847E-11 1.991801143617519E-9 -2.518369021538059E-11 node -2.42094897311678E-14 6.537420475900175E-14 -6.929990922517847E-11 4.29958757370512E-10 -4.382146429708538E-10 2.405907408414738E-11 peri 4.112153596420614E-13 -1.153081303703126E-12 1.991801143617519E-9 -4.382146429708538E-10 9.28846051296182E-10 -2.962042416525815E-11 i -7.202967645345098E-15 1.937033460898956E-14 -2.518369021538059E-11 2.405907408414738E-11 -2.962042416525815E-11 5.170718740492107E-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 15.1   n/a MPO474585   70632 (1999 TN220)          Discovered 1999-Oct-01 by CSS at Catalina Reference: 20031109/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1999 TN220 = 2002 EV70  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-31 20:04 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin