+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1812035872446973 3.7924e-08   a 2.636165551977268 1.2128e-08 au q 2.158482897388089 1.017e-07 au i 10.66007389957964 6.7321e-06 deg node 347.4600904893633 1.7578e-05 deg peri 297.3464512870329 2.729e-05 deg M 55.18115933605223 1.7769e-05 deg tp 2458960.867472965137 (2020-Apr-21.36747297) 7.7678e-05 TDB period 1563.354426955441 4.28 1.0789e-05 2.954e-08 d yr n .2302740784769344 1.5892e-09 deg/d Q 3.113848206566447 1.4326e-08 au   Orbit Determination Parameters    # obs. used (total)      935      data-arc span      7766 days (21.26 yr)      first obs. used      1999-09-05      last obs. used      2020-12-09      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51657      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 06:41:38   Additional Information  Earth MOID = 1.16496 au   Jupiter MOID = 2.1762 au   T_jup = 3.350  [ hide covariance matrix ] Orbital Elements at Epoch 2457646.5 (2016-Sep-15.0) TDB Reference: JPL 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1804715580637199 3.8002e-08   q 2.161382220546217 1.0197e-07 au tp 2457397.894577194269 (2016-Jan-10.39457719) 8.2229e-05 TDB node 347.5168075938295 1.7585e-05 deg peri 297.567519555755 2.7334e-05 deg i 10.65605451450089 6.7296e-06 deg   Orbit Determination Parameters    # obs. used (total)      935      data-arc span      7766 days (21.26 yr)      first obs. used      1999-09-05      last obs. used      2020-12-09      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51657      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 06:41:38   Additional Information  Jupiter MOID = 2.1762 au   T_jup = 3.350  Orbit Covariance (6×6)   e q tp node peri i e 1.444169562694415E-15 -3.856860377323035E-15 1.675298875253138E-12 -1.433001062146167E-14 4.070007599344584E-13 -6.396185363156365E-15 q -3.856860377323035E-15 1.039837058315152E-14 -4.784281166559662E-12 3.911889423576536E-14 -1.16244961416175E-12 1.750498252509553E-14 tp 1.675298875253138E-12 -4.784281166559662E-12 6.761661035841563E-9 -3.149105942492838E-11 1.7257268610406E-9 -1.833346703344872E-11 node -1.433001062146167E-14 3.911889423576536E-14 -3.149105942492838E-11 3.0924287680707E-10 -3.109031921190456E-10 -2.555539688328662E-13 peri 4.070007599344584E-13 -1.16244961416175E-12 1.7257268610406E-9 -3.109031921190456E-10 7.47145853057399E-10 -4.247290481687266E-12 i -6.396185363156365E-15 1.750498252509553E-14 -1.833346703344872E-11 -2.555539688328662E-13 -4.247290481687266E-12 4.528746167628852E-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 15.20   n/a E2021B10   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 ] 2021-Mar-01 11:48 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin