+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   215957 (2005 NT55) Classification: Main-belt Asteroid          SPK-ID: 2215957 [ 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 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2470738984021313 4.3166e-08   a 2.698097544821337 1.584e-08 au q 2.03146806615311 1.1901e-07 au i 12.18979021917586 5.4975e-06 deg node 224.1227571833129 2.1074e-05 deg peri 62.98908908130043 2.4316e-05 deg M 143.3530762862711 1.1148e-05 deg tp 2458355.901317746479 (2018-Aug-25.40131775) 4.7739e-05 TDB period 1618.769067416878 4.43 1.4255e-05 3.903e-08 d yr n .2223912028257765 1.9584e-09 deg/d Q 3.364727023489564 1.9753e-08 au   Orbit Determination Parameters    # obs. used (total)      352      data-arc span      6686 days (18.31 yr)      first obs. used      2001-10-07      last obs. used      2020-01-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5176      source      ORB      producer      Otto Matic      solution date      2020-Feb-25 03:29:15   Additional Information  Earth MOID = 1.04881 au   Jupiter MOID = 1.90512 au   T_jup = 3.293  [ hide covariance matrix ] Orbital Elements at Epoch 2457312.5 (2015-Oct-17.0) TDB Reference: JPL 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2479426597403752 4.2854e-08   q 2.027735072623695 1.1808e-07 au tp 2456739.276447761871 (2014-Mar-22.77644776) 4.4463e-05 TDB node 224.1437186500686 2.1084e-05 deg peri 63.11909111640129 2.4331e-05 deg i 12.18948221315786 5.498e-06 deg   Orbit Determination Parameters    # obs. used (total)      352      data-arc span      6686 days (18.31 yr)      first obs. used      2001-10-07      last obs. used      2020-01-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5176      source      ORB      producer      Otto Matic      solution date      2020-Feb-25 03:29:15   Additional Information  Jupiter MOID = 1.90512 au   T_jup = 3.293  Orbit Covariance (6×6)   e q tp node peri i e 1.83649320048038E-15 -5.035082920952811E-15 -4.123640170720062E-13 1.625873167404035E-14 -1.9532849855593E-13 -7.786000815084388E-15 q -5.035082920952811E-15 1.394196980580186E-14 1.145507600156194E-12 -4.689497484126967E-14 5.533554774215257E-13 2.29532898440084E-14 tp -4.123640170720062E-13 1.145507600156194E-12 1.97698791006681E-9 -2.424202654432304E-11 5.471946584200983E-10 1.507326357796283E-12 node 1.625873167404035E-14 -4.689497484126967E-14 -2.424202654432304E-11 4.445470602475274E-10 -4.407487240298962E-10 -2.399611254524399E-12 peri -1.9532849855593E-13 5.533554774215257E-13 5.471946584200983E-10 -4.407487240298962E-10 5.919803955893111E-10 3.068955894018377E-12 i -7.786000815084388E-15 2.29532898440084E-14 1.507326357796283E-12 -2.399611254524399E-12 3.068955894018377E-12 3.022839615678213E-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 16.0   n/a MPO433413   215957 (2005 NT55)          Discovered 2005-Jul-11 by Lowe, A. at Mayhill Reference: 20090607/Numbers.arc Last Updated: 2009-06-08 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-20 17:46 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin