+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   413559 (2005 SN271) Classification: Main-belt Asteroid          SPK-ID: 2413559 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08160991019713811 6.752e-08   a 2.708789941878732 3.4028e-08 au q 2.487725837979098 1.9567e-07 au i 5.400103888072625 7.0623e-06 deg node 13.45901594537945 5.5775e-05 deg peri 332.4891437336006 6.5235e-05 deg M 130.4275083668403 3.3403e-05 deg tp 2458410.532461755502 (2018-Oct-19.03246176) 0.00015112 TDB period 1628.401220167881 4.46 3.0684e-05 8.401e-08 d yr n .2210757370734994 4.1657e-09 deg/d Q 2.929854045778367 3.6805e-08 au   Orbit Determination Parameters    # obs. used (total)      189      data-arc span      6113 days (16.74 yr)      first obs. used      2003-03-23      last obs. used      2019-12-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55457      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 13:26:27   Additional Information  Earth MOID = 1.48234 au   Jupiter MOID = 2.41362 au   T_jup = 3.353  [ hide covariance matrix ] Orbital Elements at Epoch 2457251.5 (2015-Aug-17.0) TDB Reference: JPL 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08214991322871916 6.7581e-08   q 2.485166395450297 1.9557e-07 au tp 2456774.145785530927 (2014-Apr-26.64578553) 0.00015445 TDB node 13.49949148650682 5.5765e-05 deg peri 330.7398974345167 6.5147e-05 deg i 5.403405082478458 7.0623e-06 deg   Orbit Determination Parameters    # obs. used (total)      189      data-arc span      6113 days (16.74 yr)      first obs. used      2003-03-23      last obs. used      2019-12-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55457      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 13:26:27   Additional Information  Jupiter MOID = 2.41362 au   T_jup = 3.353  Orbit Covariance (6×6)   e q tp node peri i e 4.567159592444168E-15 -1.30679469067566E-14 2.850796378415098E-12 6.028503423295038E-15 4.823351767653727E-13 1.401138961538577E-16 q -1.30679469067566E-14 3.824809583527173E-14 -8.844510614596364E-12 -1.766697159374521E-14 -1.475827487529374E-12 4.504034931811447E-16 tp 2.850796378415098E-12 -8.844510614596364E-12 2.385620470052542E-8 3.219806577468714E-12 5.206689723854681E-9 -5.736295653348497E-12 node 6.028503423295038E-15 -1.766697159374521E-14 3.219806577468714E-12 3.109684109926896E-9 -3.094880411182776E-9 -3.677740646606978E-11 peri 4.823351767653727E-13 -1.475827487529374E-12 5.206689723854681E-9 -3.094880411182776E-9 4.244089577383829E-9 3.538569990273579E-11 i 1.401138961538577E-16 4.504034931811447E-16 -5.736295653348497E-12 -3.677740646606978E-11 3.538569990273579E-11 4.987575354803351E-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 16.6   n/a MPO455944   413559 (2005 SN271)          Discovered 2005-Sep-30 by Mt. Lemmon Survey at Mount Lemmon Reference: Last Updated: 2014-11-10 Alternate Designations  2005 SN271 = 2014 TC9  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-18 08:37 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin