+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   359744 (2011 UN61) Classification: Main-belt Asteroid          SPK-ID: 2359744 [ 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 7 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09295866488620547 5.7364e-08   a 2.631054381360752 3.5884e-08 au q 2.386475078826455 1.7306e-07 au i 2.053342864864648 5.208e-06 deg node 113.2529680266201 0.00025752 deg peri 332.5553018712658 0.00026872 deg M 340.5726092040537 7.9904e-05 deg tp 2459084.621138041768 (2020-Aug-23.12113804) 0.00034722 TDB period 1558.809930428514 4.27 3.189e-05 8.731e-08 d yr n .2309454109655542 4.7247e-09 deg/d Q 2.875633683895049 3.922e-08 au   Orbit Determination Parameters    # obs. used (total)      139      data-arc span      5736 days (15.70 yr)      first obs. used      2004-02-12      last obs. used      2019-10-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .67814      source      ORB      producer      Otto Matic      solution date      2019-Nov-08 11:17:39   Additional Information  Earth MOID = 1.40295 au   Jupiter MOID = 2.28436 au   T_jup = 3.393  [ hide covariance matrix ] Orbital Elements at Epoch 2457384.5 (2015-Dec-28.0) TDB Reference: JPL 7 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09105181221190282 5.7558e-08   q 2.391791176016746 1.7367e-07 au tp 2457522.523226481891 (2016-May-14.02322648) 0.00033409 TDB node 113.3090460700026 0.0002578 deg peri 331.8896478458251 0.00026955 deg i 2.052638215403101 5.2054e-06 deg   Orbit Determination Parameters    # obs. used (total)      139      data-arc span      5736 days (15.70 yr)      first obs. used      2004-02-12      last obs. used      2019-10-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .67814      source      ORB      producer      Otto Matic      solution date      2019-Nov-08 11:17:39   Additional Information  Jupiter MOID = 2.28436 au   T_jup = 3.393  Orbit Covariance (6×6)   e q tp node peri i e 3.312945311981475E-15 -9.886926855607975E-15 -1.065280575093149E-11 -1.027012300326397E-13 -2.408263514711261E-12 -4.420894538306755E-15 q -9.886926855607975E-15 3.016208449911084E-14 3.531465007864208E-11 3.221728083075149E-13 8.01796702972468E-12 1.446205388792679E-14 tp -1.065280575093149E-11 3.531465007864208E-11 1.116167371552596E-7 5.329036147177159E-10 2.644451096086809E-8 3.064588771683179E-11 node -1.027012300326397E-13 3.221728083075149E-13 5.329036147177159E-10 6.645966356207589E-8 -6.628884545980809E-8 4.266744374379298E-10 peri -2.408263514711261E-12 8.01796702972468E-12 2.644451096086809E-8 -6.628884545980809E-8 7.265953006069222E-8 -4.190471162667012E-10 i -4.420894538306755E-15 1.446205388792679E-14 3.064588771683179E-11 4.266744374379298E-10 -4.190471162667012E-10 2.709567683768713E-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 17.2   n/a MPO494870   359744 (2011 UN61)          Discovered 2007-Nov-05 by Mt. Lemmon Survey at Mount Lemmon Reference: 20130327/Numbers.arc Last Updated: 2013-03-29 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-23 09:14 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin