+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   487834 (2015 TN77) Classification: Main-belt Asteroid          SPK-ID: 2487834 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07784218170711989 6.7924e-08   a 2.807937492682957 3.3426e-08 au q 2.589361512155296 1.8958e-07 au i 3.142274061998384 6.4067e-06 deg node 200.5895412094292 0.00011512 deg peri 105.0156163286115 0.00012259 deg M 123.2673594230175 3.9967e-05 deg tp 2458612.028855005124 (2019-May-08.52885501) 0.00019115 TDB period 1718.618888161215 4.71 3.0688e-05 8.402e-08 d yr n .2094705245472842 3.7404e-09 deg/d Q 3.026513473210619 3.6028e-08 au   Orbit Determination Parameters    # obs. used (total)      130      data-arc span      6055 days (16.58 yr)      first obs. used      2004-05-13      last obs. used      2020-12-10      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .59439      source      ORB      producer      Otto Matic      solution date      2021-Apr-14 17:22:51   Additional Information  Earth MOID = 1.57466 au   Jupiter MOID = 2.14198 au   T_jup = 3.316  [ hide covariance matrix ] Orbital Elements at Epoch 2457700.5 (2016-Nov-08.0) TDB Reference: JPL 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07996200745164481 6.7501e-08   q 2.582062923589248 1.8881e-07 au tp 2456895.562652122035 (2014-Aug-26.06265212) 0.00019051 TDB node 200.6278912009853 0.00011501 deg peri 105.3265837349029 0.00012215 deg i 3.143271299363446 6.4148e-06 deg   Orbit Determination Parameters    # obs. used (total)      130      data-arc span      6055 days (16.58 yr)      first obs. used      2004-05-13      last obs. used      2020-12-10      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .59439      source      ORB      producer      Otto Matic      solution date      2021-Apr-14 17:22:51   Additional Information  Jupiter MOID = 2.14198 au   T_jup = 3.316  Orbit Covariance (6×6)   e q tp node peri i e 4.556360359606689E-15 -1.257664305609769E-14 -4.898124874882311E-13 -3.362555692435427E-14 -2.416862650770489E-13 -3.303017176027594E-15 q -1.257664305609769E-14 3.565084627051197E-14 6.998219494718321E-14 9.622592127345507E-14 4.843095647818279E-13 9.660118581292048E-15 tp -4.898124874882311E-13 6.998219494718321E-14 3.629240965633438E-8 -6.517872664183029E-12 7.855500709595943E-9 -4.959689970266738E-12 node -3.362555692435427E-14 9.622592127345507E-14 -6.517872664183029E-12 1.322732644943751E-8 -1.320672303035895E-8 -1.236743240565795E-10 peri -2.416862650770489E-13 4.843095647818279E-13 7.855500709595943E-9 -1.320672303035895E-8 1.492090906659563E-8 1.225826683986102E-10 i -3.303017176027594E-15 9.660118581292048E-15 -4.959689970266738E-12 -1.236743240565795E-10 1.225826683986102E-10 4.1149405137693E-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 16.9   n/a MPO446847   487834 (2015 TN77)          Discovered 2008-Mar-05 by Mt. Lemmon Survey at Mount Lemmon Reference: Last Updated: 2017-03-14 Alternate Designations  2015 TN77 = 2010 TA21  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-18 16:12 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin