+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   59621 (1999 JN72) Classification: Main-belt Asteroid          SPK-ID: 2059621 [ 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 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2021556905750992 4.0311e-08   a 2.731387746748435 1.2378e-08 au q 2.179222170576141 1.0983e-07 au i 13.00291258698598 4.8782e-06 deg node 197.5874154904365 1.5947e-05 deg peri 136.0994334652236 1.9024e-05 deg M 155.0226175842116 1.1013e-05 deg tp 2458290.487447088728 (2018-Jun-20.98744709) 4.9683e-05 TDB period 1648.820817447544 4.51 1.1208e-05 3.069e-08 d yr n .2183378546598519 1.4841e-09 deg/d Q 3.283553322920729 1.488e-08 au   Orbit Determination Parameters    # obs. used (total)      1102      data-arc span      14262 days (39.05 yr)      first obs. used      1981-05-01      last obs. used      2020-05-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51655      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 22:45:53   Additional Information  Earth MOID = 1.1908 au   Jupiter MOID = 2.24031 au   T_jup = 3.288  [ hide covariance matrix ] Orbital Elements at Epoch 2457182.5 (2015-Jun-09.0) TDB Reference: JPL 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2036987342232303 4.0533e-08   q 2.174050407732262 1.1042e-07 au tp 2456637.065791124961 (2013-Dec-10.56579112) 4.8536e-05 TDB node 197.7005372320485 1.6001e-05 deg peri 135.2217348025792 1.8949e-05 deg i 12.97932734624595 4.8734e-06 deg   Orbit Determination Parameters    # obs. used (total)      1102      data-arc span      14262 days (39.05 yr)      first obs. used      1981-05-01      last obs. used      2020-05-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51655      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 22:45:53   Additional Information  Jupiter MOID = 2.24031 au   T_jup = 3.288  Orbit Covariance (6×6)   e q tp node peri i e 1.642956446550632E-15 -4.458232346771933E-15 7.817721399956546E-13 -6.731633376702824E-16 1.427046415409754E-13 1.687678379844631E-15 q -4.458232346771933E-15 1.219216306535143E-14 -2.172378570737708E-12 3.275602168013734E-15 -3.919546332634772E-13 -4.300900472694528E-15 tp 7.817721399956546E-13 -2.172378570737708E-12 2.355748951427378E-9 2.228295520598525E-12 5.008958452289506E-10 -1.655052386735541E-12 node -6.731633376702824E-16 3.275602168013734E-15 2.228295520598525E-12 2.560170587570564E-10 -2.488374225492354E-10 -4.252713539404563E-13 peri 1.427046415409754E-13 -3.919546332634772E-13 5.008958452289506E-10 -2.488374225492354E-10 3.590537127189435E-10 -5.726897319013045E-14 i 1.687678379844631E-15 -4.300900472694528E-15 -1.655052386735541E-12 -4.252713539404563E-13 -5.726897319013045E-14 2.374968934889062E-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 14.6   n/a MPO452977   59621 (1999 JN72)          Discovered 1999-May-12 by LINEAR at Socorro Reference: 20030614/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1999 JN72 = 1982 UV4 = 2000 QG123  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-24 13:25 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin