+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   212242 (2005 JL49) Classification: Main-belt Asteroid          SPK-ID: 2212242 [ 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 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05408091241214808 6.1553e-08   a 2.569154065113506 2.1379e-08 au q 2.430211869144788 1.5663e-07 au i 3.404288594716634 6.2322e-06 deg node 127.2094694759675 9.6646e-05 deg peri 209.2439417536586 0.00010796 deg M 133.1837811335893 4.9003e-05 deg tp 2458444.041873338135 (2018-Nov-21.54187334) 0.00020253 TDB period 1504.124029917251 4.12 1.8774e-05 5.14e-08 d yr n .2393419643856134 2.9874e-09 deg/d Q 2.708096261082224 2.2535e-08 au   Orbit Determination Parameters    # obs. used (total)      176      data-arc span      7275 days (19.92 yr)      first obs. used      2000-02-04      last obs. used      2020-01-05      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .639      source      ORB      producer      Otto Matic      solution date      2020-Jan-30 00:55:35   Additional Information  Earth MOID = 1.42073 au   Jupiter MOID = 2.48098 au   T_jup = 3.426  [ hide covariance matrix ] Orbital Elements at Epoch 2457027.5 (2015-Jan-05.0) TDB Reference: JPL 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05522898221452573 6.1775e-08   q 2.426798922502154 1.5745e-07 au tp 2456934.724731921506 (2014-Oct-04.22473192) 0.00019266 TDB node 127.280873576124 9.6613e-05 deg peri 207.8968089491729 0.00010742 deg i 3.405122539894006 6.2365e-06 deg   Orbit Determination Parameters    # obs. used (total)      176      data-arc span      7275 days (19.92 yr)      first obs. used      2000-02-04      last obs. used      2020-01-05      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .639      source      ORB      producer      Otto Matic      solution date      2020-Jan-30 00:55:35   Additional Information  Jupiter MOID = 2.48098 au   T_jup = 3.426  Orbit Covariance (6×6)   e q tp node peri i e 3.816152016267756E-15 -9.647823724785436E-15 1.196523992417367E-12 4.439886850439996E-14 2.932490776731638E-13 3.669061018182841E-15 q -9.647823724785436E-15 2.479181942914453E-14 -2.197943295583832E-12 -1.140023001778015E-13 -5.353140686651143E-13 -8.830149313767608E-15 tp 1.196523992417367E-12 -2.197943295583832E-12 3.711820451466858E-8 -8.110644551946839E-11 9.086829089774025E-9 3.295518303002745E-12 node 4.439886850439996E-14 -1.140023001778015E-13 -8.110644551946839E-11 9.334105566252245E-9 -9.336140402967616E-9 1.916104697071394E-10 peri 2.932490776731638E-13 -5.353140686651143E-13 9.086829089774025E-9 -9.336140402967616E-9 1.154011953836642E-8 -1.90424407276237E-10 i 3.669061018182841E-15 -8.830149313767608E-15 3.295518303002745E-12 1.916104697071394E-10 -1.90424407276237E-10 3.88943707732276E-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 16.9   n/a MPO454524   212242 (2005 JL49)          Discovered 2005-May-04 by Spacewatch at Kitt Peak Reference: 20090409/Numbers.arc Last Updated: 2009-04-10 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-27 23:40 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin