+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   161995 (1983 LB) Classification: Amor [NEO]          SPK-ID: 2161995 [ 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 55 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .4790202243000166 8.497e-08   a 2.286759077189374 1.2894e-08 au q 1.191355231114021 1.9808e-07 au i 25.27209061386398 1.5566e-05 deg node 81.18816653491167 2.5576e-05 deg peri 220.6827653690999 4.6422e-05 deg M 232.95897916305 4.0189e-05 deg tp 2459446.228617616274 (2021-Aug-19.72861762) 0.00014416 TDB period 1263.074724090913 3.46 1.0683e-05 2.925e-08 d yr n .2850187666126459 2.4107e-09 deg/d Q 3.382162923264727 1.9071e-08 au   Orbit Determination Parameters    # obs. used (total)      137      data-arc span      12991 days (35.57 yr)      first obs. used      1983-06-13      last obs. used      2019-01-06      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .70671      source      ORB      producer      Otto Matic      solution date      2019-Jan-26 10:13:01   Additional Information  Earth MOID = .245614 au   Jupiter MOID = 2.06566 au   T_jup = 3.328  [ show covariance matrix ] [ 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 MPO299862   161995 (1983 LB)          Discovered 1983-Jun-13 by Swann, S. R., Helin, E. F. at Palomar Reference: 20070926/Numbers.arc Last Updated: 2007-09-30 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 1900-Jun-22 10:50 < 00:01 Earth 0.260683451078106 0.260678759306613 0.260688143496647 15.1003925008768 15.0997156073 2415192.951316037 0.30475217111131 698.961548215628 42.5538269400206 70.7457701429363 780598.204387661 T 55 CATAB v2.0e-lin.ifort 2019-Jan-26 10:13:30 2019-Jan-26 10:13 1938-Jun-25 14:58 < 00:01 Earth 0.328597246632271 0.328591649410953 0.328602844052124 13.3549087262756 13.3543015463772 2429075.123292530 0.111048074332509 491.361677825342 24.8457967234659 -55.4921029797365 1641279.89140674 T 55 CATAB v2.0e-lin.ifort 2019-Jan-26 10:13:30 2019-Jan-26 10:13 1945-Jun-19 05:40 < 00:01 Earth 0.374220014039478 0.374213865154006 0.374226162984958 17.4510464173158 17.4506384090614 2431625.735915602 0.234072483792109 389.058492204543 49.6886997842336 38.3624502958107 633495.863328371 T 55 CATAB v2.0e-lin.ifort 2019-Jan-26 10:13:30 2019-Jan-26 10:13 1983-Jun-25 10:37 < 00:01 Earth 0.274955975015506 0.274954316219361 0.274957633832969 13.5979712695425 13.5972586028587 2445510.942251343 0.109814032130752 158.470386544637 37.1974231237589 -61.3388961322504 921304.570533314 T 55 CATAB v2.0e-lin.ifort 2019-Jan-26 10:13:30 2019-Jan-26 10:13 1990-Jun-15 05:07 < 00:01 Earth 0.479231806401057 0.479229619830573 0.479233992976608 19.9479646953803 19.9476859734342 2448057.713359456 0.212590610774655 138.916882242062 47.0092674101735 41.1847023618552 962770.96029827 T 55 CATAB v2.0e-lin.ifort 2019-Jan-26 10:13:30 2019-Jan-26 10:13 2021-Jun-24 02:02 < 00:01 Earth 0.491526524710935 0.491521913690096 0.491531135878628 13.136142749044 13.1357300776546 2459389.584435756 0.227339882630731 483.18995530862 18.0970437670569 -61.6583616768428 7071514.0691475 T 55 CATAB v2.0e-lin.ifort 2019-Jan-26 10:13:30 2019-Jan-26 10:13 2028-Jun-22 16:23 < 00:01 Earth 0.257802411900203 0.257801614140856 0.257803209749717 14.8042205032012 14.8035223510572 2461945.182632850 0.202488128751859 315.124656449171 25.4245890515793 84.4103819747488 1311052.72328549 T 55 CATAB v2.0e-lin.ifort 2019-Jan-26 10:13:30 2019-Jan-26 10:13 2066-Jun-25 07:57 < 00:01 Earth 0.41968317755977 0.41967304746979 0.419693308090063 12.9936630535505 12.9931744379147 2475826.831290182 0.222152663607848 845.933536170915 22.1841412351645 -53.359745859182 3806817.83766752 T 55 CATAB v2.0e-lin.ifort 2019-Jan-26 10:13:30 2019-Jan-26 10:13 2073-Jun-19 21:42 < 00:01 Earth 0.308287689454729 0.308279832783091 0.308295546497283 16.5317940439618 16.5312712349621 2478378.403911511 0.504458986547692 663.459541989529 35.3434736247515 53.9183587475528 933040.793419642 T 55 CATAB v2.0e-lin.ifort 2019-Jan-26 10:13:30 2019-Jan-26 10:13 2111-Jun-26 13:36 < 00:01 Earth 0.286977863835698 0.286967924992607 0.286987803639156 13.2620512582125 13.2613511507297 2492263.066840473 0.193190532319471 965.617037712415 22.433312531743 -59.1425597403029 1590924.64492899 T 55 CATAB v2.0e-lin.ifort 2019-Jan-26 10:13:30 2019-Jan-26 10:13 2118-Jun-18 13:59 < 00:01 Earth 0.405130334191997 0.405115157436272 0.405145511296449 18.3774097752126 18.3770518951341 2494812.082440984 0.791337822734344 961.765739540583 38.371018278446 38.1405408389996 859593.742869511 T 55 CATAB v2.0e-lin.ifort 2019-Jan-26 10:13:30 2019-Jan-26 10:13 2156-Jun-24 05:07 < 00:01 Earth 0.23954508525352 0.23954307131104 0.239547101277917 14.1887475873946 14.1879636289781 2508697.713255161 0.55838068772456 1176.22079931146 31.2936569099604 -85.3412104503076 1037090.1663937 T 55 CATAB v2.0e-lin.ifort 2019-Jan-26 10:13:30 2019-Jan-26 10:13 2194-Jun-25 21:43 < 00:01 Earth 0.429700997950542 0.429674735163414 0.42972726381191 12.6719719218393 12.6714825824475 2522578.405061956 0.579066430342518 2236.33298920416 22.1861346771022 -54.1553724013579 4110824.9620152 T 55 CATAB v2.0e-lin.ifort 2019-Jan-26 10:13:30 2019-Jan-26 10:13 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Sep-20 12:25 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin