+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   105P/Singer Brewster Classification: Jupiter-family Comet          SPK-ID: 1000086 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] alternate orbits: [epoch=2013-03-13.0] 36 (default) [epoch=1999-04-12.0] SAO/1999 [epoch=1992-10-25.0] SAO/1992 [epoch=1986-06-19.0] SAO/1986 Orbital Elements at Epoch 2456364.5 (2013-Mar-13.0) TDB Reference: JPL 36 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .4090801715603757 3.1001e-07   a 3.47004826613181 2.7483e-07 AU q 2.050520326099825 9.4754e-07 AU i 9.170894334227624 2.3131e-05 deg node 192.4125590772428 0.00013297 deg peri 46.63529856040196 0.00014286 deg M 58.08508238263528 6.1339e-05 deg tp 2455983.553656697598 (2012-Feb-26.05365670) 0.00038525 JED period 2361.031059325197 6.46 0.00028049 7.679e-07 d yr n .1524757578169645 1.8114e-08 deg/d Q 4.889576206163795 3.8725e-07 AU Additional Model Parameters  Parameter Value Uncertainty (1-sigma)  A1 [EST] 2.625617974678633E-9 1.332E-10 A2 [EST] -2.244252852679116E-10 4.274E-11 A3 [EST] -1.164257417871125E-9 1.437E-10 DT [EST] -120.6821975006365 13.62   Orbit Determination Parameters    # obs. used (total)      333      data-arc span      9684 days (26.51 yr)      first obs. used      1986-05-03      last obs. used      2012-11-06      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .82437      data source      ORB      producer      Ryan S. Park      solution date      2013-Mar-03 19:26:47   Additional Information  Earth MOID = 1.05143 AU   T_jup = 2.971  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes comet total magnitude M1 12.6 mag 1. 36 from 151 observations, assumed slope, autocmod 2.5b comet total magnitude slope K1 13.   n/a 36 autocmod 2.5b comet nuclear magnitude M2 16.3 mag 0.9 36 from 103 observations, autocmod 2.5b comet nuclear magnitude slope K2 5.   n/a 36 autocmod 2.5b comet nuclear phase coefficient PC 0.03   n/a 36 autocmod 2.5b diameter diameter 2.2 km n/a Scotti,J (1994) BAAS 26:1375   105P/Singer Brewster          Discovered 1986-May-03 by Singer-Brewster, Stephen at Palomar Mountain Observatory, California (675) discovered on plate/photo taken on discovery date as well as 5/4 Reference: comet.dis Last Updated: 2003-08-29 [ 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 1917-Jul-16 10:01 00:54 Jupiter 0.87952207756972 0.878672704437441 0.880370944154249 5.22612162803543 5.0384769525045 2421425.917513393 54.2668086725962 4913.51350245047 104.654061013048 4.31518465648155 7952.5299222662 T 36 CATAB v2.0c-linF95 2013-Mar-03 19:33:44 2013-Mar-03 19:34 1928-Dec-25 07:05 00:07 Jupiter 0.661315132781574 0.660808749242359 0.661821318039118 5.54506304039904 5.30905768792898 2425605.795763739 7.41548021568016 3052.02432135583 70.2010923010159 11.3478981204231 24914.7943102993 T 36 CATAB v2.0c-linF95 2013-Mar-03 19:33:44 2013-Mar-03 19:34 1976-Aug-05 12:41 00:06 Jupiter 0.376811489693801 0.376789285967494 0.376833693981376 4.20205835457632 3.62788618454397 2442996.028574218 6.47049682992436 83.269822833159 32.3126645588191 -40.9576048704654 86317.5213636381 T 36 CATAB v2.0c-linF95 2013-Mar-03 19:33:44 2013-Mar-03 19:34 1988-May-27 13:11 00:01 Jupiter 1.63439157204787 1.63436713630314 1.63441600755172 8.54454842942248 8.48367897548422 2447309.049670292 1.09834473374329 252.877154674508 25.9032772059079 7.24431847160599 215339.391097726 T 36 CATAB v2.0c-linF95 2013-Mar-03 19:33:44 2013-Mar-03 19:34 2048-May-29 21:33 00:04 Jupiter 1.2262336575424 1.2261691447109 1.22629816860643 6.51067881132597 6.40370485841668 2469226.398080756 4.66892934524214 544.794532569754 85.2378089253651 18.8321565238777 82453.720228263 T 36 CATAB v2.0c-linF95 2013-Mar-03 19:33:44 2013-Mar-03 19:34 2059-Aug-06 17:23 00:07 Jupiter 0.407569511535905 0.407556667477796 0.40758235538789 4.20672130663055 3.67968033117369 2473312.224664185 7.67191484255932 60.1715815598253 45.8104693655434 -53.786557077405 85342.2749759753 T 36 CATAB v2.0c-linF95 2013-Mar-03 19:33:44 2013-Mar-03 19:34 2071-Jun-19 10:59 00:09 Jupiter 1.79659723368351 1.79643560915878 1.79675884592441 9.05034038333793 8.9980965978988 2477646.958116311 9.04130942706879 2142.46114547876 114.70217216501 7.76019051224046 50583.704525677 T 36 CATAB v2.0c-linF95 2013-Mar-03 19:33:44 2013-Mar-03 19:34 2131-Jul-09 12:25 00:18 Jupiter 1.53193424720025 1.53142201006723 1.53244635247424 8.19236910848091 8.12459787325705 2499581.017533374 18.4211718701312 5857.00759525092 447.550954653051 10.8533337477878 14022.282532673 T 36 CATAB v2.0c-linF95 2013-Mar-03 19:33:44 2013-Mar-03 19:34 2143-Feb-09 23:41 00:33 Jupiter 0.46990662430935 0.469839990698342 0.469973257106106 4.00002465765815 3.52067178515139 2503814.487064560 33.724959201554 299.165010013403 204.022791297718 64.1141981516268 21588.3352055864 T 36 CATAB v2.0c-linF95 2013-Mar-03 19:33:44 2013-Mar-03 19:34 2154-May-25 00:40 00:25 Jupiter 0.91406013209706 0.913312135316351 0.914807868599073 5.71931461184239 5.55492939295378 2507936.528466489 25.8222194519501 6285.45314105575 179.211353885178 23.2503252869709 28514.3158009157 T 36 CATAB v2.0c-linF95 2013-Mar-03 19:33:44 2013-Mar-03 19:34 2178-Apr-06 12:18 01:21 Vesta 0.0445856049514541 0.0445094023186905 0.0446638881987959 4.61785839452238 4.61785781661353 2516654.013168233 81.6006623046771 27194.4480605272 3174.07331736342 -85.3935486715878 2088.02754271333 T 36 CATAB v2.0c-linF95 2013-Mar-03 19:33:44 2013-Mar-03 19:34 Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   1992.8   105P/1992 G1   1992 XXVI   1992e   1986.3   105P/1986 J1   1986 XI   1986d  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2013-May-25 11:21 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin