+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   16P/Brooks 2 Classification: Jupiter-family Comet          SPK-ID: 1000008 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] alternate orbits: [epoch=2008-10-01.0] K074/5 (default) [epoch=2000-08-04.0] K014/8 [epoch=1994-09-05.0] SAO/1994 [epoch=1987-10-12.0] SAO/1987 [epoch=1980-11-17.0] SAO/1980 [epoch=1973-12-24.0] SAO/1974 [epoch=1960-07-05.0] SAO/1960 [epoch=1953-08-11.0] SAO/1953 [epoch=1946-08-08.0] SAO/1946 [epoch=1939-09-14.0] SAO/1939 [epoch=1932-10-20.0] SAO/1932 [epoch=1925-10-17.0] SAO/1925 [epoch=1911-01-04.0] SAO/1911 [epoch=1903-11-22.0] SAO/1903 [epoch=1896-11-17.0] SAO/1896 [epoch=1889-10-05.0] SAO/1889 Orbital Elements at Epoch 2454740.5 (2008-Oct-01.0) TDB Reference: JPL K074/5 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.5627722432037660649228 4.5687e-07   a 3.3542546059217359655235 1.8085e-06 AU q 1.4665732170705960690781 2.254e-06 AU i 4.2580642568509210477145 1.7686e-05 deg node 159.3684104561592 0.00024124 deg peri 219.4791568971276 0.00023871 deg M 27.49885781345255 8.2885e-05 deg tp 2454569.102446434448 (2008-Apr-12.60244643) 0.00039741 JED period 2243.84298803179 6.14 0.0018147 4.968e-06 d yr n .1604390333549041 1.2976e-07 deg/d Q 5.241935994772875 2.8263e-06 AU Additional Model Parameters  Parameter Value Uncertainty (1-sigma)  A1 [EST] 4.648033080841563E-9 2.447E-10 A2 [EST] -1.317527574283039E-9 2.056E-12   Orbit Determination Parameters    # obs. used (total)      490      data-arc span      7997 days (21.89 yr)      first obs. used      1987-04-11      last obs. used      2009-03-03      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      2      fit RMS      .95298      data source      ORB      producer      Nick Mastrodemos      solution date      2009-Apr-10 09:34:11   Additional Information  Earth MOID = .471352 AU   T_jup = 2.875  [ 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 12.8 mag 01. K074/5 2 parameter fit from 279 observations, autocmod 2.4a comet total magnitude slope K1 11.   n/a K074/5 autocmod 2.4a 16P/Brooks 2          Discovered 1889-Jul-07 by Brooks, William R. at Geneva, New York 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 1922-Jan-10 16:01 00:17 Jupiter 0.0888168996745405 0.0887394773578458 0.0888943289980637 5.59204656385781 3.49249631667711 2423065.167541308 17.9325569244572 279.772937403457 11.3931326412574 19.3409969715802 30267.5335224094 T K074/5 CATAB v2.0b-linF95 2009-Apr-10 09:37:01 2009-Apr-10 09:37 1958-Mar-28 12:20 00:07 Jupiter 1.3287062536992 1.32863061128774 1.32878189368621 7.08419367986303 6.99362865679588 2436291.014443417 7.52488445119964 589.175367757403 12.553455554685 -0.970516111081402 47653.4116439743 T K074/5 CATAB v2.0b-linF95 2009-Apr-10 09:37:01 2009-Apr-10 09:37 1969-May-04 22:17 00:02 Jupiter 1.60071472497182 1.60062523358142 1.60080421310286 7.89989385336677 7.83262519672731 2440346.428492516 2.89393357728689 824.000272935601 17.506331238205 1.25718285857178 52163.8289404625 T K074/5 CATAB v2.0b-linF95 2009-Apr-10 09:37:01 2009-Apr-10 09:37 2005-Sep-20 07:57 00:02 Jupiter 0.390451712998037 0.390441285899373 0.390462140020726 4.75018289975753 4.26914013507611 2453633.831865082 2.12814847766262 42.6038579085739 8.31029150475449 -0.600670831814388 107687.542556371 T K074/5 CATAB v2.0b-linF95 2009-Apr-10 09:37:01 2009-Apr-10 09:37 2016-Dec-31 21:41 00:05 Jupiter 0.333149653614961 0.333137025784341 0.333162281533868 4.80886064134513 4.2473760665344 2457754.403617028 5.80261067672308 60.1526555866208 12.3754771198047 -33.1304592201743 180667.723288419 T K074/5 CATAB v2.0b-linF95 2009-Apr-10 09:37:01 2009-Apr-10 09:37 2053-Jul-03 05:43 00:26 Jupiter 0.247416666984736 0.247133311313815 0.247700024705741 4.64027529945611 3.83213034007205 2471086.738719975 26.647214180488 1225.58166666329 13.3188305477418 -28.4452898203888 97739.8760481191 T K074/5 CATAB v2.0b-linF95 2009-Apr-10 09:37:01 2009-Apr-10 09:37 2064-Oct-17 20:19 00:37 Jupiter 0.712657697056738 0.710595968118403 0.714715720756188 5.4278767127016 5.20430250910643 2475211.346596289 37.1812607155553 12621.3858037012 17.2500556779617 -8.40447157406915 78005.5710522098 T K074/5 CATAB v2.0b-linF95 2009-Apr-10 09:37:01 2009-Apr-10 09:37 2112-Dec-16 21:47 05:33 Jupiter 1.62109317323902 1.61041162117405 1.63171287387212 8.06890366422905 8.00388684783938 2492802.408296194 333.766947205862 119970.199392554 56.2576160755591 -1.42753518616485 13173.3839625052 T K074/5 CATAB v2.0b-linF95 2009-Apr-10 09:37:01 2009-Apr-10 09:37 2124-Apr-09 01:47 08:57 Jupiter 0.311027478536233 0.306918436144764 0.315127449290108 4.5321739233736 3.88509864013138 2496933.574367703 537.565942295147 17488.6585605005 26.6568479753243 -22.7975362924103 48759.474966492 T K074/5 CATAB v2.0b-linF95 2009-Apr-10 09:37:01 2009-Apr-10 09:37 2148-Oct-16 09:02 1_08:35 Jupiter 1.94835639867581 1.87224825647859 2.02195068663804 8.28042028932426 8.22775098367399 2505889.876837627 1955.8063995543 929554.723723328 131.152601331861 7.23635678676142 38074.5691266948 T K074/5 CATAB v2.0b-linF95 2009-Apr-10 09:37:01 2009-Apr-10 09:37 2183-Jul-19 23:42 3_00:36 Jupiter 0.20789676139038 0.149320651225859 0.265099910956557 4.61723662749664 3.62910211922109 2518584.487888403 4356.34334273233 210104.493138739 30.6822511978107 -17.3606799255138 21109.3782501381 T K074/5 CATAB v2.0b-linF95 2009-Apr-10 09:37:01 2009-Apr-10 09:37 Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   1996.0       1994 XXIII   1994j   1989.8       1987 XXIV   1987m   1977.6       1980 IX   1980f   1971.4       1974 I   1973j   1959.1       1960 VI   1960h   1953.0       1953 V   1953b   1946.8       1946 IV   1946e   1940.7       1939 VII   1939g   1934.6       1932 VIII   1932m   1922.3       1925 IX   1925g   1910.0       1911 I   1910d   1903.8       1903 V   1903d   1897.7   16P/1896 M1   1896 VI   1896c   1891.6   16P/1889 N1   1889 V   1889d  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2013-May-24 23:13 UT (server date/time)   Site Manager:   Donald K. 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