+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   16P/Brooks 2 Classification: Jupiter-family Comet          SPK-ID: 1000008 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] alternate orbits: [epoch=2015-May-22.0] K074/9 [epoch=2015-Mar-30.0] K212/2 (default) [epoch=1994-Sep-05.0] SAO/1994 [epoch=1987-Oct-12.0] SAO/1987 [epoch=1980-Nov-17.0] SAO/1980 [epoch=1973-Dec-24.0] SAO/1974 [epoch=1960-Jul-05.0] SAO/1960 [epoch=1953-Aug-11.0] SAO/1953 [epoch=1946-Aug-08.0] SAO/1946 [epoch=1939-Sep-14.0] SAO/1939 [epoch=1932-Oct-20.0] SAO/1932 [epoch=1925-Oct-17.0] SAO/1925 [epoch=1911-Jan-04.0] SAO/1911 [epoch=1903-Nov-22.0] SAO/1903 [epoch=1896-Nov-17.0] SAO/1896 [epoch=1889-Oct-05.0] SAO/1889 Orbital Elements at Epoch 2457111.5 (2015-Mar-30.0) TDB Reference: JPL K212/2 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .5630632502431984 6.3632e-07   a 3.356811571836155 1.1881e-06 au q 1.46671433774411 1.8085e-06 au i 4.259482438591073 3.2731e-05 deg node 159.2908192554265 0.00042635 deg peri 219.7163700336009 0.00042357 deg M 47.32913296538425 2.4209e-05 deg tp 2456816.164998552871 (2014-Jun-07.66499855) 0.00017921 TDB period 2246.409216892428 6.15 0.0011926 3.265e-06 d yr n .160255752733247 8.5081e-08 deg/d Q 5.2469088059282 1.8571e-06 au   Orbit Determination Parameters    # obs. used (total)      213      data-arc span      2448 days (6.70 yr)      first obs. used      2014-05-05      last obs. used      2021-01-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      1      norm. resid. RMS      .71684      source      ORB      producer      Javier Roa      solution date      2021-Feb-03 22:14:54   Additional Information  Earth MOID = .472329 au   Jupiter MOID = .247946 au   T_jup = 2.874  [ 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 comet total magnitude M1 12.1   0.8 K212/2 2 parameter fit from 101 observations, autocmod 2.8 comet total magnitude slope K1 13.5   n/a K212/2 autocmod 2.8 comet nuclear magnitude M2 15.6   1. K212/2 from 107 observations, autocmod 2.8 comet nuclear magnitude slope K2 5.   n/a K212/2 autocmod 2.8 comet nuclear phase coefficient PC 0.03   n/a K212/2 autocmod 2.8 16P/Brooks 2          Discovered 1889-Jul-07 by Brooks, William R. at Geneva, New York Reference: comet.dis Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   1996.0       1994 XXIII   1994j   1989.8       1987 XXIV   1987m   1977.5       1980 IX   1980f   1971.4       1974 I   1973j   1959.1       1960 VI   1960h   1952.9       1953 V   1953b   1946.8       1946 IV   1946e   1940.6       1939 VII   1939g   1934.5       1932 VIII   1932m   1922.2       1925 IX   1925g   1909.9       1911 I   1910d   1903.7       1903 V   1903d   1897.6   16P/1896 M1   1896 VI   1896c   1891.4   16P/1889 N1   1889 V   1889d  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-20 08:33 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin