16P/Brooks, also known as Brooks 2, is a periodiccomet discovered by William Robert Brooks on July 7, 1889, but failed to note any motion. He was able to confirm the discovery the next morning, having seen that the comet had moved north. On August 1, 1889, the famous comet hunter Edward Emerson Barnard discovered two fragments of the comet labeled "B" and "C" located 1 and 4.5 arc minutes away. On August 2, he found another four or five, but these were no longer visible the next day. On August 4, he observed two more objects, labeled "D" and "E". "E" disappeared by the next night and "D" was gone by the next week. Around mid-month, "B" grew large and faint, finally disappearing at the beginning of September. "C" managed to survive until mid-November 1889. The apparition ended on January 13, 1891. After the discovery apparition, the comet has always been over two magnitudes fainter.
The comet's breakup is believed to have been caused by the passage of the comet within Jupiter's Roche limit around 20 July 1886,[5][4][a] when it spent two days within the orbit of Io.[b]
16P/Brooks 2 best-fit Jupiter approach around 1886-Jul-20[5]
On 31 December 2016 the comet passed 0.333 AU (49.8 million km) from Jupiter and on 5 July 2053 ± 3 days it will pass about 0.26 AU (39 million km) from Jupiter.[7]
Notesedit
^Jupiter came to aphelion (farthest distance from the Sun) one month later on 1886-Aug-21 at 5.4568 AU.
^Io orbits 0.0028 AU (420 thousand km) from Jupiter.
^16P/Brooks came to aphelion (farthest distance from the Sun) around 1870 at ≈14.3 AU.
Referencesedit
^ ab"Horizons Batch for 16P/Brooks 2 (90000273) on 2028-Apr-21" (Perihelion occurs when rdot flips from negative to positive). JPL Horizons. from the original on 2022-06-15. Retrieved 2022-06-15. (JPL#K212/6 Soln.date: 2022-Feb-04)
^Syuichi Nakano (2011-11-01). "16P/Brooks 2 (NK 2146)". OAA Computing and Minor Planet Sections. Retrieved 2012-02-18.
^ abKinoshita, Kazuo (2016-08-01). "16P/Brooks past, present and future orbital elements". Comet Orbit. from the original on 2011-07-10. Retrieved 2023-07-19.
^ ab"Horizons Batch for 16P/Brooks 2 (90000258) on 1886-Jul-20" (1889–1904 dataset). JPL Horizons. from the original on 2023-07-20. Retrieved 2023-07-19.
^Horizons output. "Osculating Orbital Elements for 16P/Brooks (90000258)". Retrieved 2023-07-20.
^"JPL Small-Body Database Lookup: 16P/Brooks 2". Archived from the original on 2012-12-12. Retrieved 2023-07-19. 2022-01-29 last obs
External linksedit
Orbital simulation from JPL (Java) / Horizons Ephemeris
brooks, also, known, brooks, periodic, comet, discovered, william, robert, brooks, july, 1889, failed, note, motion, able, confirm, discovery, next, morning, having, seen, that, comet, moved, north, august, 1889, famous, comet, hunter, edward, emerson, barnard. 16P Brooks also known as Brooks 2 is a periodic comet discovered by William Robert Brooks on July 7 1889 but failed to note any motion He was able to confirm the discovery the next morning having seen that the comet had moved north On August 1 1889 the famous comet hunter Edward Emerson Barnard discovered two fragments of the comet labeled B and C located 1 and 4 5 arc minutes away On August 2 he found another four or five but these were no longer visible the next day On August 4 he observed two more objects labeled D and E E disappeared by the next night and D was gone by the next week Around mid month B grew large and faint finally disappearing at the beginning of September C managed to survive until mid November 1889 The apparition ended on January 13 1891 After the discovery apparition the comet has always been over two magnitudes fainter 16P BrooksDiscoveryDiscovered byWilliam Robert BrooksDiscovery date7 July 1889DesignationsAlternative designations1889 V 1896 VI 1903 V 1911 I 1925 IX 1932 VIII 1939 VII 1946 IV 1953 V 1960 VI 1974 I 1980 IX 1987 XXIV 1994 XXIIIOrbital characteristicsEpoch2023 02 25Aphelion5 439 AUPerihelion1 879 AUSemi major axis3 659 AUEccentricity0 4864Orbital period6 99 yrMax orbital speed40 km s 1886 Jupiter approach 26 km s 2028 perihelion 1 Inclination3 011 Last perihelionApril 18 2021 2 June 7 2014 3 4 April 12 2008Next perihelion2028 Apr 21 1 1886 editThe comet s breakup is believed to have been caused by the passage of the comet within Jupiter s Roche limit around 20 July 1886 5 4 a when it spent two days within the orbit of Io b 16P Brooks 2 best fit Jupiter approach around 1886 Jul 20 5 Date amp time ofclosest approach Jupiter distance AU Sun distance AU Velocitywrt Jupiter km s Velocitywrt Sun km s Reference 1886 Jul 20 22 32 0 001 AU 150 thousand km 93 thousand mi 0 39 LD 5 457 AU 816 million km 507 million mi 41 1 40 1 Horizons The very close approach to Jupiter in 1886 resulted in the previous perihelion distance becoming the new aphelion distance Orbital Elements for 1865 1889 6 Epoch Aphelion AD Perihelion QR Period 1865 14 AU c 5 5 AU 31 years 1889 5 4 AU 1 95 AU 7 years On 31 December 2016 the comet passed 0 333 AU 49 8 million km from Jupiter and on 5 July 2053 3 days it will pass about 0 26 AU 39 million km from Jupiter 7 Notes edit Jupiter came to aphelion farthest distance from the Sun one month later on 1886 Aug 21 at 5 4568 AU Io orbits 0 0028 AU 420 thousand km from Jupiter 16P Brooks came to aphelion farthest distance from the Sun around 1870 at 14 3 AU References edit a b Horizons Batch for 16P Brooks 2 90000273 on 2028 Apr 21 Perihelion occurs when rdot flips from negative to positive JPL Horizons Archived from the original on 2022 06 15 Retrieved 2022 06 15 JPL K212 6 Soln date 2022 Feb 04 16P Brooks Orbit Minor Planet Center Retrieved 2014 06 16 Syuichi Nakano 2011 11 01 16P Brooks 2 NK 2146 OAA Computing and Minor Planet Sections Retrieved 2012 02 18 a b Kinoshita Kazuo 2016 08 01 16P Brooks past present and future orbital elements Comet Orbit Archived from the original on 2011 07 10 Retrieved 2023 07 19 a b Horizons Batch for 16P Brooks 2 90000258 on 1886 Jul 20 1889 1904 dataset JPL Horizons Archived from the original on 2023 07 20 Retrieved 2023 07 19 Horizons output Osculating Orbital Elements for 16P Brooks 90000258 Retrieved 2023 07 20 JPL Small Body Database Lookup 16P Brooks 2 Archived from the original on 2012 12 12 Retrieved 2023 07 19 2022 01 29 last obsExternal links editOrbital simulation from JPL Java Horizons Ephemeris 16P Brooks 2 Seiichi Yoshida aerith net 16P at Kronk s Cometography Numbered comets Previous15P Finlay 16P Brooks Next17P Holmes Retrieved from https en wikipedia org w index php title 16P Brooks amp oldid 1191613395, wikipedia, wiki, book, books, library,
