16P/Brooks
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16P/Brooks, also known as Brooks 2, is a periodic comet discovered by William Robert Brooks on 7 July 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 1 August 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 2 August 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 13 January 1891. After the discovery apparition, the comet has always been over two magnitudes fainter.
1886
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,[1][2]Template:Efn when it spent two days within the orbit of Io.Template:Efn
| Date & time of closest approach |
Jupiter distance (AU) |
Sun distance (AU) |
Velocity wrt Jupiter (km/s) |
Velocity wrt Sun (km/s) |
Reference |
|---|---|---|---|---|---|
| 1886-Jul-20 22:32 | Script error: No such module "convert". | Script error: No such module "convert". | 41.1 | 40.1 | Horizons |
The very close approach to Jupiter in 1886 resulted in the previous perihelion distance becoming the new aphelion distance.
| Epoch | Aphelion (AD) |
Perihelion (QR) |
Period |
|---|---|---|---|
| 1865 | 14 AUTemplate:Efn | 5.5 AU | 31 years |
| 1889 | 5.4 AU | 1.95 AU | 7 years |
On 31 December 2016 the comet passed Script error: No such module "convert". from Jupiter and on 5 July 2053 ± 3 days it will pass about Script error: No such module "convert". from Jupiter.[4]
Notes
References
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External links
- Template:JPL Small Body
- 16P/Brooks 2 – Seiichi Yoshida @ aerith.net
- 16P at Kronk's Cometography