SOHO Comets 2012

The table list the provisional number for the comet, the day (UT) and month of the first (discovery) observation, the year and comet identification, the LASCO or STEREO coronagraph on which it was discovered, the discoverer (additional names are independent discoverers), with the number of their discoveries given in brackets following the name, and finally the date of discovery.

SOHO Observed   Des C  G  Observers				Discovered
2218 01/01/2012     C2 K  Szymon Liwo				Jan 01
2219 01/01/2012     C3 K  Szymon Liwo				Jan 01
2220 06/01/2012     C2 Y  Rob Matson				Jan 06
2221 09/01/2012     C3 K  Sergei Schmalz			Jan 09
2222 10/01/2012     C3 K  Sergei Schmalz			Jan 10
2223 15/01/2012     C3 K  Bo Zhou				Jan 15
2224 17/01/2012     C3 K  Bo Zhou				Jan 17
2225 18/01/2012     C2 R  Sergei Schmalz			Jan 18
42   17/01/2012 A3  H1 O  Alan Watson				Jan 19
2226 26/01/2012     C3 K  Szymon Liwo				Jan 26
2227 26/01/2012     C3 K  Szymon Liwo				Jan 26
2228 28/01/2012     C3 K  Krzysztof Kida (1)			Jan 28
2229 28/01/2012     C3 K  Masanori Uchina, Sergei Schmalz	Jan 29
2230 29/01/2012     C3 K  Zhijian Xu				Jan 29
2231 30/01/2012     C2 Y  Zhijian Xu				Jan 30
2232 31/01/2012     C3 K  Bo Zhou				Jan 31
2233 31/01/2012     C3 K  Bo Zhou                               Jan 31
2234 04/02/2012     C3 K  Masanori Uchina, Zhijian Xu		Feb 04
2235 04/02/2012     C2 Y  Sergei Schmalz			Feb 04
2236 04/02/2012     C3 K  Sergei Schmalz			Feb 04
2237 06/02/2012     C3 K  Sergei Schmalz			Feb 06
2238 09/02/2012     C3 K  Zhijian Xu, Sergei Schmalz		Feb 09
2239 11/02/2012     C2 Y  Szymon Liwo				Feb 11
2240 14/02/2012     C3 K  Krzysztof Kida (2)			Feb 14
2241 19/02/2012     C3 K  Masanori Uchina			Feb 19
2242 21/02/2012     C3 K  Sergei Schmalz			Feb 22
2243 25/02/2012     C3 K  Krzysztof Kida (3)			Feb 25
2244 28/02/2012     C3 K  Bo Zhou				Feb 28
2245 28/02/2012     C3 K  Zhijian Xu				Feb 28
2246 28/02/2012     C3 K  Bo Zhou				Feb 28
P    28/02/2012     C3 K  Szymon Liwo, Krzysztof Kida (4)	Feb 28
2247 29/02/2012     C3 Y  Krzysztof Kida (5)			Feb 29   
2248 04/03/2012     C3 K  Sergey Shurpakov			Mar 04
2257 06/03/2012 E2  SW K  Vladimir Bezugly			Mar 08
2249 11/03/2012     C2 K  Bo Zhou				Mar 11
2250 12/03/2012     C3 K  Krzysztof Kida (6), Sergei Schmalz	Mar 12
2251 15/03/2012     C2 Y  Bo Zhou				Mar 15
2252 17/03/2012     C2 O  Zhijian Xu				Mar 17
2253 17/03/2012     C2 O  Zhijian Xu                            Mar 17
2254 22/03/2012     C3 D  Bo Zhou				Mar 22
2255 25/03/2012     C3 K  Pedro Maysonet (1)			Mar 25
2256 30/03/2012     C3 K  Alan Watson				Mar 30
P    31/03/2012     C3 K  Sergey Shurpakov			Mar 31
2258 03/04/2012     C2 K  Marek Kaluzny				Apr 03
2259 05/04/2012     C2 Y  Sergei Schmalz, S Liwo, K Kida	Apr 05
2260 08/04/2012     C2 K  Bo Zhou				Apr 08
2261 10/04/2012     C2 D  Szymon Liwo				Apr 10
2262 10/04/2012     C2 K  Marek Kaluzny				Apr 10
2263 13/04/2012     C2 D  Sergei Schmalz, Krzysztof Kida	Apr 13
2264 13/04/2012     C2 K  Bo Zhou				Apr 13
2265 15/04/2012     C2 Y  Krzysztof Kida			Apr 15
2266 16/04/2012     C2 K  Sergei Schmalz			Apr 16
2267 16/04/2012     C2 K  Sergei Schmalz                        Apr 17
2268 17/04/2012     C2 Y  Sergei Schmalz			Apr 18
2269 18/04/2012     C2 K  Sergei Schmalz                        Apr 18
2270 18/04/2012     C3 K  Sergei Schmalz                        Apr 19
2271 19/04/2012     C2 K  Sergei Schmalz                        Apr 19
2272 20/04/2012     C2 K  Sergei Schmalz                        Apr 20
2273 22/04/2012     C3 K  Sergei Schmalz			Apr 22
2274 22/04/2012     C2 K  S Liwo, K Kida, R Reszelewski		Apr 22
2275 23/04/2012     C2 D  Sergei Schmalz			Apr 23
2291 23/04/2012     C3 O  Bo Zhou				Apr 23
2276 27/04/2012     C2 K  Masanori Uchina			Apr 27
2277 26/04/2012     C2 K  Sergei Schmalz			Apr 28
2278 28/04/2012     C2 K  Sergei Schmalz, Szymon Liwo		Apr 28
2279 28/04/2012     C2 K  Sergei Schmalz			Apr 28
2438 28/04/2012     C3 O  Bo Zhou				Apr 28 It is not (3200) Phaethon
2280 29/04/2012     C2 K  Sergei Schmalz			Apr 29
2281 30/04/2012     C2 K  Zhijian Xu				Apr 30
2282 01/05/2012     C2 K  Sergei Schmalz, Krzysztof Kida	May 01
2283 01/05/2012     C2 D  Zhijian Xu				May 01
2284 12/05/2012     C3 K  Salil Mulye, S Schmalz, S Liwo	May 12
2285 14/05/2012     C2 K  Rob Matson				May 14
2286 15/05/2012     C2 K  M Uchina, S Liwo, R Reszelewski	May 15
2287 15/05/2012     C3 K  Salil Mulye				May 15
2288 16/05/2012     C2 K  Bo Zhou				May 16
2289 16/05/2012     C2 K  Masanori Uchina			May 16
2290 17/05/2012     C2 K  Krzysztof Kida			May 17
2292 18/05/2012     C2 K  Bo Zhou				May 18	Also C3
2293 18/05/2012     C2 K  Krzysztof Kida			May 18
2294 20/05/2012     C2 K  Bo Zhou				May 21
2295 25/05/2012     C3 D  Bo Zhou				May 25
2296 24/05/2012     C2 K  Sergei Schmalz			May 25
2297 26/05/2012     C3 K  Bo Zhou				May 26
2298 26/05/2012     C2 K  Hanjie Tan				May 26
2299 27/05/2012     C2 K  Sergei Schmalz			May 27
2300 29/05/2012     C3 K  Zhijian Xu				May 29
2301 27/05/2012     C2 K  Bo Zhou				May 30
2302 02/06/2012     C3 K  Sergei Schmalz			Jun 02
2303 02/06/2012     C2 K  Sergei Schmalz			Jun 02
2304 06/06/2012     C3 K  Bo Zhou				Jun 06
2305 06/06/2012     C2 K  Krzysztof Kida			Jun 06
2306 07/06/2012     C3 K  Sergei Schmalz			Jun 07
2307 07/06/2012     C2 K  Bo Zhou				Jun 07
2308 08/06/2012     C2 K  Zhijian Xu				Jun 08
2309 08/06/2012     C2 K  Azusa Nakano				Jun 08
2310 09/06/2012     C3 K  Bo Zhou				Jun 09
2311 09/06/2012     C3 K  Szymon Liwo				Jun 09
2312 10/06/2012     C2 K  Sergei Schmalz			Jun 10
2313 10/06/2012     C3 K  Bo Zhou				Jun 11
2314 13/06/2012     C2 K  Krzysztof Kida			Jun 13
2315 13/06/2012     C3 K  Masanori Uchina			Jun 13
2316 13/06/2012     C2 K  Sergei Schmalz			Jun 13
2324 14/06/2012     C2 K  Sergei Schmalz			Jun 14
2317 16/06/2012     C2 K  Sergei Schmalz			Jun 16
P    16/06/2012     C2 K  Sergei Schmalz			Jun 16
2318 23/06/2012     C2 K  Krzysztof Kida, Sergei Schmalz	Jun 23
2319 23/06/2012     C2 K  Sergei Schmalz			Jun 23
2320 24/06/2012     C2 K  Zhijian Xu, Sergei Schmalz		Jun 24
2321 24/06/2012     C2 K  Zhijian Xu				Jun 24
2322 26/06/2012     C3 K  Sergey Shurpakov			Jun 26
2323 27/06/2012     C2 K  Sergei Schmalz			Jun 27
     30/06/2012     C2 O  Rainer Kracht				Jun 30 = 1997 J6 = 2001 D1 = 2004 X7 = 2008 S2
XC82 02/07/2012     C2 K  Sergey Shurpakov			Jul 02
2325 03/07/2012     C2 K  Sergei Schmalz			Jul 03
2326 04/07/2012     C3 K  Sergei Schmalz			Jul 04
2327 07/07/2012     C3 K  Sergei Schmalz, Masanori Uchina	Jul 07
2328 08/07/2012     C3 K  Zhijian Xu				Jul 08
P    09/07/2012     C3 K  Sergei Schmalz			Jul 09
2329 11/07/2012     C3 K  Zhijian Xu				Jul 11
P    12/07/2012     C3 K  Zhijian Xu				Jul 12
P    13/07/2012     C3 K  Bo Zhou				Jul 13
2330 13/07/2012     C3 K  Krzysztof Kida			Jul 13
2331 14/07/2012 N1  C3 K  S Schmalz, K Kida, P Sun		Jul 14
2332 15/07/2012 96B C2 Y  Liang Liu				Jul 15 = 96P/Machholz fragment
2333 15/07/2012     C2 Y  Prafull Sharma			Jul 15 = 96P/Machholz fragment
XC83 15/07/2012     C2 K? Sergei Schmalz			Jul 16
2334 19/07/2012     C3 K  Pedro Maysonet			Jul 19
2335 19/07/2012     C3 K  Salil Mulye				Jul 19
2336 21/07/2012     C2 Y  Peiyuan Sun				Jul 21
2337 21/07/2012     C3 K  Pedro Maysonet			Jul 21
2338 25/07/2012     C3 K  Peiyuan Sun			 	Jul 25
2339 28/07/2012     C3 K  Sergei Schmalz			Jul 28
2340 29/07/2012     C3 K  Zhijian Xu, Sergei Schmalz		Jul 29
2341 01/08/2012     C2 Y  Zhijian Xu				Aug 01
2342 01/08/2012     C3 K  Zhijian Xu				Aug 01
2343 01/08/2012     C2 O  Zhijian Xu				Aug 01
2344 02/08/2012     C3 K  Sergei Schmalz			Aug 02
2345 07/08/2012     C3 K  Bo Zhou				Aug 07
2346 07/08/2012     C3 K  Bo Zhou				Aug 07
2347 12/08/2012     C3 K  Sergei Schmalz			Aug 12
2348 13/08/2012     C3 K  Zhijian Xu				Aug 13
2349 14/08/2012     C2 Y  Sergei Schmalz, Tsumugi Kotobuki (1)	Aug 14
2350 18/08/2012     C3 K  Peiyuan Sun				Aug 18
2351 19/08/2012     C3 K  Tsumugi Kotobuki, Sergei Schmalz	Aug 19
     20/08/2012     C2 O  Peiyuan Sun				Aug 20 = 1999 X3 = 2004 E2 = 2008 K10
2352 20/08/2012     C3 K  Szymon Liwo				Aug 20
2353 20/08/2012     C3 K  Sergei Schmalz			Aug 20
2354 21/08/2012     C3 K  Sergei Schmalz			Aug 21
XC84 13/05/2004     C2 R  Bo Zhou				Aug 28
2355 31/08/2012     C2 Y  Zhijian Xu, Szymon Liwo, K Kida	Aug 31
2356 06/09/2012     C3 K  Sergei Schmalz			Sep 06
2357 09/09/2012     C3 K  Zhijian Xu				Sep 09
2358 11/09/2012     C2 R  Pedro Maysonet			Sep 11
2359 17/09/2012     C3 K  Zhijian Xu				Sep 17
2360 17/09/2012     C3 K  Zhijian Xu				Sep 17
2361 17/09/2012     C3 K  Zhijian Xu				Sep 17
2362 18/09/2012     C3 K  Zhijian Xu				Sep 18
2363 18/09/2012     C2 Y  Zhijian Xu				Sep 18
2364 18/09/2012     C3 K  Sergey Shurpakov			Sep 18
2365 18/09/2012     C3 K  Bo Zhou				Sep 18
2366 19/09/2012     C3 K  Zhijian Xu				Sep 19
2367 19/09/2012     C3 K  Liang Liu				Sep 19
2368 20/09/2012     C3 K  Zhijian Xu				Sep 20
54   21/09/2012    H1A K  Alan Watson				Sep 23
55   22/09/2012    H1A K  Alan Watson				Sep 24
2369 28/09/2012     C3 K  Zhijian Xu				Sep 28
2370 29/09/2012     C3 K  Zhijian Xu				Sep 29
2371 01/10/2012     C3 K  Sergey Shurpakov			Oct 01
2372 03/10/2012     C3 K  Krzysztof Kida			Oct 03
2373 03/10/2012     C3 K  Zhijian Xu				Oct 03
2374 05/10/2012     C3 K  Masanori Uchina			Oct 05
2375 12/10/2012     C3 K  Zhijian Xu				Oct 12
2376 13/10/2012     C3 K  Trygve Prestgard			Oct 13  
2377 13/10/2012     C3 K  Peiyuan Sun				Oct 13
2378 13/10/2012     C2 O  Hanjie Tan				Oct 14
2379 21/10/2012     C3 K  Zhijian Xu				Oct 21
2380 21/10/2012     C2 K  Masanori Uchina			Oct 22
2381 22/10/2012     C2 K  Masanori Uchina			Oct 22
2382 23/10/2012     C3 K  Wenjie Gu				Oct 23
2383 23/10/2012     C2 K  Liang Liu, Peiyuan Sun		Oct 23
2384 27/10/2012     C2 K  Peiyuan Sun				Oct 27
2385 29/10/2012     C2 K  Trygve Prestgard			Oct 29
2386 29/10/2012     C2 Y  Zhijian Xu				Oct 29
2387 30/10/2012 U3  C3 K  Szymon Liwo, K Kida, Zhijian Xu	Oct 30 Mistakenly named STEREO on MPEC
2388 03/11/2012     C3 K  Szymon Liwo				Nov 03
2389 08/11/2012     C3 K  Krzysztof Kida, Wenjie Gu		Nov 08
2390 12/11/2012     C2 K  Karl Battams				Nov 12
2391 12/11/2012     C2 K  Karl Battams				Nov 12
2392 13/11/2012     C2 K  Masanori Uchina			Nov 13
2393 13/11/2012     C3 K  Masanori Uchina			Nov 13
2394 14/11/2012     C3 K  Szymon Liwo, K Kida, Zhijian Xu	Nov 14
2395 15/11/2012     C2 K  Szymon Liwo				Nov 15
2396 16/11/2012     C2 K  Krzysztof Kida			Nov 16
2397 16/11/2012     C2 K  Zhijian Xu				Nov 16
U    17/11/2012     C2 R  Pedro Maysonet			Nov 17 = Mercury
2398 18/11/2012     C2 K  Zhijian Xu				Nov 18
2399 18/11/2012     C2 K  Szymon Liwo				Nov 18
2400 19/11/2012     C2 O  Krzysztof Kida			Nov 19
2401 21/11/2012     C2 K  Zhijian Xu, Krzysztof Kida, Wenjie Gu	Nov 21
2402 24/11/2012     C2 K  Masanori Uchina			Nov 24
2403 25/11/2012     C2 K  Zhijian Xu				Nov 25
2404 26/11/2012     C3 K  Wenjie Gu				Nov 26
2405 26/11/2012     C2 K  Masanori Uchina			Nov 26
2406 26/11/2012     C3 K  Zhijian Xu				Nov 27
2407 28/11/2012     C2 K  Zhijian Xu				Nov 28
2408 28/11/2012     C3 K  Szymon Liwo, Krzysztof Kida		Nov 28
U    29/11/2012     C3 O  Bo Zhou				Nov 29
2409 07/11/2012 V4  SW O  Rob Matson				Nov 29 = 273P/Pons-Gambart
2410 02/12/2012     C3 K  Zhijian Xu				Dec 02
U    02/12/2012     C3 K  Bo Zhou				Dec 02
2411 03/12/2012     C2 K  Szymon Liwo				Dec 03
2412 04/12/2012     C2 K  Masanori Uchina			Dec 05
2413 05/12/2012     C3 K  Szymon Liwo				Dec 05
2414 07/12/2012     C2 K  Bo Zhou				Dec 07
2415 08/12/2012     C2 Y  Zhijian Xu				Dec 08
2416 13/12/2012     C2 K  Masanori Uchina			Dec 14
XC85 14/12/2012     C2 K  Masanori Uchina			Dec 14
2417 16/12/2012     C2 K  Zhijian Xu				Dec 16
2418 15/12/2012     C2 K  Masanori Uchina			Dec 16
2419 16/12/2012     C2 K  Masanori Uchina			Dec 16
2420 16/12/2012     C2 K  Masanori Uchina			Dec 16
2421 17/12/2012     C2 Y  Zhijian Xu				Dec 17
2422 16/12/2012     C2 K  Zhijian Xu				Dec 17
2423 17/12/2012     C2 K  Zhijian Xu, Krzysztof Kida		Dec 17
2424 18/12/2012     C2 K  Szymon Liwo, Bo Zhou 			Dec 18
2425 18/12/2012     C2 K  Bo Zhou				Dec 18
2426 20/12/2012     C2 K  Zhijian Xu				Dec 20
2427 21/12/2012     C2 K  Peiyuan Sun				Dec 22
2428 21/12/2012     C2 Y  Zhijian Xu				Dec 22
2429 22/12/2012     C3 K  Masanori Uchina			Dec 22
2430 23/12/2012     C2 K  Zhijian Xu				Dec 23
2431 23/12/2012     C3 K  Masanori Uchina			Dec 23
2432 27/12/2012     C3 K  Zhijian Xu				Dec 27
2433 27/12/2012     C3 K  Zhijian Xu				Dec 27
2434 27/12/2012     C2 K  Zhijian Xu				Dec 27
2439 27/12/2012     C2 K  Bo Zhou				Dec 27
2435 29/12/2012     C2 K  Szymon Liwo				Dec 29
2436 29/12/2012     C3 O  Sergey Shurpakov			Dec 29
2437 31/12/2012     C3 K  Masanori Uchina, Bo Zhou		Dec 31
The column headed Des is the half month or other designation of the comet. The column headed C gives the SOHO instrument (C2 or C3 for the LASCO coronagraphs, SW for SWAN, T1 or T2 for STEREO) that the comet was discovered in. The column headed G indicates if it is a provisional member of the Kreutz group (K), Meyer group (Y), Marsden group (D), Kracht (R) or other comet (O). P in the SOHO number column indicates the discovery is pending, C indicates that it is confirmed, but not yet numbered, U indicates that is was not confirmed, X that it was confirmed, but there were insufficient observations.

Note that my observer count also includes X/ comets which are not counted as confirmed comets by the SOHO team. Where two or more people report discoveries nearly simultaneously, up to the first three observers are credited here. Where discoverers are clearly not following the SOHO or BAA Comet Section guidelines, they are not credited here at all. If initial reports don't include sufficient positions others may also be credited. Man-To Hui has a site listing SOHO comet discoverers though this was down when checked on 2012 June 7. This gives Bo Zhou as the leading discoverer.

Official milestones:
Krzysztof Kida (Poland)    1st discovery
Liang Liu (China)  1st discovery
Prafull Sharma (India)  1st discovery, age 16
Zhijian Xu 100th discovery

It is possible that there are further comets to be found in the archival data, most likely non-group comets, but there may still be some Kreutz comets.


Published by Jonathan Shanklin. Jon Shanklin - jds@ast.cam.ac.uk