Video Meteor Database - Revised Radiant Analysis

In 2008, a refined automatic meteor shower search has been carried out. It was based on the full data set of the IMO Video Meteor Database until August 2008, containing 359,957 single station meteors. Details were presented at the IMC 2008 and can be found in the corresponding presentation and paper.

Beware that improved analysis results were presented in 2009!

In principle, the search consists of two stages.

• at first, all possible meteor shower radiants are computed for a given solar longitude interval with the RadFind tool
• then, nearby radiants from consecutive solar longitude intervals are linked in search for meteor showers with the StrmFind tool

Whereas the RadFind tool has undergone a major revision since the last analysis in 2006 (see the IMC presentation for details), the algorithm of the StrmFind tool was not yet modified. There is a good chance to detect meteor showers in the radiant list that were not yet noticed by the automatic shower search. For this reason, the preliminary results of the first stage are published once more.

The following table contains a link for each solar longitude. Each file contains the number of meteors that were available in the given solar longitude interval, as well as details of the individual radiants:

• the position and velocity at infinity of the radiant
• the accumulated probability mass
• the raw meteor count (splitted into the first and second interval half)
• the meteor count corrected for observing geometry (splitted into the first and secondinterval half)

Beware that only the strongest radiants on top of the list will be real, whereas all weaker ones are only by chance alignments of meteors.

Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
280	312	340	011	040	070	099	129	158	188	218	249
281	313	341	012	041	071	100	130	159	189	219	250
282	314	342	013	042	072	101	131	160	190	220	251
283	315	343	014	043	073	102	132	161	191	221	252
284	316	344	015	044	074	103	133	162	192	222	253
285	317	345	016	045	075	104	134	163	193	223	254
286	318	346	017	046	076	105	135	164	194	224	255
287	319	347	018	047	077	106	136	165	195	225	256
288	320	348	019	048	078	107	137	166	196	226	257
289	321	349	020	049	079	108	138	167	197	227	258
290	322	350	021	050	080	109	139	168	198	228	259
291	323	351	022	051	081	110	140	169	199	229	260
292	324	352	023	052	082	111	141	170	200	230	261
293	325	353	024	053	083	112	142	171	201	231	262
294	326	354	025	054	084	113	143	172	202	232	263
295	327	355	026	055	085	114	144	173	203	233	264
296	328	356	027	056	086	115	145	174	204	234	265
297	329	357	028	057	087	116	146	175	205	235	266
298	330	358	029	058	088	117	147	176	206	236	267
299	331	359	030	059	089	118	148	177	207	237	268
300	332	000	031	060	090	119	149	178	208	238	269
301	333	001	032	061	091	120	150	179	209	239	270
302	334	002	033	062	092	121	151	180	210	240	271
303	335	003	034	063	093	122	152	181	211	241	272
304	336	004	035	064	094	123	153	182	212	242	273
305	337	005	036	065	095	124	154	183	213	243	274
306	338	006	037	066	096	125	155	184	214	244	275
307	339	007	038	067	097	126	156	185	215	245	276
308		008	039	068	098	127	157	186	216	246	277
309		009		069		128		187	217	247	278
310		010								248	279
311

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