Are listed the 100 comets that in the past are more approached to the Earth

OGGETTO	DATA DI MASSIMO AVVICINAMENTO (TDB) YYYY-mmm-DD HH:MM ± D_HH:MM	DISTANZA MINIMA RAGGIUNTA  (LD/AU)	DISTANZA MINIMA POSSIBILE TEORICA (LD/AU)	V relativa (km/s)	V infinita (km/s)	N sigma	H (mag
P/1999 J6 (SOHO)	1999-Jun-12 05:23 ± 00:27	4.7/0.0121	3.7/0.0096	42.92	42.91	15.1	n/a
289P/Blanpain	2003-Dec-11 23:18 ± < 00:01	9.7/0.0249	9.7/0.0249	9.05	9.03	1.2e+05	20.1
7P/Pons-Winnecke	1927-Jun-26 19:36 ± < 00:01	15.3/0.0394	15.3/0.0394	13.91	13.90	2.73e+05	n/a
P/1999 R1 (SOHO)	1947-Apr-11 03:31 ± 11:08	18.3/0.0471	17.8/0.0456	40.50	40.50	194	n/a
73P/Schwassmann-Wachmann 3	1930-Jun-02 02:32 ± 01:01	19.5/0.0501	19.1/0.0490	14.26	14.26	525	n/a
73P/Schwassmann-Wachmann 3-AX	2006-May-17 08:24 ± 08:01	19.5/0.0502	13.4/0.0344	14.17	14.17	7.24	n/a
73P/Schwassmann-Wachmann 3-E	2006-May-17 16:04 ± 00:01	19.6/0.0505	19.6/0.0504	14.13	14.12	3.1e+04	n/a
73P/Schwassmann-Wachmann 3-V	2006-May-12 11:08 ± 1_16:25	20.5/0.0527	16.3/0.0419	15.11	15.11	16.8	n/a
73P/Schwassmann-Wachmann 3-AA	2006-May-16 12:03 ± 00:27	20.9/0.0536	20.6/0.0530	14.10	14.10	355	n/a
73P/Schwassmann-Wachmann 3-U	2006-May-16 11:04 ± 01:21	21.5/0.0551	21.2/0.0544	14.25	14.24	532	n/a
73P/Schwassmann-Wachmann 3-BM	2006-May-16 07:42 ± 05:26	21.5/0.0552	12.8/0.0328	14.15	14.15	25.5	n/a
73P/Schwassmann-Wachmann 3-AG	2006-May-16 12:34 ± 00:05	21.6/0.0555	21.5/0.0553	14.34	14.33	799	n/a
73P/Schwassmann-Wachmann 3-AY	2006-May-15 22:34 ± 01:04	22.0/0.0565	19.8/0.0510	14.10	14.09	83.2	n/a
73P/Schwassmann-Wachmann 3-BK	2006-May-16 05:09 ± 00:05	22.0/0.0565	21.6/0.0556	14.32	14.32	282	n/a
73P/Schwassmann-Wachmann 3-BL	2006-May-16 05:52 ± 04:57	22.1/0.0569	13.5/0.0346	14.39	14.39	28.8	n/a
73P/Schwassmann-Wachmann 3-BG	2006-May-15 20:55 ± 01:59	22.3/0.0573	18.3/0.0470	14.27	14.27	37.5	n/a
73P/Schwassmann-Wachmann 3-AB	2006-May-15 19:46 ± < 00:01	22.7/0.0583	22.6/0.0582	14.38	14.38	1.99e+03	n/a
73P/Schwassmann-Wachmann 3-BI	2006-May-15 16:28 ± 00:04	22.7/0.0583	22.0/0.0566	14.26	14.26	152	n/a
73P/Schwassmann-Wachmann 3-AI	2006-May-15 21:50 ± 00:08	22.8/0.0586	22.4/0.0577	14.48	14.47	302	n/a
73P/Schwassmann-Wachmann 3-BJ	2006-May-15 18:27 ± 00:44	22.8/0.0586	21.4/0.0550	14.39	14.38	99.8	n/a
73P/Schwassmann-Wachmann 3-AC	2006-May-15 19:51 ± 00:01	22.9/0.0587	22.8/0.0586	14.45	14.44	1.54e+03	n/a
C/1999 X3 (SOHO)	2000-Jan-13 02:31 ± 01:06	22.9/0.0589	18.8/0.0482	41.61	41.61	40.2	n/a
73P/Schwassmann-Wachmann 3-BH	2006-May-15 13:43 ± 03:31	22.9/0.0590	15.2/0.0390	14.28	14.27	30.8	n/a
73P/Schwassmann-Wachmann 3-T	2006-May-16 07:15 ± 00:49	23.0/0.0592	22.6/0.0582	14.63	14.62	1.01e+03	n/a
73P/Schwassmann-Wachmann 3-AD	2006-May-15 23:40 ± 1_07:05	23.0/0.0592	11.3/0.0290	14.38	14.38	16.6	n/a
73P/Schwassmann-Wachmann 3-X	2006-May-15 13:45 ± < 00:01	23.3/0.0600	23.3/0.0599	14.48	14.48	3.83e+03	n/a
45P/Honda-Mrkos-Pajdusakova	2011-Aug-15 08:16 ± < 00:01	23.4/0.0601	23.4/0.0601	24.61	24.61	6.21e+05	n/a
73P/Schwassmann-Wachmann 3-AK	2006-May-15 01:36 ± 23:39	23.4/0.0602	12.6/0.0324	14.54	14.54	5.81	n/a
73P/Schwassmann-Wachmann 3-Y	2006-May-16 06:39 ± 01:09	23.5/0.0603	22.9/0.0589	14.74	14.74	808	n/a
73P/Schwassmann-Wachmann 3-AH	2006-May-16 04:25 ± 16:00	23.5/0.0605	18.3/0.0471	14.33	14.32	16.8	n/a
73P/Schwassmann-Wachmann 3-AM	2006-May-13 19:15 ± 15:10	23.7/0.0609	19.6/0.0505	14.83	14.83	16.1	n/a
73P/Schwassmann-Wachmann 3-W	2006-May-15 11:18 ± 00:24	23.7/0.0610	23.5/0.0605	14.54	14.54	805	n/a
73P/Schwassmann-Wachmann 3-AL	2006-May-15 08:17 ± 02:28	24.0/0.0615	22.1/0.0569	14.60	14.60	36	n/a
73P/Schwassmann-Wachmann 3-BP	2006-May-15 00:37 ± < 00:01	24.1/0.0619	23.6/0.0606	14.37	14.37	103	n/a
73P/Schwassmann-Wachmann 3-AE	2006-May-15 03:46 ± 00:18	24.3/0.0624	24.1/0.0618	14.58	14.58	274	n/a
73P/Schwassmann-Wachmann 3-L	2006-May-15 02:44 ± < 00:01	24.3/0.0624	24.3/0.0624	14.56	14.55	6.44e+03	n/a
73P/Schwassmann-Wachmann 3-AN	2006-May-15 01:44 ± 00:03	24.3/0.0625	24.2/0.0621	14.57	14.56	601	n/a
73P/Schwassmann-Wachmann 3-BQ	2006-May-15 00:10 ± 00:02	24.4/0.0627	23.8/0.0611	14.54	14.54	178	n/a
73P/Schwassmann-Wachmann 3-BO	2006-May-14 23:13 ± < 00:01	24.5/0.0629	24.4/0.0627	14.53	14.53	687	n/a
73P/Schwassmann-Wachmann 3-N	2006-May-14 23:27 ± < 00:01	24.5/0.0629	24.5/0.0629	14.54	14.54	5.17e+03	n/a
73P/Schwassmann-Wachmann 3-H	2006-May-14 23:54 ± < 00:01	24.5/0.0629	24.5/0.0629	14.56	14.56	1.78e+04	n/a
73P/Schwassmann-Wachmann 3-M	2006-May-14 22:54 ± 00:01	24.6/0.0631	24.5/0.0630	14.57	14.57	2.01e+03	n/a
73P/Schwassmann-Wachmann 3-K	2006-May-14 20:54 ± 00:05	24.7/0.0635	24.7/0.0634	14.58	14.58	5e+03	n/a
73P/Schwassmann-Wachmann 3-Z	2006-May-15 09:45 ± 07:50	24.7/0.0636	22.0/0.0566	14.47	14.46	50.2	n/a
73P/Schwassmann-Wachmann 3-BN	2006-May-14 19:57 ± < 00:01	24.8/0.0636	24.2/0.0622	14.56	14.56	97.5	n/a
73P/Schwassmann-Wachmann 3-R	2006-May-14 19:20 ± < 00:01	24.9/0.0640	24.9/0.0639	14.60	14.60	5.78e+03	n/a
73P/Schwassmann-Wachmann 3-J	2006-May-14 15:58 ± 00:22	25.0/0.0643	25.0/0.0641	14.59	14.59	2.2e+03	n/a
73P/Schwassmann-Wachmann 3-AU	2006-May-14 15:13 ± 00:03	25.3/0.0649	25.2/0.0646	14.61	14.61	868	n/a
73P/Schwassmann-Wachmann 3-G	2006-May-14 15:05 ± < 00:01	25.3/0.0649	25.3/0.0649	14.62	14.62	2.61e+04	n/a
73P/Schwassmann-Wachmann 3-B	2006-May-14 06:40 ± < 00:01	26.0/0.0669	26.0/0.0669	14.69	14.68	1.27e+06	n/a
73P/Schwassmann-Wachmann 3-AQ	2006-May-14 06:46 ± < 00:01	26.1/0.0671	26.1/0.0670	14.73	14.72	1.57e+03	n/a
73P/Schwassmann-Wachmann 3-AW	2006-May-14 00:16 ± 00:15	26.2/0.0673	25.2/0.0648	14.46	14.46	158	n/a
73P/Schwassmann-Wachmann 3-P	2006-May-14 04:54 ± 00:07	26.3/0.0677	26.3/0.0675	14.73	14.73	977	n/a
73P/Schwassmann-Wachmann 3-AJ	2006-May-16 10:07 ± 01:06	26.5/0.0681	25.5/0.0655	15.98	15.98	63	n/a
73P/Schwassmann-Wachmann 3-AO	2006-May-14 09:21 ± 02:52	26.5/0.0682	24.4/0.0628	14.64	14.64	29.5	n/a
73P/Schwassmann-Wachmann 3-Q	2006-May-14 00:28 ± 02:08	27.2/0.0698	26.3/0.0676	14.81	14.81	187	n/a
252P/LINEAR	1921-Mar-09 12:23 ± 00:14	30.0/0.0770	30.0/0.0770	10.62	10.61	2.34e+04	n/a
73P/Schwassmann-Wachmann 3-BB	2006-May-12 22:11 ± 02:14	30.0/0.0771	21.9/0.0563	14.71	14.71	15.9	n/a
73P/Schwassmann-Wachmann 3-BF	2006-May-12 13:00 ± 00:01	30.0/0.0771	29.5/0.0757	14.88	14.88	267	n/a
73P/Schwassmann-Wachmann 3-AF	2006-May-12 09:29 ± 04:11	30.5/0.0783	27.3/0.0701	14.76	14.75	23.4	n/a
73P/Schwassmann-Wachmann 3-BE	2006-May-12 05:46 ± 00:10	30.6/0.0786	28.8/0.0740	14.90	14.90	116	n/a
73P/Schwassmann-Wachmann 3-C	2006-May-12 10:22 ± < 00:01	30.6/0.0786	30.6/0.0786	15.04	15.04	2.42e+06	n/a
P/2005 JQ5 (Catalina)	1961-Jun-01 10:59 ± 00:48	30.9/0.0794	30.5/0.0784	18.90	18.89	1.85e+06	n/a
P/2005 JQ5 (Catalina)	1904-Jun-07 09:27 ± 02:39	31.0/0.0795	29.8/0.0765	17.44	17.44	1.85e+06	n/a
73P/Schwassmann-Wachmann 3-AR	2006-May-12 05:55 ± 00:14	31.2/0.0803	30.6/0.0786	15.11	15.11	311	n/a
73P/Schwassmann-Wachmann 3-AZ	2006-May-11 16:29 ± 00:14	32.0/0.0822	29.6/0.0760	14.88	14.88	119	n/a
73P/Schwassmann-Wachmann 3	2006-May-11 21:12 ± 00:01	32.1/0.0824	32.1/0.0824	15.15	15.15	5.2e+04	n/a
73P/Schwassmann-Wachmann 3-AP	2006-May-11 22:43 ± < 00:01	32.2/0.0827	32.0/0.0823	15.27	15.27	748	n/a
73P/Schwassmann-Wachmann 3-BC	2006-May-11 22:21 ± < 00:01	32.2/0.0827	31.8/0.0817	15.26	15.26	191	n/a
73P/Schwassmann-Wachmann 3-BA	2006-May-11 13:49 ± 00:12	32.7/0.0840	30.4/0.0782	15.02	15.02	130	n/a
73P/Schwassmann-Wachmann 3-AV	2006-May-11 13:38 ± 00:21	32.9/0.0846	31.9/0.0819	15.22	15.22	252	n/a
73P/Schwassmann-Wachmann 3-BD	2006-May-11 21:53 ± 11:11	33.7/0.0867	0.04/0.00010	14.79	14.78	3	n/a
73P/Schwassmann-Wachmann 3-AS	2006-May-11 07:51 ± < 00:01	33.9/0.0872	33.6/0.0863	15.40	15.40	283	n/a
73P/Schwassmann-Wachmann 3-AT	2006-May-11 03:24 ± 00:01	33.9/0.0872	33.7/0.0865	15.20	15.20	1.11e+03	n/a
73P/Schwassmann-Wachmann 3-BR	2006-May-11 00:00 ± < 00:01	34.3/0.0880	34.1/0.0876	15.20	15.20	1.19e+03	n/a
73P/Schwassmann-Wachmann 3-BS	2006-May-10 10:01 ± 00:02	36.5/0.0938	33.6/0.0864	15.56	15.56	98.9	n/a
252P/LINEAR	2000-Mar-04 15:48 ± 00:01	37.9/0.0974	37.9/0.0974	10.85	10.85	4.97e+04	n/a
249P/LINEAR	1997-Apr-22 22:34 ± < 00:01	38.1/0.0979	38.1/0.0979	24.43	24.43	2.35e+05	n/a
P/2005 JQ5 (Catalina)	1926-Jun-17 19:41 ± 02:06	38.2/0.0981	37.6/0.0966	14.79	14.78	2.18e+06	n/a
P/2013 CU129 (PANSTARRS)	1954-Apr-30 11:50 ± 20:33	39.8/0.1022	39.3/0.1009	16.70	16.70	2.3e+05	17.3
P/2005 JQ5 (Catalina)	2005-Jun-27 13:15 ± < 00:01	40.2/0.1034	40.2/0.1034	13.54	13.54	5.16e+06	n/a
7P/Pons-Winnecke	1939-Jul-01 07:42 ± < 00:01	41.8/0.1073	41.8/0.1073	14.08	14.08	6.7e+05	n/a
C/1999 X3 (SOHO)	1983-Jan-09 18:15 ± 04:41	42.0/0.1079	29.6/0.0762	39.55	39.55	31.1	n/a
222P/LINEAR	1941-Nov-11 17:13 ± 00:05	42.6/0.1094	42.5/0.1093	18.64	18.64	1.12e+05	n/a
182P/LONEOS	1986-Dec-18 23:28 ± < 00:01	45.5/0.1169	45.5/0.1169	15.03	15.02	7.54e+05	n/a
252P/LINEAR	1900-May-05 08:30 ± 00:08	46.3/0.1190	46.2/0.1188	14.59	14.59	5.29e+04	n/a
103P/Hartley 2	2010-Oct-20 17:33 ± < 00:01	47.0/0.1209	47.0/0.1209	11.88	11.88	1.45e+06	n/a
P/2005 JQ5 (Catalina)	1939-Oct-11 21:33 ± 00:22	49.0/0.1259	48.9/0.1256	17.78	17.78	7.36e+05	n/a
C/1999 X3 (SOHO)	1970-Feb-23 01:57 ± 1_08:50	49.3/0.1268	25.3/0.0650	46.57	46.57	8.71	n/a
182P/LONEOS	1991-Dec-26 18:10 ± < 00:01	49.4/0.1270	49.4/0.1270	12.91	12.91	8.14e+05	n/a
P/2009 WX51 (Catalina)	1923-Apr-09 09:28 ± 2_05:26	49.7/0.1277	44.5/0.1143	13.99	13.99	4.04e+05	n/a
207P/NEAT	1908-Dec-03 14:29 ± 00:03	52.4/0.1346	52.4/0.1346	14.41	14.41	1.87e+05	n/a
289P/Blanpain	1987-Oct-23 03:55 ± 1_02:09	52.5/0.1348	43.7/0.1122	15.61	15.61	1.36e+06	20.1
7P/Pons-Winnecke	1921-Jun-12 19:05 ± < 00:01	54.9/0.1412	54.9/0.1412	14.26	14.26	3.45e+05	n/a
P/2009 WX51 (Catalina)	1912-Apr-11 05:00 ± 19:24	56.9/0.1462	55.7/0.1431	14.31	14.31	3.03e+05	n/a
210P/Christensen	1961-Feb-19 05:00 ± 00:05	57.0/0.1465	57.0/0.1464	22.42	22.42	3.08e+05	n/a
P/2009 WX51 (Catalina)	2009-Dec-25 16:19 ± < 00:01	57.0/0.1466	57.0/0.1465	15.94	15.94	9.69e+04	n/a
169P/NEAT	2005-Aug-07 00:29 ± < 00:01	57.4/0.1475	57.4/0.1475	21.25	21.25	2.83e+06	n/a
252P/LINEAR	1984-Feb-03 04:34 ± 00:02	58.0/0.1491	58.0/0.1490	15.09	15.09	2.11e+04	n/a
249P/LINEAR	1955-Apr-23 00:41 ± 00:05	58.7/0.1508	58.7/0.1507	26.66	26.66	4.08e+05	n/a

Close-Approach Date Date and time (TDB) of closest Earth approach distance. "Nominal Date" is given to appropriate precision. The 3-sigma uncertainty in the time is given in the +/- column in days_hours:minutes format (for example, "2_15:23" is 2 days, 15 hours, 23 minutes).
Miss Distance (LD,AU) The most likely (Nominal) and minimum possible (Minimum) miss distances are given in LD (Lunar Distance) and AU. The minimum possible distance is based on the 3-sigma Earth target-plane error ellipse.
V relative (km/s) Object velocity relative to Earth at close-approach in km/s.
V infinity (km/s) Object velocity relative to a massless Earth at close-approach in km/s.
N-sig The factor by which the target-plane error ellipse must be scaled to allow for an Earth grazing impact.
H (Vm) Asteroid absolute V-magnitude (in general, smaller H implies larger asteroid diameter). Undefined for comets.
(AU) Astronomical distance Unit: 1.0 AU is about 1.5x10^8 km (roughly the average distance between the Earth and the Sun).
(LD) Lunar Distance: 1.0 LD is about 3.84x10^5 km or 0.00257 AU (the average distance between the Earth and the Moon).

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