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NEO Earth Close-Approaches
Between 1900 A.D. and 2200 A.D.
limited to encounters with
reasonably low uncertainty		     
 
 
 
   
The table below shows 215 close-Earth approaches by NECs (Near-Earth Comets) sorted by date.
Only those close approaches within 0.2 AU are included.
Column headings described below
Object
Close-Approach (CA) Date Ascending
(TDB)
YYYY-mmm-DD HH:MM ± D_HH:MM		CA Distance
Nominal
(LD/AU)		CA Distance
Minimum
(LD/AU)		V
relative
(km/s)		V
infinity
(km/s)		N
sigma		H

(mag)
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
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
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
1P/Halley 1910-May-20 12:49 ± < 00:01 58.9/0.1514 58.9/0.1513 70.56 70.56 1.1e+06 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
23P/Brorsen-Metcalf 1919-Sep-05 20:13 ± < 00:01 77.3/0.1986 77.3/0.1986 31.18 31.18 5.71e+05 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
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) 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
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
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
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
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
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
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
222P/LINEAR 1946-Aug-25 23:04 ±   00:17 75.3/0.1934 75.2/0.1933 13.84 13.84 1.34e+06 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
26P/Grigg-Skjellerup 1947-Apr-12 14:04 ±   00:06 62.0/0.1592 62.0/0.1592 16.56 16.56 3.14e+05 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
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
141P/Machholz 2-A 1957-Aug-23 11:40 ±   00:15 74.5/0.1914 74.5/0.1914 17.27 17.27 3.54e+04 n/a
72D/Denning-Fujikawa 1960-Aug-10 07:34 ±   00:51 59.2/0.1520 59.2/0.1520 18.04 18.04 3.85e+04 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/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
72D/Denning-Fujikawa 1969-Aug-29 08:56 ±   00:43 73.5/0.1890 73.5/0.1888 15.62 15.62 2.45e+04 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
P/2005 JQ5 (Catalina) 1974-Oct-18 13:11 ±   00:32 74.1/0.1904 73.7/0.1895 20.60 20.60 7.74e+05 n/a
26P/Grigg-Skjellerup 1977-Apr-02 10:20 ± < 00:01 70.9/0.1821 70.9/0.1821 16.88 16.88 6.27e+05 n/a
D/1978 R1 (Haneda-Campos) 1978-Oct-10 01:00 ± < 00:01 59.9/0.1539 59.9/0.1539 7.45 7.45 1.4e+04 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
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
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
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
169P/NEAT 1989-Jan-19 18:48 ± < 00:01 64.4/0.1655 64.4/0.1655 22.19 22.19 3.12e+06 n/a
255P/Levy 1991-Jan-21 21:15 ±   07:24 67.5/0.1735 63.9/0.1641 15.63 15.63 3.23e+04 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
45P/Honda-Mrkos-Pajdusakova 1996-Feb-06 01:13 ±   03:16 59.7/0.1533 57.7/0.1484 20.40 20.40 2.48e+05 n/a
182P/LONEOS 1996-Dec-31 08:53 ± < 00:01 63.3/0.1627 63.3/0.1627 11.95 11.95 8.19e+05 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
2P/Encke 1997-Jul-04 20:16 ± < 00:01 74.0/0.1901 74.0/0.1901 31.63 31.63 1.41e+06 n/a
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
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
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
225P/LINEAR 2002-Oct-07 07:07 ± < 00:01 76.7/0.1970 76.7/0.1970 12.85 12.85 7.49e+05 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
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
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
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
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-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-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-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-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-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-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-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-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-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-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-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-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
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-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-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-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-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-Q 2006-May-14 00:28 ±   02:08 27.2/0.0698 26.3/0.0676 14.81 14.81 187 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-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-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-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-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-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-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-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-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-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-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-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-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-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-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-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-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-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-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-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-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-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
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-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-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-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
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-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-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-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-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-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-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-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-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-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-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-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-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-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
189P/NEAT 2007-Jul-13 23:06 ± < 00:01 76.9/0.1977 76.9/0.1977 12.35 12.35 2.18e+06 n/a
P/2003 T12 (SOHO) 2008-Jan-26 22:33 ±   00:02 67.9/0.1744 67.8/0.1743 24.90 24.90 9.17e+03 n/a
206P/Barnard-Boattini 2008-Oct-21 13:23 ± < 00:01 74.1/0.1904 74.1/0.1904 19.66 19.66 7.8e+05 n/a
222P/LINEAR 2009-Aug-05 18:12 ± < 00:01 67.5/0.1734 67.5/0.1734 14.01 14.01 1.19e+06 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 2010-Jan-12 02:35 ± < 00:01 75.6/0.1944 75.6/0.1944 18.92 18.92 2.85e+06 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
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
189P/NEAT 2012-Jul-09 16:10 ± < 00:01 66.9/0.1720 66.9/0.1720 12.47 12.47 1.52e+06 n/a
209P/LINEAR 2014-May-29 07:51 ± < 00:01 21.6/0.0555 21.6/0.0555 16.97 16.97 6.84e+04 n/a
252P/LINEAR 2016-Mar-21 12:39 ±   00:12 13.9/0.0357 13.9/0.0356 10.56 10.55 9.48e+03 n/a
45P/Honda-Mrkos-Pajdusakova 2017-Feb-11 14:44 ±   00:55 31.3/0.0804 30.8/0.0792 23.03 23.03 4.33e+05 n/a
41P/Tuttle-Giacobini-Kresak 2017-Apr-05 13:50 ±   00:03 57.7/0.1482 57.7/0.1482 8.38 8.37 2.84e+05 n/a
46P/Wirtanen 2018-Dec-16 14:49 ±   00:07 30.2/0.0777 30.2/0.0776 10.07 10.07 4.93e+04 n/a
289P/Blanpain 2020-Jan-10 19:06 ±   03:34 34.4/0.0884 33.5/0.0861 12.10 12.10 7.34e+05 20.1
P/2013 CU129 (PANSTARRS) 2023-Apr-07 16:47 ±   01:04 47.4/0.1217 46.9/0.1204 20.10 20.10 1.4e+05 17.3
169P/NEAT 2026-Aug-11 19:33 ± < 00:01 65.1/0.1672 65.1/0.1672 19.90 19.90 3.08e+06 n/a
249P/LINEAR 2029-Nov-03 23:35 ±   00:01 22.2/0.0570 22.2/0.0570 26.93 26.93 3.1e+05 n/a
252P/LINEAR 2032-Mar-15 18:49 ±   00:25 22.8/0.0585 22.7/0.0583 10.32 10.31 7.11e+03 n/a
15P/Finlay 2034-Aug-13 19:51 ±   00:09 71.4/0.1835 71.4/0.1833 15.00 15.00 2e+05 n/a
289P/Blanpain 2035-Nov-03 21:05 ±   19:13 39.8/0.1022 32.2/0.0826 13.26 13.26 4.11e+05 20.1
P/2005 JQ5 (Catalina) 2036-Jun-09 13:05 ±   00:34 18.2/0.0469 18.0/0.0461 17.16 17.16 4.52e+05 n/a
141P/Machholz 2-A 2036-Dec-17 09:29 ±   00:10 48.5/0.1246 48.5/0.1246 18.32 18.32 4.27e+04 n/a
P/2009 WX51 (Catalina) 2037-Apr-18 07:02 ±   12:20 21.6/0.0556 14.7/0.0377 17.65 17.65 1.17e+04 n/a
P/1999 R1 (SOHO) 2039-May-31 14:21 ±   14:00 72.7/0.1868 71.7/0.1843 42.98 42.98 1.09e+03 n/a
207P/NEAT 2047-Feb-06 13:25 ±   00:01 61.0/0.1567 61.0/0.1567 11.14 11.14 2.39e+05 n/a
8P/Tuttle 2048-Dec-28 10:59 ± < 00:01 68.2/0.1751 68.1/0.1751 31.96 31.96 1.96e+05 n/a
P/2003 T12 (SOHO) 2053-Aug-12 17:33 ±   00:05 64.5/0.1656 64.4/0.1655 19.51 19.51 6.86e+03 n/a
73P/Schwassmann-Wachmann 3-G 2054-Aug-14 04:42 ± 1_02:18 57.4/0.1476 48.7/0.1252 16.94 16.94 4.81e+04 n/a
73P/Schwassmann-Wachmann 3-C 2054-Aug-16 16:51 ±   00:04 66.0/0.1696 66.0/0.1695 17.85 17.85 1.41e+05 n/a
169P/NEAT 2056-Jan-15 11:44 ± < 00:01 67.3/0.1729 67.3/0.1729 19.25 19.25 2.81e+06 n/a
P/2005 JQ5 (Catalina) 2058-Jun-28 18:16 ±   00:57 46.1/0.1184 45.9/0.1179 13.51 13.51 2.84e+05 n/a
72D/Denning-Fujikawa 2059-Aug-21 03:36 ±   04:16 66.5/0.1709 66.4/0.1707 17.01 17.01 1.83e+04 n/a
15P/Finlay 2060-Oct-27 06:11 ±   00:28 18.8/0.0483 18.7/0.0480 13.24 13.24 4.24e+04 n/a
7P/Pons-Winnecke 2062-Jun-12 17:44 ±   00:11 65.2/0.1676 65.2/0.1676 16.27 16.27 4.53e+05 n/a
2P/Encke 2063-Jul-07 02:35 ± < 00:01 75.0/0.1928 75.0/0.1928 32.38 32.38 8.32e+05 n/a
289P/Blanpain 2067-Oct-17 16:12 ± 1_22:00 65.3/0.1678 32.7/0.0841 17.91 17.91 1.58e+05 20.1
P/2008 S1 (McNaught) 2068-Jul-17 20:55 ±   02:08 68.3/0.1755 68.0/0.1748 11.26 11.26 2.08e+04 n/a
73P/Schwassmann-Wachmann 3-C 2070-Jun-21 20:51 ±   00:28 48.8/0.1253 48.8/0.1253 11.85 11.85 3.17e+04 n/a
73P/Schwassmann-Wachmann 3 2070-Jul-10 20:04 ±   01:38 47.1/0.1211 47.1/0.1209 11.92 11.91 1.72e+05 n/a
73P/Schwassmann-Wachmann 3-B 2070-Aug-09 23:10 ±   00:30 51.0/0.1310 50.8/0.1306 15.81 15.81 4.86e+04 n/a
73P/Schwassmann-Wachmann 3-R 2070-Aug-12 03:23 ± 2_00:40 52.2/0.1341 42.4/0.1089 16.39 16.39 8.91e+03 n/a
249P/LINEAR 2071-Nov-04 03:01 ±   00:04 23.8/0.0613 23.8/0.0611 27.26 27.25 2.27e+04 n/a
169P/NEAT 2072-Jul-24 13:11 ± < 00:01 75.8/0.1948 75.8/0.1948 26.87 26.87 2.06e+06 n/a
P/2013 CU129 (PANSTARRS) 2072-Aug-10 15:33 ±   03:01 69.8/0.1794 69.4/0.1785 16.43 16.43 4.72e+05 17.3
7P/Pons-Winnecke 2073-Aug-01 13:21 ±   00:08 75.6/0.1943 75.6/0.1943 17.33 17.33 5.53e+05 n/a
249P/LINEAR 2076-Apr-23 10:47 ±   00:03 19.6/0.0505 19.6/0.0504 24.23 24.23 8e+04 n/a
P/2013 CU129 (PANSTARRS) 2077-Mar-28 21:03 ±   02:06 63.1/0.1622 61.5/0.1581 22.67 22.67 1.15e+05 17.3
73P/Schwassmann-Wachmann 3-E 2098-Aug-13 09:27 ±   00:25 65.4/0.1681 65.1/0.1674 17.70 17.69 1.59e+03 n/a
182P/LONEOS 2099-Jan-02 19:26 ±   00:01 74.5/0.1914 74.5/0.1914 10.34 10.34 1.57e+06 n/a
P/1999 RO28 (LONEOS) 2102-Oct-06 13:27 ±   07:22 74.6/0.1916 74.2/0.1906 7.21 7.21 2.73e+04 n/a
P/2003 T12 (SOHO) 2107-Aug-13 20:17 ±   00:24 62.3/0.1600 62.1/0.1596 19.24 19.24 6.25e+03 n/a
73P/Schwassmann-Wachmann 3-B 2109-Jul-20 21:44 ±   01:35 13.9/0.0356 13.5/0.0347 11.95 11.94 142 n/a
72D/Denning-Fujikawa 2114-Oct-19 08:24 ±   04:30 55.2/0.1419 54.9/0.1411 15.01 15.01 2.47e+04 n/a
289P/Blanpain 2115-Feb-06 00:38 ± 2_05:14 69.9/0.1797 27.9/0.0717 17.16 17.16 2.09e+05 20.1
P/2005 JQ5 (Catalina) 2115-May-30 21:28 ±   00:03 59.1/0.1519 59.1/0.1519 21.44 21.44 1.76e+04 n/a
249P/LINEAR 2118-Oct-23 14:49 ±   00:24 55.5/0.1427 55.3/0.1421 22.31 22.31 2.48e+05 n/a
73P/Schwassmann-Wachmann 3-C 2120-May-13 15:03 ±   00:21 55.5/0.1425 55.4/0.1423 13.42 13.41 3.17e+04 n/a
41P/Tuttle-Giacobini-Kresak 2120-May-24 11:18 ±   05:09 37.6/0.0965 36.2/0.0930 13.16 13.16 4.6e+04 n/a
P/2007 T2 (Kowalski) 2120-Jul-10 04:31 ± 1_04:41 62.3/0.1601 39.7/0.1020 23.07 23.07 1.59e+04 n/a
109P/Swift-Tuttle 2126-Aug-05 15:50 ±   00:01 59.7/0.1534 59.7/0.1533 58.34 58.34 4.07e+04 n/a
P/2013 CU129 (PANSTARRS) 2126-Aug-28 07:47 ±   07:01 72.0/0.1849 67.6/0.1736 22.14 22.13 2.21e+05 17.3
222P/LINEAR 2126-Nov-07 21:48 ±   00:04 25.3/0.0649 25.2/0.0649 14.85 14.84 3.85e+05 n/a
8P/Tuttle 2130-Dec-25 20:55 ±   00:04 37.4/0.0961 37.4/0.0960 32.62 32.62 9.29e+04 n/a
P/2013 CU129 (PANSTARRS) 2131-May-11 01:12 ±   22:44 77.4/0.1990 74.4/0.1912 14.40 14.40 1.58e+05 17.3
222P/LINEAR 2131-Sep-18 15:32 ±   00:11 69.9/0.1797 69.9/0.1797 13.58 13.58 1.46e+06 n/a
1P/Halley 2134-May-07 12:15 ± < 00:01 35.6/0.0916 35.6/0.0916 65.28 65.28 7.51e+05 n/a
73P/Schwassmann-Wachmann 3-B 2136-May-08 15:11 ±   07:04 43.0/0.1104 41.4/0.1063 13.88 13.88 1.3e+04 n/a
222P/LINEAR 2136-Jul-15 11:59 ±   00:04 38.3/0.0984 38.3/0.0984 18.41 18.41 1.89e+05 n/a
P/2005 JQ5 (Catalina) 2137-Jul-01 21:59 ±   02:07 44.6/0.1147 44.2/0.1135 13.24 13.23 1.84e+04 n/a
96P/Machholz 1 2139-Jun-14 10:55 ±   00:22 68.8/0.1767 68.7/0.1765 41.67 41.67 1.11e+05 n/a
182P/LONEOS 2139-Dec-24 08:04 ± < 00:01 59.7/0.1533 59.7/0.1533 12.53 12.53 8.49e+05 n/a
7P/Pons-Winnecke 2142-Jun-15 03:25 ±   00:09 68.2/0.1752 68.1/0.1750 12.90 12.90 1.54e+04 n/a
26P/Grigg-Skjellerup 2146-Apr-13 11:00 ±   02:31 27.6/0.0709 27.4/0.0705 14.98 14.98 6.24e+04 n/a
P/2009 WX51 (Catalina) 2150-Apr-10 15:32 ± 1_09:35 37.6/0.0965 36.2/0.0931 17.40 17.39 6.81e+04 n/a
189P/NEAT 2150-Jul-10 21:51 ±   00:23 70.5/0.1812 70.5/0.1812 11.63 11.63 5.28e+05 n/a
141P/Machholz 2-A 2152-Dec-18 18:50 ±   01:16 67.7/0.1740 67.4/0.1731 19.97 19.97 1.5e+04 n/a
P/2008 S1 (McNaught) 2153-Aug-02 21:58 ± 2_14:58 55.7/0.1432 43.8/0.1126 9.56 9.56 4.67e+04 n/a
249P/LINEAR 2155-Nov-06 13:52 ±   00:34 62.1/0.1595 61.8/0.1589 28.35 28.35 2.64e+05 n/a
209P/LINEAR 2158-May-24 07:04 ±   00:06 61.2/0.1572 61.1/0.1570 18.17 18.17 5.99e+05 n/a
P/2005 JQ5 (Catalina) 2159-Oct-27 23:17 ±   00:57 63.4/0.1629 62.6/0.1608 21.43 21.43 1.56e+06 n/a
26P/Grigg-Skjellerup 2161-Mar-08 01:57 ±   03:07 53.0/0.1362 52.6/0.1353 18.00 18.00 3.79e+05 n/a
207P/NEAT 2162-Jan-25 00:23 ±   00:16 64.5/0.1658 64.5/0.1657 10.94 10.94 5.5e+04 n/a
55P/Tempel-Tuttle 2163-Dec-18 05:52 ±   00:08 51.6/0.1325 51.5/0.1324 70.23 70.23 9.16e+04 n/a
73P/Schwassmann-Wachmann 3 2164-Jun-04 04:19 ±   09:16 63.4/0.1628 60.4/0.1552 10.86 10.86 876 n/a
P/2013 CU129 (PANSTARRS) 2165-Aug-21 21:21 ±   04:28 31.1/0.0800 29.5/0.0759 19.53 19.53 8.28e+04 17.3
141P/Machholz 2-A 2168-Nov-24 13:33 ±   02:18 38.8/0.0996 38.7/0.0996 16.88 16.88 2.79e+04 n/a
169P/NEAT 2169-Jan-30 20:48 ± < 00:01 67.2/0.1725 67.1/0.1725 26.67 26.67 1.47e+06 n/a
P/2013 CU129 (PANSTARRS) 2170-Jul-16 04:14 ±   10:55 70.9/0.1822 69.5/0.1786 13.30 13.30 8.55e+04 17.3
2P/Encke 2172-Jun-29 09:46 ±   00:03 67.5/0.1736 67.5/0.1735 26.25 26.25 2.31e+05 n/a
2P/Encke 2178-Nov-05 14:21 ±   00:05 77.3/0.1985 77.2/0.1984 32.72 32.72 1.54e+06 n/a
P/2013 CU129 (PANSTARRS) 2180-Apr-19 21:01 ±   02:12 41.6/0.1068 40.9/0.1051 14.83 14.83 2.11e+05 17.3
P/2005 JQ5 (Catalina) 2181-Oct-03 07:05 ±   03:37 45.5/0.1170 44.6/0.1146 13.79 13.79 1.34e+06 n/a
207P/NEAT 2185-Feb-27 16:04 ±   00:04 72.9/0.1873 72.9/0.1872 17.75 17.75 1.57e+05 n/a
169P/NEAT 2185-Jul-26 11:51 ± < 00:01 46.3/0.1189 46.3/0.1189 25.86 25.86 1.03e+06 n/a
197P/LINEAR 2186-Jun-12 01:47 ±   02:13 61.4/0.1577 60.6/0.1556 15.16 15.16 8.38e+03 n/a
141P/Machholz 2-A 2189-Dec-08 16:35 ±   03:30 62.7/0.1612 62.4/0.1604 19.04 19.04 1.95e+04 n/a
73P/Schwassmann-Wachmann 3 2190-Jul-26 14:09 ±   12:56 50.2/0.1291 50.0/0.1285 15.18 15.18 9.42e+03 n/a
72D/Denning-Fujikawa 2190-Nov-23 10:06 ±   18:13 36.3/0.0933 33.6/0.0864 17.13 17.12 5.45e+04 n/a
96P/Machholz 1 2192-Jun-08 21:34 ±   07:52 77.1/0.1980 69.4/0.1783 38.45 38.45 5.64e+04 n/a
169P/NEAT 2194-Jan-30 20:10 ± < 00:01 39.4/0.1012 39.4/0.1012 25.19 25.19 1.03e+06 n/a
73P/Schwassmann-Wachmann 3-B 2196-Jul-27 15:59 ±   14:15 37.1/0.0953 33.0/0.0847 14.79 14.79 3.2e+04 n/a

  Column Headings Description
 
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).
CA Distance (LD,AU)  The most likely (Nominal) and minimum possible (Minimum) close-approach distances (Earth center to NEO center) 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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