지구를 위협하는 작은 천체들 NEOs

잘 느끼지 못할 수도 있지만,
우리는 항상 생존의 위협을 받으며 살아가고 있다.
인간.
만물의 영장이라고 하지만 자연의 한 피조물일 수 밖에..

이런 위협에는 여러가지가 있겠지만,
그 중에는 우리 뜻대로 되지 않는 자연의 섭리인 것들도 많다.
예를 들어 화산활동, 지진, 쓰나미 등등
이제는 인간의 지적 수준이 높아짐에 따라서
이런 지구의 위협 외에도
우주로 눈을 돌려 우주의 종말, 또는 지구 자체의 종말까지 걱정하고 있다.

다큐멘타리를 보면 공룡의 멸종, 소행성의 충돌 등의 주제가 심심치 않게 나온다.
사실 이런 위협들은 과학자들보다는
공상과학소설을 쓰는 소설가들이 먼저 생각해 냈다고도 할 수 있다.
요즘에는 과학자들의 좀 더 사실적인 데이터에
영화 감독들의 상상력과 그래픽이 더해져 지구 종말에 관한 영화도 많이 나왔고,
우리가 지구를 살릴 수 있는 방법도 여럿 제시되었다.

그럼 이런 위협은 실제로 존재하는 것일까?
예, 아니오 로 대답하라면 대답은 "예"이다.

영화나 다큐멘타리에서 자주 보듯이 지구 종말의 위협이 되는 것은
태양계를 떠돌아 다니던 돌덩이들이다.
그렇다고 우주를 막 떠돌아 다니던 돌덩이들이 위협이 되는 것은 아니다.
태양계는 어느정도 물리법칙을 따르고 있기 때문에
특별한 일이 없는 한 대부분의 돌덩이들은 지구에 위협이 되지 못한다.
그들중 지구에 가깝거나, 그 궤도가 지구 궤도와 겹치는 것들을 따로 분류한다.
이들을 NEOs라고 한다.
(여기서 혜성은 뺀다. 혜성은 소행성만큼 수적으로나 충돌가능성으로나 확률이 아주 적다.)
또한 이들(NEOs)중에서 지구에 아주 가까이 접근하는 소행성을 "PHA"라고 한다.
1993년까지 PHA는 166개였으나, 이 중 1999년에 0.2AU 이내에 근접한 소행성들은
지구와의 충돌 확률이 모두 10억 분의 1 이하였다.
 
아래에는 NASA에서 제공하는 NEOs의 데이터를 첨부한다.
이 데이터는 미래(2007년 10월 1일 ~ 2200년)에 5LD 이내로 접근하는 NEOs의 목록이다.
1LD는 지구-달까지의 거리이다.

The table below shows 157 close-Earth approaches by NEOs (Near-Earth Objects) sorted by date. Only those close approaches within 5 LD (Lunar Distances) occurring on or after 2007-Oct-01 UT are included.

Column headings described below Object Close-Approach Date  (TDB) YYYY-mmm-DD HH:MM ± D_HH:MM Miss Distance Nominal (LD/AU) Miss Distance Minimum (LD/AU) V relative (km/s) V infinity (km/s) N sigma H (mag) ref class       (2005 VN) 2008-Oct-29 19:04 ± 1_08:03 4.1/0.0104 3.6/0.0092 11.91 11.88 1.11e+05 22.8 6 APO*       (1999 AQ10) 2009-Feb-18 15:28 ± < 00:01 4.4/0.0113 4.4/0.0112 8.27 8.24 4.98e+04 20.3 33 ATE*       (2005 YU55) 2011-Nov-08 23:49 ±   02:53 1.4/0.0036 0.4/0.0010 13.72 13.67 225 22.0 6 APO*       (2000 YA) 2011-Dec-26 04:36 ±   06:45 2.9/0.0074 2.9/0.0074 13.64 13.61 1.13e+05 23.7 17 APO*       (2007 EO88) 2013-Mar-18 21:44 ±   02:16 4.7/0.0121 2.7/0.0070 10.63 10.61 1.28e+05 26.4 6 APO*       (2001 AV43) 2013-Nov-18 15:58 ±   06:25 2.9/0.0074 2.7/0.0068 3.61 3.51 7.02e+03 24.4 10 APO*       (2004 BL86) 2015-Jan-26 16:10 ±   00:04 3.1/0.0080 3.1/0.0080 15.67 15.65 1.43e+04 18.8 17 APO*       (2004 FG29) 2018-Apr-02 13:22 ±   01:02 4.1/0.0106 3.9/0.0100 14.96 14.94 2.78e+03 25.8 3 ATE*       (2001 GP2) 2020-Oct-03 16:24 ± 2_04:11 3.1/0.0080 0.5/0.0013 2.49 2.35 2.27e+03 26.9 11 APO*       (2004 UT1) 2022-Oct-29 07:54 ±   00:05 3.1/0.0081 2.3/0.0059 6.43 6.38 1.25e+04 26.4 3 ATE*       (1998 HH49) 2023-Oct-17 00:34 ±   00:08 3.1/0.0079 3.0/0.0076 14.79 14.76 4.93e+03 21.3 7 APO*       (2006 WB) 2024-Nov-26 18:01 ± < 00:01 2.3/0.0060 2.3/0.0059 4.20 4.10 7.47e+03 22.8 13 ATE*       (2007 DB61) 2026-Feb-20 10:39 ± 2_00:44 5.0/0.0128 5.0/0.0128 9.32 9.30 3.83e+04 23.4 6 ATE*       (2003 LN6) 2026-Jun-19 17:18 ± 1_00:48 3.6/0.0094 3.6/0.0093 3.98 3.91 3.34e+05 24.5 11 ATE* 137108 (1999 AN10) 2027-Aug-07 07:10 ± < 00:01 1.0/0.0026 1.0/0.0026 26.28 26.25 1.55e+03 17.8 50 APO* 153814 (2001 WN5) 2028-Jun-26 05:20 ±   00:02 0.7/0.0017 0.6/0.0017 10.24 10.09 2.57e+03 18.2 11 APO* 35396 (1997 XF11) 2028-Oct-26 06:43 ± < 00:01 2.4/0.0062 2.4/0.0062 13.92 13.89 6.22e+03 16.9 87 APO*       (2006 SU49) 2029-Jan-28 04:51 ±   00:11 3.2/0.0082 3.2/0.0082 4.90 4.84 790 19.6 35 APO* 99942 Apophis 2029-Apr-13 21:46 ± < 00:01 0.10/0.00026 0.09/0.00024 7.42 5.84 64.8 19.7 139 ATE*       (2006 HE2) 2029-Sep-30 15:15 ±   14:22 2.0/0.0052 1.7/0.0044 5.02 4.92 7.01e+03 26.5 2 APO*       (2004 TD10) 2032-Oct-25 21:58 ± 1_11:54 4.8/0.0124 4.5/0.0116 9.95 9.93 1.25e+05 22.0 11 ATE*       (2003 RU11) 2034-Sep-17 14:50 ±   00:18 3.8/0.0097 3.7/0.0095 4.67 4.61 1.57e+05 25.6 14 ATE*       (2005 TA) 2034-Oct-04 18:08 ± 2_16:14 1.1/0.0029 0.6/0.0015 5.07 4.89 1.26e+05 27.2 4 APO*       (2000 QK130) 2036-Mar-15 14:24 ±   00:03 4.4/0.0114 4.4/0.0113 7.56 7.53 626 20.6 22 APO*       (2006 GB) 2037-Mar-22 08:16 ± < 00:01 4.1/0.0105 4.1/0.0105 6.93 6.90 1.24e+05 20.3 32 ATE*       (2002 NY40) 2038-Feb-11 02:09 ± < 00:01 2.8/0.0073 2.8/0.0073 20.55 20.53 8.4e+04 19.2 57 APO*       (1993 KA) 2038-May-18 20:14 ± 2_08:19 3.5/0.0090 1.3/0.0033 4.61 4.54 2.12e+05 26.1 5 APO*       (2004 MD6) 2042-Jun-16 04:14 ±   00:02 3.8/0.0097 3.8/0.0097 21.57 21.56 3.85e+04 20.4 21 ATE*       (2004 FH) 2044-Mar-17 17:11 ±   00:21 4.6/0.0117 4.5/0.0115 6.64 6.61 5.26e+03 26.4 16 ATE*       (2001 AD2) 2046-Apr-03 19:53 ±   00:02 4.4/0.0112 4.3/0.0111 21.94 21.92 5.5e+03 19.1 14 APO*       (2000 LF3) 2046-Jun-14 10:36 ±   13:24 3.1/0.0079 2.7/0.0068 15.13 15.11 6.65e+04 21.6 27 APO* 162162 (1999 DB7) 2048-Feb-28 01:15 ± < 00:01 2.5/0.0065 2.5/0.0065 7.00 6.94 7.71e+04 19.6 16 APO*       (2005 VL1) 2049-Feb-05 04:14 ±   01:07 2.2/0.0056 1.3/0.0033 6.61 6.53 3.58e+03 26.7 8 ATE*       (2004 LV3) 2049-Dec-24 23:23 ±   00:18 4.7/0.0121 4.5/0.0117 20.05 20.04 2.9e+04 18.6 29 APO*       (2006 GU2) 2050-Oct-10 01:26 ± 2_09:49 4.2/0.0108 0.4/0.0011 7.04 7.01 39.4 27.8 1 APO*       (2002 CC14) 2051-Feb-04 18:20 ±   06:47 4.5/0.0116 3.7/0.0095 12.34 12.32 1.5e+04 24.6 4 ATE*       (2005 FN) 2051-Mar-19 13:21 ±   00:37 4.0/0.0104 2.4/0.0060 10.67 10.65 4.5e+04 26.9 3 ATE*  4581 Asclepius 2051-Mar-24 07:59 ±   00:15 4.7/0.0120 4.4/0.0112 11.04 11.02 2.11e+04 20.4 7 APO* 162422 (2000 EV70) 2051-Aug-11 01:47 ±   00:02 4.8/0.0123 4.8/0.0123 16.12 16.11 3.21e+04 20.0 36 APO*       (1998 SD9) 2051-Aug-30 17:13 ± 1_03:51 3.4/0.0088 3.0/0.0078 10.45 10.42 5.32e+03 24.1 6 ATE*       (2004 FU4) 2051-Oct-25 23:32 ±   00:07 3.2/0.0082 3.1/0.0079 13.64 13.62 1.62e+03 18.4 17 APO*       (2002 PN) 2052-Jan-30 04:54 ±   00:14 3.4/0.0088 3.0/0.0078 5.28 5.23 6.48e+03 24.8 11 APO*       (2006 BC10) 2052-Mar-18 07:56 ± 1_02:26 3.3/0.0084 2.0/0.0052 18.85 18.83 4.44e+04 19.4 39 APO*       (2003 WT153) 2052-Sep-05 16:38 ±   16:30 4.8/0.0123 2.3/0.0059 4.81 4.77 1.58e+04 28.0 4 ATE*       (1988 TA) 2053-Oct-01 07:22 ± 1_03:48 3.6/0.0092 2.1/0.0054 13.14 13.12 1.39e+04 20.8 4 APO*       (2005 LU3) 2054-Jun-04 23:46 ± 1_23:33 4.4/0.0112 4.4/0.0112 9.48 9.45 3.72e+04 26.2 3 APO*       (2006 WV1) 2055-Nov-29 16:19 ± 2_06:45 4.7/0.0122 4.4/0.0114 7.23 7.20 7.99e+03 25.9 2 ATE*       (2007 BD) 2056-Jan-16 02:58 ±   10:40 3.1/0.0079 1.4/0.0037 7.49 7.44 1.52e+05 25.6 8 ATE*       (2004 VZ) 2056-Nov-08 11:40 ±   03:19 1.6/0.0041 1.6/0.0040 10.71 10.65 4.3e+03 24.5 4 ATE* 162120 (1998 SH36) 2057-Oct-12 16:37 ±   00:01 4.5/0.0115 4.5/0.0115 17.61 17.60 1.63e+05 20.5 24 APO*  4660 Nereus 2060-Feb-14 06:56 ± < 00:01 3.1/0.0080 3.1/0.0080 6.33 6.28 1.85e+05 18.2 47 APO* 101955 (1999 RQ36) 2060-Sep-23 00:34 ± < 00:01 2.0/0.0050 2.0/0.0050 6.19 6.10 2.41e+05 20.8 63 APO*       (1998 SD9) 2061-Aug-28 22:48 ±   07:11 4.5/0.0115 2.4/0.0061 10.80 10.78 1.06e+03 24.1 6 ATE*       (2000 WC1) 2061-Nov-13 18:16 ± < 00:01 2.3/0.0059 2.3/0.0058 11.45 11.41 5.74e+04 21.8 7 ATE*       (2002 AW) 2064-Oct-04 23:31 ±   00:16 4.4/0.0112 4.1/0.0106 8.48 8.45 1.52e+04 20.5 8 APO*       (2005 WY55) 2065-May-28 13:41 ±   16:14 1.8/0.0046 0.2/0.0006 18.76 18.73 1.68e+03 20.7 26 APO*       (2003 YN107) 2065-Dec-13 02:36 ± < 00:01 3.7/0.0096 3.7/0.0096 2.48 2.37 3.89e+05 26.3 12 ATE*       (2002 SZ) 2067-Sep-10 21:58 ±   00:01 3.8/0.0097 3.8/0.0097 17.82 17.81 8.58e+03 20.4 15 APO*       (2005 EU2) 2068-Mar-29 17:55 ±   00:08 2.4/0.0062 2.4/0.0061 6.92 6.86 264 23.1 33 APO*       (2004 JP1) 2068-May-17 21:49 ±   10:12 2.6/0.0067 2.6/0.0067 12.68 12.64 2.64e+05 22.7 9 APO*       (2000 SG344) 2069-May-02 00:16 ± 2_04:47 0.5/0.0013 0.2/0.0005 2.41 1.31 4.43e+04 24.8 11 ATE*       (2003 LH) 2069-May-27 16:53 ±   01:08 3.8/0.0098 1.6/0.0042 6.82 6.78 2.52e+03 24.9 9 ATE*  2340 Hathor 2069-Oct-21 08:25 ± < 00:01 2.6/0.0066 2.6/0.0066 13.20 13.17 9.65e+04 19.2 28 ATE* 163348 (2002 NN4) 2070-Jun-06 14:45 ± < 00:01 4.0/0.0102 3.9/0.0101 12.32 12.29 3.93e+04 20.0 96 ATE* 154276 (2002 SY50) 2071-Oct-30 01:34 ±   00:03 3.4/0.0087 3.4/0.0087 21.42 21.40 1.71e+05 17.6 60 APO*       (2005 GR33) 2073-Apr-13 12:13 ± < 00:01 4.9/0.0126 4.9/0.0126 15.60 15.59 2.59e+03 22.0 7 ATE* 164121 (2003 YT1) 2073-Apr-29 04:29 ± < 00:01 4.4/0.0113 4.4/0.0113 23.83 23.82 1.54e+05 16.2 48 APO*       (2002 TZ66) 2074-Oct-05 19:01 ±   01:34 4.0/0.0103 2.9/0.0076 5.36 5.31 5.76e+04 25.9 12 ATE*       (2006 SN198) 2075-Sep-29 17:56 ± 1_11:21 2.5/0.0063 1.2/0.0031 16.34 16.31 616 26.2 2 APO*       (2006 XR4) 2075-Dec-16 22:48 ±   05:21 5.0/0.0128 1.4/0.0037 9.54 9.52 2.66e+03 26.2 3 APO*       (2002 LV) 2076-Aug-04 13:15 ±   00:13 4.1/0.0106 4.0/0.0102 20.01 20.00 1.01e+05 16.5 62 APO*       (2005 UW5) 2076-Oct-30 12:16 ±   22:45 1.2/0.0031 0.9/0.0024 9.60 9.51 1.21e+05 27.5 4 APO* 162173 (1999 JU3) 2076-Dec-06 05:39 ± < 00:01 4.1/0.0104 4.1/0.0104 4.47 4.41 7.29e+03 19.2 53 APO*       (2001 QE71) 2077-Aug-15 23:48 ±   12:52 4.0/0.0104 1.9/0.0048 5.40 5.35 7.9e+04 24.4 10 APO*       (2005 WK4) 2078-Aug-10 13:54 ±   00:09 5.0/0.0128 4.7/0.0121 9.19 9.16 4.35e+03 20.2 19 APO* 52768 (1998 OR2) 2079-Apr-16 14:05 ±   00:22 4.6/0.0118 4.6/0.0118 8.17 8.14 2.69e+04 15.9 40 AMO* 163132 (2002 CU11) 2080-Aug-31 00:30 ± < 00:01 1.7/0.0043 1.6/0.0042 26.36 26.34 862 18.2 53 APO* 101955 (1999 RQ36) 2080-Sep-22 14:47 ±   00:07 3.7/0.0094 3.6/0.0093 6.25 6.21 1.99e+05 20.8 63 APO*       (2006 GB) 2081-Mar-22 05:05 ±   00:02 4.0/0.0102 3.7/0.0094 7.10 7.07 1.11e+05 20.3 32 ATE*       (2003 SR84) 2081-Sep-28 18:00 ± 1_01:46 2.7/0.0069 1.8/0.0047 10.58 10.54 3.43e+05 25.2 18 APO*       (2004 FG29) 2083-Apr-03 02:50 ±   01:49 4.9/0.0127 4.3/0.0110 15.02 15.01 2.64e+03 25.8 3 ATE*       (2006 JF42) 2083-May-03 01:20 ±   00:09 3.6/0.0091 3.5/0.0089 12.46 12.43 3.68e+04 19.0 21 ATE*       (2005 ED318) 2083-Jun-02 02:45 ±   00:03 3.4/0.0089 3.4/0.0088 6.38 6.33 3.74e+05 20.7 35 AMO*       (2002 CB19) 2084-Aug-10 19:27 ±   02:54 2.0/0.0050 0.5/0.0012 15.63 15.59 354 24.8 7 APO*       (2001 BF10) 2085-Apr-28 17:21 ±   01:13 3.8/0.0097 3.5/0.0089 9.00 8.97 1.14e+04 22.3 12 APO*  2340 Hathor 2086-Oct-21 16:04 ± < 00:01 2.3/0.0059 2.2/0.0058 13.22 13.19 9.16e+04 19.2 28 ATE*       (1999 VP11) 2086-Oct-22 08:03 ±   00:07 2.9/0.0075 2.8/0.0071 20.63 20.61 1.31e+04 18.4 15 APO*       (2005 VL1) 2087-Nov-02 22:41 ± 2_22:45 1.4/0.0036 1.0/0.0025 6.58 6.47 375 26.7 8 ATE*       (2000 QK130) 2089-Mar-15 19:33 ±   14:54 3.7/0.0095 0.5/0.0012 7.61 7.57 5.68e+03 20.6 22 APO*       (2005 TC51) 2089-Oct-14 22:19 ±   17:47 2.4/0.0062 2.0/0.0050 9.35 9.30 1.1e+03 27.2 1 APO*       (2006 WB) 2089-Nov-30 15:56 ±   03:02 4.0/0.0103 3.7/0.0095 4.42 4.36 7.25e+04 22.8 13 ATE* 153201 (2000 WO107) 2093-Nov-30 22:52 ± < 00:01 3.2/0.0083 3.2/0.0083 26.18 26.17 1.69e+04 19.0 39 ATE*       (1998 SC15) 2095-Apr-09 02:10 ±   00:03 3.3/0.0085 3.3/0.0084 14.06 14.04 1.02e+04 19.4 21 APO*       (1996 RG3) 2096-Feb-29 16:48 ±   00:28 2.4/0.0063 2.3/0.0059 14.15 14.12 1.84e+04 18.6 5 APO*       (2005 UO) 2096-Oct-11 09:56 ±   07:18 4.1/0.0106 0.2/0.0004 18.72 18.71 773 22.1 14 APO*       (2003 YH111) 2096-Dec-30 04:17 ±   11:01 3.9/0.0100 3.8/0.0099 13.83 13.81 4.13e+04 24.5 3 APO*       (2003 HW10) 2097-Apr-29 22:16 ±   06:06 2.1/0.0053 1.2/0.0030 13.14 13.10 3.68e+04 26.9 4 APO*       (2006 CM10) 2099-Aug-14 07:32 ± 1_13:50 3.4/0.0088 1.9/0.0050 22.78 22.77 2.63e+03 21.7 12 APO* 33342 (1998 WT24) 2099-Dec-18 00:26 ± < 00:01 4.9/0.0126 4.9/0.0126 9.01 8.98 3.61e+06 17.9 70 ATE*       (2001 GQ2) 2100-Apr-27 17:00 ± < 00:01 1.3/0.0034 1.3/0.0034 19.45 19.41 1.88e+05 20.0 54 APO*       (2006 BA) 2101-Jan-22 20:50 ± 3_03:57 3.1/0.0079 2.0/0.0051 6.58 6.53 5.35e+04 27.6 3 APO*       (2002 PD43) 2101-Aug-06 23:23 ±   00:54 2.5/0.0063 2.0/0.0051 39.55 39.54 5.54e+03 19.0 13 APO*       (2002 GR) 2102-Mar-22 02:52 ± 3_00:30 4.8/0.0124 1.8/0.0045 5.49 5.45 2.06e+04 23.1 13 APO* 54509 YORP 2104-Jan-02 05:04 ± < 00:01 2.0/0.0053 2.0/0.0053 7.23 7.16 8.28e+04 22.6 77 APO*       (2007 DD) 2104-Feb-13 17:37 ± 1_02:41 1.4/0.0036 1.4/0.0035 3.67 3.46 493 25.8 7 ATE* 162416 (2000 EH26) 2106-Apr-21 16:01 ±   00:07 3.6/0.0093 3.6/0.0092 8.15 8.12 7.52e+03 21.3 37 APO*       (2006 GB1) 2106-Apr-25 07:36 ± 2_16:15 4.2/0.0108 3.8/0.0097 9.07 9.04 7.52e+04 23.7 9 APO*       (2004 QA22) 2108-Dec-18 14:35 ±   06:45 4.4/0.0113 3.8/0.0097 3.71 3.64 3.96e+04 27.9 7 ATE*       (2001 SY169) 2110-Mar-10 08:33 ± 2_17:36 4.4/0.0113 1.0/0.0026 13.08 13.07 639 22.3 5 APO*       (1999 MN) 2110-Jun-04 10:22 ± < 00:01 2.6/0.0068 2.6/0.0068 15.14 15.11 2.97e+04 21.4 24 ATE*  2340 Hathor 2113-Oct-22 12:23 ±   00:02 2.1/0.0055 1.9/0.0049 13.23 13.19 8.14e+04 19.2 28 ATE* 152685 (1998 MZ) 2116-Nov-26 23:30 ±   00:01 1.1/0.0028 1.1/0.0027 17.55 17.49 2.82e+04 19.3 61 APO*       (2004 KG1) 2119-May-20 02:10 ±   09:13 1.1/0.0029 0.2/0.0006 10.21 10.12 3.41e+03 24.0 10 ATE*       (2000 WP19) 2121-Nov-17 13:43 ±   00:08 4.9/0.0126 4.7/0.0122 8.48 8.45 4.5e+04 22.4 7 ATE*       (2005 GC120) 2122-Nov-30 17:58 ±   00:23 2.2/0.0056 1.7/0.0045 17.77 17.74 3.09e+03 19.6 12 APO* 69230 Hermes 2123-Apr-29 19:14 ±   05:38 4.3/0.0111 3.9/0.0099 18.49 18.48 6.13e+05 17.5 74 APO*       (2003 YN107) 2123-Jun-07 12:05 ±   00:59 4.7/0.0120 4.5/0.0115 2.46 2.37 1.28e+05 26.3 12 ATE*       (2004 UT1) 2127-Oct-30 16:09 ±   00:11 4.0/0.0103 3.1/0.0081 6.76 6.72 1.25e+04 26.4 3 ATE* 85182 (1991 AQ) 2130-Jan-27 10:15 ± < 00:01 4.1/0.0106 4.1/0.0106 24.73 24.72 1.13e+05 17.1 38 APO* 163348 (2002 NN4) 2130-Jun-07 19:18 ± < 00:01 2.7/0.0070 2.7/0.0069 12.25 12.22 3.15e+04 20.0 96 ATE*       (2004 QA22) 2130-Aug-24 09:49 ± 1_06:11 1.7/0.0045 3e-04/8.9e-07 3.74 3.58 0.159 27.9 7 ATE*       (2001 AD2) 2133-Apr-05 15:18 ±   00:31 3.4/0.0088 3.0/0.0077 21.53 21.51 3.96e+03 19.1 14 APO*       (2004 LV3) 2135-Dec-27 03:27 ±   00:02 4.8/0.0124 4.8/0.0123 20.15 20.14 2.98e+04 18.6 29 APO*       (2000 YF29) 2136-Jan-25 11:44 ±   00:51 4.9/0.0125 4.7/0.0121 7.51 7.48 2.09e+05 20.1 32 APO*       (1999 MN) 2137-Jun-04 06:25 ± < 00:01 2.1/0.0055 2.1/0.0055 15.21 15.18 1.13e+04 21.4 24 ATE* 153201 (2000 WO107) 2140-Dec-01 19:51 ± < 00:01 0.6/0.0017 0.6/0.0016 26.02 25.96 2.8e+03 19.0 39 ATE*       (2005 GE60) 2141-May-08 22:39 ±   00:27 1.8/0.0047 0.9/0.0024 8.19 8.12 1.29e+03 22.1 14 ATE*       (2003 RM10) 2141-Sep-04 09:21 ±   00:01 3.2/0.0081 3.2/0.0081 17.68 17.66 3.7e+04 20.3 28 APO*       (1999 FA) 2143-Mar-06 19:02 ±   00:34 4.5/0.0117 4.1/0.0105 6.96 6.93 1.85e+05 20.5 35 APO*       (2005 TU50) 2143-Oct-14 21:42 ±   12:38 4.8/0.0124 1.1/0.0029 19.61 19.60 8.88e+04 21.3 23 APO*       (1999 AQ10) 2144-Feb-19 23:04 ±   01:17 3.0/0.0077 2.9/0.0075 7.98 7.93 7.01e+04 20.3 33 ATE* 85640 (1998 OX4) 2148-Jan-22 03:23 ± < 00:01 0.8/0.0020 0.8/0.0020 12.30 12.19 8.53e+03 21.1 52 APO*       (1999 MN) 2148-Jun-03 19:28 ±   00:02 3.4/0.0087 3.3/0.0086 15.46 15.44 1.1e+04 21.4 24 ATE*       (1998 KM3) 2149-Dec-07 08:15 ±   08:02 3.9/0.0100 3.5/0.0090 18.28 18.26 3.68e+04 19.4 12 APO*       (2002 SZ) 2150-Sep-10 23:45 ±   00:08 4.1/0.0106 4.0/0.0104 17.43 17.42 1.29e+04 20.4 15 APO*       (2007 CT26) 2154-Feb-09 23:56 ±   02:59 4.0/0.0104 0.5/0.0012 11.00 10.97 287 23.4 12 ATE*       (2006 JF42) 2159-May-04 15:25 ±   00:38 2.9/0.0074 2.7/0.0070 12.36 12.33 4.28e+04 19.0 21 ATE*       (2006 FX) 2160-Mar-23 09:29 ±   03:08 4.0/0.0102 2.0/0.0051 17.08 17.06 4.39e+04 20.0 16 APO*       (2002 FD6) 2161-Apr-08 08:39 ±   00:07 3.5/0.0089 3.4/0.0088 11.33 11.30 8.01e+05 22.2 41 APO* 162474 (2000 LB16) 2163-Dec-14 12:36 ± < 00:01 4.3/0.0110 4.3/0.0110 28.12 28.12 5.7e+04 18.4 27 APO*  4660 Nereus 2166-Feb-08 19:12 ± 2_12:15 4.0/0.0104 2.2/0.0056 5.84 5.80 2.29e+05 18.2 47 APO*       (2005 ED318) 2166-Jun-14 12:33 ±   00:47 4.5/0.0115 4.4/0.0113 6.63 6.59 1.36e+05 20.7 35 AMO* 162416 (2000 EH26) 2167-Jun-22 03:42 ±   14:43 3.6/0.0093 2.4/0.0060 8.68 8.65 3.28e+04 21.3 37 APO*       (2003 QH5) 2167-Jul-23 11:14 ±   10:31 2.0/0.0052 2.0/0.0051 10.51 10.46 1.12e+04 20.1 21 APO*       (2004 UL) 2168-Nov-01 04:46 ±   04:27 3.2/0.0083 1.9/0.0048 35.75 35.74 1.37e+04 18.8 17 APO*  3362 Khufu 2169-Aug-23 01:06 ±   00:09 4.4/0.0113 4.3/0.0110 15.12 15.11 8.4e+04 18.3 16 ATE*       (2002 AJ129) 2172-Feb-08 12:30 ±   02:35 1.8/0.0047 1.8/0.0045 34.86 34.85 2.36e+04 18.4 5 APO*       (2003 YN107) 2172-Dec-08 23:19 ±   21:48 3.5/0.0089 2.1/0.0053 2.53 2.41 2.8e+04 26.3 12 ATE* 164121 (2003 YT1) 2175-May-01 01:02 ±   00:42 4.9/0.0125 4.0/0.0102 23.84 23.84 1.51e+05 16.2 48 APO* 152685 (1998 MZ) 2175-Jun-14 22:25 ± 1_20:12 4.2/0.0109 0.5/0.0013 17.19 17.18 1.07e+04 19.3 61 APO*       (2007 PV27) 2192-Feb-15 03:40 ±   05:36 2.3/0.0058 1.1/0.0029 16.37 16.34 694 20.3 12 APO* 137126 (1999 CF9) 2192-Aug-21 20:20 ±   00:09 5.0/0.0127 4.9/0.0126 17.36 17.35 1.53e+05 17.8 76 APO*       (2004 SC56) 2192-Oct-09 16:33 ±   00:17 3.4/0.0087 3.2/0.0082 10.21 10.18 1.73e+05 22.8 17 ATE*       (2000 YF29) 2193-Jan-23 10:49 ±   15:47 2.9/0.0074 2.5/0.0065 7.70 7.65 1.8e+05 20.1 32 APO*       (2002 DU3) 2193-Mar-21 14:34 ±   03:17 3.7/0.0096 2.1/0.0053 8.16 8.13 2.71e+04 20.6 5 APO*       (1999 FA) 2194-Mar-06 12:10 ±   14:51 4.3/0.0111 2.0/0.0052 6.97 6.93 1.7e+05 20.5 35 APO*       (2006 VQ13) 2194-Nov-16 16:10 ±   00:27 2.3/0.0059 1.8/0.0047 16.44 16.42 4.15e+04 20.0 23 APO*

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). 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. ref  Orbital solution reference class  Object classification: NEA="Near-Earth Asteroid", AMO="Amor", APO="Apollo", ATE="Aten", or IEO="Interior Earth Object". A trailing "*" indicates the object is also a potentially hazardous asteroid. (see definitions)   (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).

http://neo.jpl.nasa.gov/cgi-bin/neo_ca?type=NEO&hmax=all&sort=date&sdir=ASC&tlim=future&dmax=5LD&max_rows=0&fmt=full&action=Display+Table&show=1

보면 알겠지만 157개의 소행성이 5LD이내로 접근하고 그 중 18개만이 1LD이내로 접근한다.
2029년에 약간 위험한 존재가 눈에 띄긴 하지만,
태양계의 여러 중력관계에 의해서 이 마져도 아직은 불확실하다.
다만 우리가 좀 더 주의깊게 관찰할 필요는 있겠다.

하지만 이런 걱정을 한다고 해서 자연의 섭리를 거스를 수는 없을것이다.
물론 영화처럼 미사일이나 레이져, 또는 폭탄을 이용해서 파괴시키는 방법도 있겠지만
우리는 그런 과학기술에 무지하다.
우리는 단지 하루하루를 열심히 살아가는데 좀 더 힘써야 하지 않을까..