小行星2006 OK3与地球擦肩而过
澳大利亚赛丁泉巡天的R. H. McNaught昨天发现了一颗小行星2006 OK3，将在北京时间今天下午和地球擦肩而过，距离只有30万公里不到，比月球到地球的距离还近。这颗小行星的直径约为10米，对地球没有太大威胁。它将在北京时间今天傍晚达到最大亮度—— 约15等。届时它将以约10′/min的速度在天空中飞驰。(http://cfa-www.harvard.edu/mpec/K06/K06O22.html) Orbit and ephemeris:Orbital elements:
2006 OK3 Earth MOID = 0.0008 AU
Epoch 2006 Sept. 22.0 TT = JDT 2454000.5 MPC
M 6.23358 (2000.0) P Q
n 0.45688059 Peri. 66.79529 +0.97469508 -0.13037349
a 1.6695557 Node 300.25660 +0.02628729 +0.87352342
e 0.5160015 Incl. 12.13520 +0.22198756 +0.46899849
P 2.16 H 27.0 G 0.15 U 6
Ephemeris:
2006 OK3 a,e,i = 1.67, 0.52, 12 q = 0.8081
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2006 07 19.0 19 59.56 -48 02.6 0.0376 1.050 152.8 26.2 21.2
2006 07 19.2 20 00.19 -47 57.7 0.0359 1.048 152.9 26.2 21.1
2006 07 19.4 20 00.87 -47 52.3 0.0342 1.047 152.9 26.2 21.0
2006 07 19.6 20 01.62 -47 46.2 0.0325 1.045 153.0 26.2 20.8
2006 07 19.8 20 02.44 -47 39.4 0.0308 1.044 153.1 26.1 20.7
2006 07 20.0 20 03.36 -47 31.8 0.0291 1.042 153.2 26.1 20.6
2006 07 20.2 20 04.38 -47 23.1 0.0274 1.041 153.3 26.0 20.5
2006 07 20.4 20 05.53 -47 13.2 0.0258 1.039 153.4 26.0 20.3
2006 07 20.6 20 06.83 -47 01.8 0.0241 1.038 153.6 25.9 20.2
2006 07 20.8 20 08.31 -46 48.6 0.0224 1.036 153.7 25.7 20.0
2006 07 21.0 20 10.02 -46 33.1 0.0207 1.035 153.9 25.6 19.8
2006 07 21.2 20 12.00 -46 14.7 0.0190 1.033 154.2 25.4 19.6
2006 07 21.4 20 14.34 -45 52.5 0.0174 1.032 154.5 25.1 19.4
2006 07 21.6 20 17.14 -45 25.3 0.0157 1.030 154.8 24.8 19.2
2006 07 21.8 20 20.53 -44 51.3 0.0140 1.029 155.3 24.4 18.9
2006 07 22.0 20 24.75 -44 07.4 0.0123 1.027 155.9 23.9 18.6
2006 07 22.1 20 27.27 -43 40.4 0.0115 1.027 156.2 23.5 18.5
2006 07 22.2 20 30.13 -43 09.0 0.0107 1.026 156.6 23.2 18.3
2006 07 22.3 20 33.41 -42 31.9 0.00986 1.025 157.0 22.8 18.1
2006 07 22.4 20 37.20 -41 47.6 0.00903 1.024 157.5 22.3 17.9
2006 07 22.5 20 41.64 -40 53.7 0.00821 1.024 158.1 21.8 17.7
2006 07 22.6 20 46.91 -39 47.1 0.00739 1.023 158.7 21.2 17.4
2006 07 22.7 20 53.24 -38 22.7 0.00658 1.022 159.3 20.6 17.2
2006 07 22.8 21 00.99 -36 33.0 0.00578 1.021 159.9 20.0 16.9
2006 07 22.9 21 10.66 -34 05.4 0.00499 1.021 160.4 19.5 16.5
2006 07 23.0 21 23.04 -30 39.0 0.00422 1.020 160.2 19.7 16.2
2006 07 23.1 21 39.32 -25 36.2 0.00348 1.019 158.5 21.4 15.8
2006 07 23.2 22 01.43 -17 49.1 0.00281 1.018 153.4 26.5 15.5
2006 07 23.3 22 32.46 -05 26.6 0.00225 1.018 142.4 37.6 15.3
2006 07 23.4 23 17.07 +13 03.0 0.00192 1.017 123.3 56.6 15.5
2006 07 23.5 00 20.29 +34 07.1 0.00192 1.016 99.6 80.3 16.3
2006 07 23.6 01 40.91 +49 25.2 0.00227 1.016 79.6 100.3 17.5
2006 07 23.7 03 03.47 +56 40.4 0.00283 1.015 66.3 113.6 18.7
2006 07 23.8 04 10.42 +59 00.8 0.00351 1.014 57.8 122.0 19.8
2006 07 23.9 04 58.10 +59 16.2 0.00424 1.013 52.3 127.5 20.6
2006 07 24.0 05 31.12 +58 48.2 0.00501 1.013 48.5 131.3 21.4 有人看到吗? :shock: 这么快吗？我上次拍到一个速度和这个类似的东西，但以为是人卫，就没管它，看来以后要留意了。
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