Back to main Impact Risk Page.

2007 KO4 Earth Impact Risk Summary Torino Scale (maximum) 0 Palermo Scale (maximum) -4.46 Palermo Scale (cumulative) -4.21 Impact Probability (cumulative) 4.0e-06 Number of Potential Impacts 292 Vimpact 17.64 km/s Vinfinity 13.68 km/s H 23.3 Diameter 0.075 km Mass 5.7e+08 kg Energy 2.1e+01 MT all above are mean values weighted by impact probability Analysis based on 14 observations spanning 3.0066 days (2007-May-22.26517 to 2007-May-25.27172) Orbit diagram and elements available here.

These results were computed on May 07, 2008

2007 KO4 Earth Impact Table
Date	Distance	Width	Sigma Impact	Sigma LOV	Stretch LOV	Impact Probability	Impact Energy	Palermo Scale	Torino Scale
YYYY-MM-DD.DD	(rEarth)	(rEarth)			(rEarth)		(MT)
2015-11-24.13	2.80	4.34e+01	0.041	0.88766	1.10e+04	7.0e-07	2.07e+01	-4.46	0
2022-11-23.56	100.62	3.94e+01	2.530	0.20615	2.20e+04	2.2e-08	2.32e+01	-6.21	0
2022-11-23.88	3.87	4.35e+01	0.066	0.88366	3.53e+06	2.2e-09	2.07e+01	-7.25	0
2024-11-23.84	124.41	4.57e+01	2.703	1.73690	1.99e+04	3.0e-09	1.82e+01	-7.22	0
2024-11-23.39	3.25	4.36e+01	0.052	0.89152	4.68e+06	1.6e-09	2.07e+01	-7.43	0
2029-11-23.19	142.17	3.76e+01	3.751	-0.03720	3.22e+04	3.3e-10	2.42e+01	-8.19	0
2030-11-23.74	50.25	4.01e+01	1.228	0.50286	3.10e+04	1.6e-07	2.21e+01	-5.55	0
2030-11-23.91	4.93	4.33e+01	0.091	0.87722	1.08e+06	7.2e-09	2.08e+01	-6.92	0
2032-11-23.76	97.63	4.44e+01	2.178	1.52089	2.89e+04	1.1e-08	1.88e+01	-6.81	0
2032-11-23.42	7.11	4.33e+01	0.141	0.89428	2.97e+06	2.6e-09	2.07e+01	-7.41	0
2037-11-23.34	101.21	3.90e+01	2.568	0.20686	2.69e+06	1.6e-10	2.32e+01	-8.65	0
2037-11-23.68	5.80	4.33e+01	0.111	0.88082	3.71e+06	2.1e-09	2.07e+01	-7.57	0
2038-11-23.74	51.32	3.94e+01	1.276	0.50391	2.57e+06	1.9e-09	2.21e+01	-7.62	0
2038-11-23.74	51.01	4.06e+01	1.231	0.50545	1.01e+06	4.9e-09	2.20e+01	-7.20	0
2038-11-23.84	25.07	4.05e+01	0.594	0.66256	3.73e+04	2.2e-07	2.15e+01	-5.56	0
2038-11-23.93	5.37	4.33e+01	0.101	0.86675	3.86e+05	2.0e-08	2.08e+01	-6.60	0
2040-11-23.72	86.20	4.37e+01	1.951	1.41117	3.64e+04	1.7e-08	1.91e+01	-6.75	0
2040-11-23.44	9.69	4.33e+01	0.201	0.89655	2.45e+06	3.1e-09	2.07e+01	-7.45	0
2044-11-23.11	99.09	3.92e+01	2.500	0.20460	3.02e+06	1.7e-10	2.32e+01	-8.72	0
2044-11-23.06	116.18	3.77e+01	3.055	0.10512	4.32e+04	2.7e-09	2.36e+01	-7.52	0
2044-11-23.10	101.33	3.91e+01	2.569	0.19033	2.26e+05	1.9e-09	2.33e+01	-7.66	0
2045-11-23.48	61.08	3.91e+01	1.535	0.42425	4.33e+04	8.0e-08	2.24e+01	-6.07	0
2045-11-23.51	50.41	3.99e+01	1.240	0.49183	2.85e+05	1.8e-08	2.21e+01	-6.73	0
2045-11-23.58	26.66	3.97e+01	0.646	0.66171	3.40e+06	2.4e-09	2.15e+01	-7.61	0
2045-11-23.58	26.59	4.14e+01	0.619	0.66204	5.57e+06	1.4e-09	2.15e+01	-7.83	0
2046-11-23.92	5.25	3.93e+01	0.108	0.78317	2.38e+04	3.9e-07	2.11e+01	-5.41	0
2046-11-23.94	2.56	4.49e+01	0.035	0.83732	4.89e+04	1.6e-07	2.09e+01	-5.80	0
2046-11-23.85	24.31	4.06e+01	0.574	0.66658	1.04e+06	7.9e-09	2.15e+01	-7.10	0
2048-11-23.47	9.01	4.33e+01	0.185	0.89850	1.95e+06	3.9e-09	2.07e+01	-7.45	0
2048-11-23.72	76.99	4.32e+01	1.757	1.34415	4.06e+04	2.4e-08	1.93e+01	-6.68	0
2048-11-23.73	83.19	4.38e+01	1.876	1.40526	3.19e+05	2.2e-09	1.91e+01	-7.72	0
2048-11-23.73	83.75	4.35e+01	1.902	1.41017	2.08e+06	3.2e-10	1.91e+01	-8.56	0
2048-11-23.49	15.48	4.02e+01	0.360	0.95194	8.56e+05	8.6e-09	2.05e+01	-7.10	0
2048-11-23.48	12.80	4.56e+01	0.259	0.93349	1.12e+06	6.1e-09	2.06e+01	-7.25	0
2049-11-24.05	103.39	4.43e+01	2.313	1.52296	1.60e+06	1.4e-10	1.88e+01	-8.92	0
2049-11-24.05	103.68	4.40e+01	2.335	1.52704	5.00e+05	4.4e-10	1.88e+01	-8.43	0
2050-11-24.52	160.47	4.53e+01	3.520	1.98284	2.40e+04	1.2e-10	1.76e+01	-9.03	0
2052-11-23.28	46.16	3.97e+01	1.139	0.49942	2.68e+06	2.1e-09	2.21e+01	-7.73	0
2052-11-23.46	9.39	4.32e+01	0.194	0.87973	4.03e+06	1.9e-09	2.07e+01	-7.79	0
2053-11-23.61	24.01	4.03e+01	0.571	0.65759	1.31e+06	6.4e-09	2.15e+01	-7.26	0
2053-11-23.71	7.57	4.32e+01	0.152	0.87295	1.14e+06	6.8e-09	2.08e+01	-7.25	0
2054-11-23.93	5.92	3.86e+01	0.127	0.79209	3.50e+05	2.7e-08	2.10e+01	-6.66	0
2054-11-23.94	0.05	4.56e+01	0.000	0.83276	6.52e+05	1.2e-08	2.09e+01	-7.01	0
2056-11-23.72	75.93	4.31e+01	1.740	1.34365	4.02e+06	2.5e-10	1.93e+01	-8.74	0
2056-11-23.51	16.55	4.11e+01	0.378	0.95686	8.41e+05	8.4e-09	2.05e+01	-7.19	0
2056-11-23.49	10.71	4.32e+01	0.225	0.90032	1.61e+06	4.7e-09	2.07e+01	-7.44	0
2056-11-23.71	71.89	4.29e+01	1.654	1.29841	4.05e+04	3.0e-08	1.94e+01	-6.65	0
2056-11-23.72	75.13	4.32e+01	1.714	1.33614	1.96e+05	5.3e-09	1.93e+01	-7.41	0
2056-11-23.49	12.62	4.47e+01	0.260	0.92990	1.20e+06	5.8e-09	2.06e+01	-7.35	0
2057-11-23.74	13.10	4.32e+01	0.280	0.89543	4.01e+06	1.8e-09	2.07e+01	-7.85	0
2057-11-24.16	129.43	4.60e+01	2.792	1.72469	3.79e+05	1.2e-10	1.82e+01	-9.07	0
2059-11-23.90	96.63	3.92e+01	2.441	0.20560	5.92e+06	1.0e-10	2.32e+01	-9.09	0
2059-11-23.85	112.27	3.78e+01	2.947	0.11128	3.91e+05	4.1e-10	2.36e+01	-8.48	0
2059-11-23.89	98.75	3.89e+01	2.514	0.18950	2.86e+06	1.8e-10	2.33e+01	-8.85	0
2060-11-23.27	62.06	4.09e+01	1.495	0.40197	6.66e+03	5.3e-07	2.24e+01	-5.39	0
2060-11-23.16	94.98	3.97e+01	2.367	0.21553	6.58e+05	1.1e-09	2.32e+01	-8.08	0
2060-11-23.15	96.19	3.87e+01	2.459	0.20853	2.81e+06	2.1e-10	2.32e+01	-8.79	0
2061-11-23.71	2.78	4.44e+01	0.040	0.84023	3.10e+06	2.5e-09	2.09e+01	-7.74	0
2061-11-23.57	45.34	4.01e+01	1.105	0.51388	5.74e+05	1.0e-08	2.20e+01	-7.13	0
2061-11-23.69	6.31	3.95e+01	0.134	0.77709	1.47e+06	6.3e-09	2.11e+01	-7.35	0
2064-11-23.53	19.88	4.14e+01	0.456	0.96089	7.42e+05	9.1e-09	2.05e+01	-7.22	0
2064-11-23.51	13.18	4.32e+01	0.282	0.90201	1.31e+06	5.6e-09	2.07e+01	-7.43	0
2064-11-23.71	69.82	4.26e+01	1.616	1.26610	3.30e+04	4.2e-08	1.95e+01	-6.58	0
2064-11-23.71	71.27	4.29e+01	1.639	1.28677	8.28e+04	1.5e-08	1.94e+01	-7.01	0
2064-11-23.51	14.97	4.42e+01	0.316	0.92713	1.09e+06	6.4e-09	2.06e+01	-7.38	0
2064-11-23.71	72.23	4.27e+01	1.667	1.29810	5.12e+06	2.4e-10	1.94e+01	-8.83	0
2065-11-23.77	17.65	4.71e+01	0.354	0.93643	1.22e+06	5.3e-09	2.05e+01	-7.47	0
2065-11-24.04	92.72	4.35e+01	2.107	1.42217	3.78e+05	1.1e-09	1.91e+01	-8.16	0
2065-11-23.78	19.38	3.85e+01	0.477	0.94826	1.01e+06	7.2e-09	2.05e+01	-7.33	0
2067-11-24.08	47.30	3.97e+01	1.166	0.49784	2.60e+06	2.1e-09	2.21e+01	-7.85	0
2067-11-24.04	58.71	3.88e+01	1.489	0.42122	2.58e+06	1.5e-09	2.24e+01	-8.01	0
2067-11-24.26	9.26	4.31e+01	0.191	0.87912	3.39e+06	2.3e-09	2.07e+01	-7.84	0
2067-11-24.25	8.91	4.32e+01	0.183	0.87962	2.05e+07	3.8e-10	2.07e+01	-8.62	0
2068-11-23.32	46.20	3.97e+01	1.139	0.49084	5.77e+06	9.8e-10	2.21e+01	-8.19	0
2068-11-23.51	10.00	4.31e+01	0.209	0.87485	1.41e+06	5.5e-09	2.08e+01	-7.47	0
2068-11-23.30	54.95	3.90e+01	1.382	0.43510	3.20e+05	1.4e-08	2.23e+01	-7.05	0
2069-11-23.58	43.04	4.00e+01	1.051	0.51008	1.47e+06	4.2e-09	2.20e+01	-7.57	0
2069-11-23.71	4.12	3.99e+01	0.078	0.76659	2.74e+05	3.4e-08	2.11e+01	-6.68	0
2069-11-23.74	7.16	4.39e+01	0.140	0.84547	4.77e+05	1.6e-08	2.09e+01	-6.99	0
2069-11-23.75	9.17	4.32e+01	0.189	0.85987	2.14e+05	3.7e-08	2.08e+01	-6.65	0
2069-11-23.75	10.17	4.32e+01	0.212	0.86472	9.90e+05	7.8e-09	2.08e+01	-7.32	0
2072-11-23.53	14.96	4.40e+01	0.317	0.92470	8.96e+05	7.8e-09	2.06e+01	-7.34	0
2072-11-23.52	13.42	4.42e+01	0.281	0.92688	9.40e+06	7.5e-10	2.06e+01	-8.36	0
2072-11-23.55	20.72	4.16e+01	0.474	0.96448	6.16e+05	1.1e-08	2.04e+01	-7.20	0
2072-11-23.53	13.58	4.32e+01	0.291	0.90367	9.65e+05	7.6e-09	2.06e+01	-7.35	0
2073-11-23.43	95.99	3.89e+01	2.443	0.19210	2.45e+06	2.5e-10	2.32e+01	-8.81	0
2073-11-23.44	95.69	3.86e+01	2.454	0.19797	6.45e+05	9.1e-10	2.32e+01	-8.24	0
2073-11-23.44	94.80	3.94e+01	2.379	0.20349	2.07e+06	3.3e-10	2.32e+01	-8.68	0
2073-11-23.39	112.08	3.74e+01	2.970	0.09958	8.82e+05	1.7e-10	2.36e+01	-8.97	0
2073-11-24.03	83.42	4.30e+01	1.915	1.35053	9.60e+05	7.4e-10	1.92e+01	-8.40	0
2073-11-23.78	14.46	4.31e+01	0.312	0.89748	1.44e+06	5.1e-09	2.07e+01	-7.54	0
2073-11-24.10	102.56	4.43e+01	2.291	1.49825	1.49e+05	1.7e-09	1.88e+01	-8.04	0
2074-11-23.69	93.82	3.89e+01	2.385	0.20600	6.01e+06	1.1e-10	2.32e+01	-9.15	0
2074-11-24.03	15.74	4.31e+01	0.342	0.89451	1.09e+07	6.7e-10	2.07e+01	-8.42	0
2074-11-24.03	15.39	4.31e+01	0.334	0.89528	9.91e+06	7.3e-10	2.07e+01	-8.38	0
2074-11-24.03	14.99	4.31e+01	0.324	0.89496	3.05e+06	2.4e-09	2.07e+01	-7.87	0
2074-11-24.36	107.98	4.41e+01	2.426	1.53557	3.29e+05	5.3e-10	1.87e+01	-8.56	0
2074-11-24.02	12.42	4.31e+01	0.265	0.88028	2.70e+06	2.8e-09	2.07e+01	-7.80	0
2075-11-23.94	93.98	3.86e+01	2.406	0.20784	3.97e+06	1.7e-10	2.32e+01	-9.00	0
2075-11-23.94	92.64	3.94e+01	2.324	0.21624	2.73e+06	2.9e-10	2.31e+01	-8.76	0
2075-11-23.95	91.88	3.94e+01	2.307	0.21960	4.42e+05	1.8e-09	2.31e+01	-7.95	0
2075-11-24.04	60.80	3.67e+01	1.631	0.39917	2.27e+06	1.4e-09	2.24e+01	-8.08	0
2075-11-24.04	60.35	4.01e+01	1.479	0.40210	2.56e+06	1.4e-09	2.24e+01	-8.07	0
2076-11-23.52	11.80	4.31e+01	0.250	0.86852	1.50e+06	5.1e-09	2.08e+01	-7.55	0
2076-11-23.52	12.03	4.31e+01	0.256	0.87139	3.27e+05	2.3e-08	2.08e+01	-6.89	0
2076-11-23.42	20.42	4.03e+01	0.481	0.65290	7.44e+05	1.2e-08	2.15e+01	-7.17	0
2076-11-23.31	54.65	3.92e+01	1.370	0.42905	1.91e+06	2.3e-09	2.23e+01	-7.87	0
2076-11-23.30	54.97	3.89e+01	1.388	0.43499	2.22e+07	1.9e-10	2.23e+01	-8.95	0
2076-11-23.30	54.92	3.91e+01	1.380	0.43483	9.07e+06	4.8e-10	2.23e+01	-8.55	0
2077-11-23.76	7.81	4.33e+01	0.157	0.85914	6.03e+06	1.3e-09	2.08e+01	-8.15	0
2077-11-23.60	42.52	4.00e+01	1.039	0.50860	2.30e+06	2.7e-09	2.21e+01	-7.81	0
2077-11-23.69	16.81	4.04e+01	0.392	0.67709	3.05e+05	3.0e-08	2.14e+01	-6.78	0
2080-11-23.55	14.53	4.32e+01	0.313	0.90542	6.26e+05	1.2e-08	2.06e+01	-7.22	0
2080-11-23.55	15.47	4.38e+01	0.331	0.92225	6.22e+05	1.1e-08	2.06e+01	-7.23	0
2080-11-23.57	20.05	4.16e+01	0.458	0.96505	2.89e+06	2.3e-09	2.04e+01	-7.92	0
2080-11-23.58	22.06	4.18e+01	0.504	0.96795	4.57e+05	1.4e-08	2.04e+01	-7.14	0
2081-11-23.46	92.10	3.90e+01	2.338	0.20520	3.43e+06	2.2e-10	2.32e+01	-8.90	0
2081-11-24.02	79.31	4.27e+01	1.835	1.30347	1.39e+06	6.4e-10	1.94e+01	-8.51	0
2081-11-23.82	22.52	4.03e+01	0.533	0.95296	1.59e+06	4.2e-09	2.05e+01	-7.67	0
2081-11-23.82	22.98	4.06e+01	0.542	0.95435	5.63e+05	1.2e-08	2.05e+01	-7.22	0
2081-11-23.82	23.46	4.09e+01	0.550	0.95600	2.17e+06	3.0e-09	2.05e+01	-7.81	0
2081-11-24.05	86.05	4.32e+01	1.971	1.35861	2.64e+05	2.4e-09	1.92e+01	-7.94	0
2081-11-23.81	19.69	4.49e+01	0.416	0.93171	7.73e+05	8.5e-09	2.06e+01	-7.37	0
2081-11-23.81	19.57	4.52e+01	0.410	0.93272	2.10e+06	3.1e-09	2.06e+01	-7.80	0
2081-11-24.11	103.02	4.42e+01	2.308	1.49949	1.27e+06	1.9e-10	1.88e+01	-9.04	0
2081-11-24.12	105.74	4.43e+01	2.365	1.50772	4.68e+05	4.5e-10	1.88e+01	-8.67	0
2081-11-23.61	42.25	3.94e+01	1.046	0.50034	3.70e+06	1.7e-09	2.21e+01	-8.04	0
2081-11-23.61	41.62	3.91e+01	1.039	0.50101	8.72e+06	7.3e-10	2.21e+01	-8.40	0
2081-11-23.61	41.60	3.98e+01	1.020	0.50142	1.14e+07	5.6e-10	2.21e+01	-8.52	0
2082-11-23.83	54.36	3.89e+01	1.373	0.41950	2.22e+06	2.0e-09	2.24e+01	-7.97	0
2082-11-23.81	57.24	3.79e+01	1.484	0.39719	4.40e+06	8.9e-10	2.25e+01	-8.32	0
2082-11-24.04	14.40	4.31e+01	0.311	0.87873	7.05e+05	1.1e-08	2.08e+01	-7.27	0
2082-11-23.82	55.35	3.90e+01	1.395	0.40812	2.29e+06	1.9e-09	2.24e+01	-7.99	0
2082-11-24.06	21.60	4.93e+01	0.417	0.93838	5.84e+05	1.0e-08	2.06e+01	-7.29	0
2082-11-24.07	22.71	3.60e+01	0.602	0.94597	5.15e+05	1.4e-08	2.05e+01	-7.15	0
2082-11-23.81	57.97	3.81e+01	1.497	0.39121	1.42e+06	2.7e-09	2.25e+01	-7.84	0
2082-11-23.86	41.94	3.97e+01	1.032	0.49685	1.99e+06	3.2e-09	2.21e+01	-7.77	0
2082-11-23.86	42.27	3.96e+01	1.041	0.49766	1.28e+07	4.9e-10	2.21e+01	-8.58	0
2082-11-24.05	17.41	4.31e+01	0.381	0.89599	3.91e+05	1.8e-08	2.07e+01	-7.03	0
2082-11-24.45	128.29	3.95e+01	3.225	1.68633	3.65e+04	4.2e-10	1.83e+01	-8.71	0
2082-11-24.46	129.08	5.08e+01	2.523	1.69218	3.77e+04	2.5e-09	1.83e+01	-7.95	0
2082-11-24.47	133.35	4.55e+01	2.907	1.72030	1.05e+05	3.3e-10	1.82e+01	-8.83	0
2082-11-24.47	133.62	4.59e+01	2.892	1.72178	1.73e+05	2.0e-10	1.82e+01	-9.03	0
2082-11-24.33	94.92	4.33e+01	2.167	1.41713	1.27e+06	3.0e-10	1.91e+01	-8.85	0
2082-11-23.86	42.60	3.97e+01	1.049	0.49306	5.38e+06	1.2e-09	2.21e+01	-8.21	0
2082-11-23.81	56.26	3.89e+01	1.421	0.40368	6.23e+06	6.7e-10	2.24e+01	-8.44	0
2083-11-24.29	12.09	4.30e+01	0.258	0.87539	1.77e+06	4.3e-09	2.07e+01	-7.67	0
2083-11-23.96	92.31	3.83e+01	2.386	0.20885	3.50e+06	2.0e-10	2.32e+01	-8.96	0
2083-11-23.97	92.43	3.77e+01	2.428	0.20966	4.89e+05	1.3e-09	2.32e+01	-8.15	0
2083-11-23.97	91.96	4.03e+01	2.258	0.21218	2.67e+05	3.4e-09	2.32e+01	-7.74	0
2083-11-23.97	91.25	3.96e+01	2.279	0.21440	1.31e+06	6.6e-10	2.32e+01	-8.44	0
2083-11-24.11	46.53	3.98e+01	1.142	0.47946	1.08e+05	5.2e-08	2.21e+01	-6.56	0
2083-11-24.11	45.15	3.97e+01	1.111	0.48939	1.04e+06	5.6e-09	2.21e+01	-7.53	0
2083-11-24.08	52.92	3.89e+01	1.335	0.43597	4.30e+06	1.1e-09	2.23e+01	-8.24	0
2083-11-24.25	1.92	3.94e+01	0.023	0.77883	6.24e+06	1.5e-09	2.11e+01	-8.12	0
2084-11-23.53	7.39	4.42e+01	0.145	0.84186	2.67e+06	2.9e-09	2.09e+01	-7.84	0
2084-11-23.34	54.67	3.91e+01	1.373	0.42768	3.36e+06	1.3e-09	2.23e+01	-8.17	0
2084-11-23.38	40.49	4.00e+01	0.988	0.51529	1.11e+06	5.9e-09	2.20e+01	-7.51	0
2084-11-23.38	40.26	4.00e+01	0.982	0.51899	2.21e+05	3.0e-08	2.20e+01	-6.81	0
2084-11-23.99	136.52	4.51e+01	3.003	1.75265	1.92e+05	1.3e-10	1.81e+01	-9.25	0
2084-11-23.50	2.43	3.96e+01	0.036	0.77363	1.27e+06	7.3e-09	2.11e+01	-7.44	0
2084-11-23.49	2.84	3.98e+01	0.046	0.76743	6.57e+06	1.4e-09	2.11e+01	-8.15	0
2085-11-23.71	16.84	4.03e+01	0.393	0.67187	8.74e+05	1.0e-08	2.14e+01	-7.29	0
2085-11-23.62	42.13	4.00e+01	1.029	0.50778	2.73e+06	2.3e-09	2.21e+01	-7.93	0
2087-11-24.26	1.62	3.88e+01	0.016	0.78774	5.89e+06	1.6e-09	2.11e+01	-8.11	0
2088-11-23.10	129.99	3.76e+01	3.433	-0.02231	1.41e+05	2.4e-10	2.41e+01	-8.90	0
2088-11-23.56	16.04	4.31e+01	0.349	0.90646	4.66e+05	1.5e-08	2.06e+01	-7.14	0
2088-11-23.57	16.72	4.32e+01	0.364	0.90728	2.47e+05	2.9e-08	2.06e+01	-6.87	0
2088-11-23.57	17.41	4.36e+01	0.376	0.91950	3.32e+05	2.1e-08	2.06e+01	-7.01	0
2088-11-23.56	16.44	<