2005 YU55, MPEC 2005-Y47, MPEC 2010-D58, MPEC 2010-E08
Астероид 2005 YU55 открыт 28 декабря 2005 года в обсерватории
Spacewatch ..
Элементы орбиты
астероида 2005 YU55:
Epoch 2005 Dec. 16.0 TT = JDT 2453720.5 MPC
M 169.11098 (2000.0) P Q
n 0.89504426 Peri. 273.04385 +0.14266712 +0.98977053
a 1.0663662 Node 5.15848 -0.90533720 +0.13074975
e 0.3258279 Incl. 0.39490 -0.40001332 +0.05708585
P 1.10 H 22.4 G 0.15
From 12 observations 2005 Dec. 28-29. E-assumed.
Эфемериды
астероида 2005 YU55 на
24:00 мск.:
Date ...... UT ...... R.A. (J2000) ... Decl. ......... R.A. (J2000) ..... Decl. .... Delta .... r ... El. ... Ph. .. V
2010 04 03 200000 13:38:13.083 -08:09:13.320 13:38:14.270 -08:09:20.173 0.123 1.12 167.9 10.8 18.2
2010 04 04 200000 13:36:36.435 -07:56:02.290 13:36:37.621 -07:56:09.149 0.115 1.113 169.3 9.6 18.0
2010 04 05 200000 13:34:43.409 -07:40:44.919 13:34:44.594 -07:40:51.781 0.107 1.106 170.8 8.3 17.7
2010 04 06 200000 13:32:30.591 -07:22:53.500 13:32:31.774 -07:23:00.357 0.099 1.099 172.3 7.0 17.5
2010 04 07 200000 13:29:53.460 -07:01:51.116 13:29:54.638 -07:01:57.959 0.091 1.092 173.9 5.6 17.2
2010 04 08 200000 13:26:45.889 -06:36:47.519 13:26:47.060 -06:36:54.337 0.083 1.084 175.6 4.1 16.9
2010 04 09 200000 13:22:59.384 -06:06:32.644 13:23:00.546 -06:06:39.419 0.076 1.077 177.0 2.8 16.6
2010 04 10 200000 13:18:21.828 -05:29:26.045 13:18:22.977 -05:29:32.754 0.068 1.07 177.4 2.5 16.4
2010 04 11 200000 13:12:35.364 -04:42:59.061 13:12:36.495 -04:43:05.667 0.06 1.063 175.8 3.9 16.2
2010 04 12 200000 13:05:12.641 -03:43:23.413 13:05:13.746 -03:43:29.859 0.053 1.055 173.1 6.5 16.0
2010 04 13 200000 12:55:29.799 -02:24:33.506 12:55:30.868 -02:24:39.700 0.046 1.048 169.6 10.0 15.8
2010 04 14 200000 12:42:12.550 -00:36:16.167 12:42:13.566 -00:36:21.949 0.039 1.04 164.9 14.6 15.6
2010 04 15 200000 12:23:06.819 +01:59:22.993 12:23:07.752 +01:59:17.921 0.032 1.033 158.5 20.8 15.4
2010 04 16 200000 11:53:54.027 +05:54:14.746 11:53:54.821 +05:54:10.965 0.025 1.026 149.3 29.9 15.2
2010 04 17 200000 11:05:57.417 +11:57:56.319 11:05:57.956 +11:57:54.925 0.02 1.018 135.1 44.1 15.0
2010 04 18 200000 09:44:37.104 +20:25:57.854 09:44:37.139 +20:26:00.056 0.016 1.011 112.9 66.3 15.2
2010 04 19 200000 07:46:44.159 +27:25:22.114 07:46:43.396 +27:25:25.833 0.015 1.003 84.2 95.0 16.1
2010 04 20 200000 05:56:59.133 +28:07:52.932 05:56:57.788 +28:07:53.683 0.018 0.995 59.0 120.1 17.9
2010 04 21 200000 04:46:52.945 +25:40:54.698 04:46:51.416 +25:40:52.310 0.023 0.988 42.2 136.9 20.1
2010 04 22 200000 04:05:33.513 +23:09:38.513 04:05:31.955 +23:09:34.275 0.029 0.98 31.5 147.6 22.1
Asteroid
2005 YU55 was discovered in late 2005 (duh!) by
Bob McMillan and
Jim Scotti of
Spacewatch, at the
Lunar and Planetary Lab within the University of Arizona. Once the orbit was refined thanks to continued observations it became clear 2005 YU55 would not hit the Earth:though it would pass near. In a few weeks, late on November 8 (
UTC), 2005 YU55 will fly by the Earth and Moon and continue, barely perturbed, on its 446 day orbit around the Sun.
Its closest approach of 325,162 km (202,089 miles) will take place around 23:29 UTC. A few hours later, on the morning of November 9 at around 07:20 UTC, it will whiz by even closer to the Moon, at a distance of some 239,867 km (149,078 miles). Thanks to Arecibo's radar telescope (see image above) we now know this asteroid is roughly spherical in shape with a diameter of about 400m (1311 feet); that's slightly less than 4 football fields (American or European) end to end. Good job it won't be hitting us!