Event between (341275) 07RG283 and star UC4-692-020389 with event index number of 43542
Geocentric closest approach at 2015/10/19 06:54:40 UTC
J2000 position of star is 03:10:32.1 +48:23:11
Equinox of date position of star is 03:11:38.2 +48:26:43
Stellar brightness R=15.3
Star is 130 degrees from the moon.
Moon is 34% illuminated.
TNO apparent brightness V=20.8
[RECON map]
TNO is 16.2 AU from the Sun
and 15.5 AU from the Earth.
The TNO is moving 18.5
km/sec on the sky relative to the star, or,
5.9 arcsec/hr.
The 1-sigma error in the time of the event is 188 seconds.
The 1-sigma cross-track error in the shadow position is
921 km.
The TNO has an absolute magnitude Hv=8.6
Diameter=114.8 km assuming a 5% albedo -- 6.2 sec chord
Diameter=46.9 km assuming a 30% albedo -- 2.5 sec chord
Dynamical classification is CENTAURR
Star training set for 341275, (2015/10/19 06:55UT) Object RA Dec mag sep mel Aldebaran 04:36:49.7 +16:32:23 0.8 36.34 153 Mirphak 03:25:27.5 +49:54:58 1.8 2.69 132 PPM 045922 03:13:32.4 +47:47:03 6.3 0.73 131 PPM 045887 03:10:41.3 +48:41:02 8.1 0.29 130 341275 03:11:38.3 +48:26:44 15.3 130 Positions are for equinox of date
This table contains the target star visibility for the RECON
network. The observing range has been set to a maximum of
5.0 sigma about the mid-time.
The median site spacing is 28.7 km
RECON observability=1.0 and success probability=32.8%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Oroville | 06:56:55 | -49.8 | Dark | Down | 66.8 | 77.8 | Up | 06:40:43 - 07:13:06 | -434 |
| Tonasket | 06:56:55 | -50.0 | Dark | Down | 66.8 | 77.3 | Up | 06:40:44 - 07:13:07 | -458 |
| Okanogan | 06:56:56 | -50.3 | Dark | Down | 66.6 | 76.5 | Up | 06:40:45 - 07:13:08 | -489 |
| Brewster | 06:56:58 | -50.5 | Dark | Down | 66.4 | 75.8 | Up | 06:40:46 - 07:13:09 | -511 |
| Manson/Chelan | 06:56:59 | -50.6 | Dark | Down | 66.1 | 75.2 | Up | 06:40:48 - 07:13:11 | -522 |
| Entiat | 06:57:00 | -50.8 | Dark | Down | 66.0 | 74.7 | Up | 06:40:48 - 07:13:11 | -543 |
| Wenatchee | 06:57:01 | -51.0 | Dark | Down | 65.9 | 74.1 | Up | 06:40:50 - 07:13:13 | -566 |
| Ellensburg | 06:57:03 | -51.4 | Dark | Down | 65.6 | 73.2 | Up | 06:40:51 - 07:13:14 | -602 |
| Yakima | 06:57:03 | -51.8 | Dark | Down | 65.5 | 72.3 | Up | 06:40:52 - 07:13:15 | -643 |
| Toppenish/White Swan | 06:57:03 | -52.0 | Dark | Down | 65.6 | 71.9 | Up | 06:40:52 - 07:13:15 | -670 |
| Pasco | 06:56:59 | -52.4 | Dark | Down | 66.3 | 72.0 | Up | 06:40:48 - 07:13:11 | -720 |
| Pacific NW Region. Obs. | 06:56:59 | -52.7 | Dark | Down | 66.4 | 71.5 | Up | 06:40:47 - 07:13:10 | -752 |
| Umatilla | 06:57:01 | -52.7 | Dark | Down | 66.1 | 71.2 | Up | 06:40:49 - 07:13:12 | -748 |
| Goldendale | 06:57:06 | -52.4 | Dark | Down | 65.1 | 70.7 | Up | 06:40:54 - 07:13:17 | -714 |
| The Dalles | 06:57:07 | -52.5 | Dark | Down | 64.8 | 70.1 | Up | 06:40:56 - 07:13:19 | -726 |
| Maupin | 06:57:08 | -53.0 | Dark | Down | 64.7 | 69.3 | Up | 06:40:56 - 07:13:19 | -772 |
| Madras/Culver | 06:57:09 | -53.5 | Dark | Down | 64.5 | 68.2 | Up | 06:40:58 - 07:13:21 | -827 |
| Sisters | 06:57:11 | -53.6 | Dark | Down | 64.1 | 67.5 | Up | 06:41:00 - 07:13:23 | -847 |
| Redmond | 06:57:10 | -53.8 | Dark | Down | 64.3 | 67.5 | Up | 06:40:58 - 07:13:21 | -862 |
| Bend | 06:57:11 | -53.9 | Dark | Down | 64.2 | 67.1 | Up | 06:40:59 - 07:13:22 | -879 |
| Oregon Observatory | 06:57:12 | -54.1 | Dark | Down | 64.0 | 66.8 | Up | 06:41:00 - 07:13:23 | -893 |
| LaPine/Gilchrist | 06:57:13 | -54.2 | Dark | Down | 63.9 | 66.4 | Up | 06:41:01 - 07:13:24 | -912 |
| North Lake | 06:57:11 | -54.8 | Dark | Down | 64.1 | 65.6 | Up | 06:41:00 - 07:13:23 | -976 |
| Paisley | 06:57:11 | -55.4 | Dark | Down | 64.1 | 64.6 | Up | 06:40:59 - 07:13:22 | -1043 |
| Chiloquin | 06:57:16 | -55.2 | Dark | Down | 63.2 | 64.3 | Up | 06:41:05 - 07:13:28 | -1014 |
| Klamath Falls | 06:57:17 | -55.5 | Dark | Down | 63.1 | 63.7 | Up | 06:41:05 - 07:13:28 | -1052 |
| Lakeview | 06:57:11 | -55.9 | Dark | Down | 64.0 | 63.7 | Up | 06:41:00 - 07:13:23 | -1102 |
| Tulelake | 06:57:16 | -55.8 | Dark | Down | 63.2 | 63.3 | Up | 06:41:05 - 07:13:28 | -1089 |
| Cedarville | 06:57:12 | -56.6 | Dark | Down | 63.8 | 62.5 | Up | 06:41:01 - 07:13:24 | -1175 |
| Fall River/Burney | 06:57:17 | -56.7 | Dark | Down | 62.8 | 61.7 | Up | 06:41:06 - 07:13:29 | -1184 |
| Susanville | 06:57:16 | -57.5 | Dark | Down | 63.0 | 60.5 | Up | 06:41:05 - 07:13:28 | -1273 |
| Greenville | 06:57:17 | -57.7 | Dark | Down | 62.7 | 60.1 | Up | 06:41:06 - 07:13:29 | -1292 |
| Niwot | 06:56:14 | -59.7 | Dark | Down | 72.7 | 54.3 | Up | 06:40:03 - 07:12:26 | -1696 |
| Quincy | 06:57:18 | -57.8 | Dark | Down | 62.6 | 59.8 | Up | 06:41:06 - 07:13:29 | -1312 |
| Portola | 06:57:16 | -58.1 | Dark | Down | 62.8 | 59.5 | Up | 06:41:05 - 07:13:28 | -1341 |
| Reno | 06:57:14 | -58.5 | Dark | Down | 63.1 | 59.0 | Up | 06:41:03 - 07:13:26 | -1389 |
| Carson City | 06:57:15 | -58.9 | Dark | Down | 62.9 | 58.4 | Up | 06:41:03 - 07:13:26 | -1427 |
| Yerington | 06:57:13 | -59.2 | Dark | Down | 63.2 | 57.9 | Up | 06:41:01 - 07:13:24 | -1467 |
| Gardnerville | 06:57:15 | -59.1 | Dark | Down | 62.8 | 57.9 | Up | 06:41:04 - 07:13:27 | -1454 |
| Hawthorne | 06:57:11 | -59.8 | Dark | Down | 63.3 | 57.0 | Up | 06:41:00 - 07:13:23 | -1532 |
| Lee Vining | 06:57:14 | -60.2 | Dark | Down | 62.7 | 56.2 | Up | 06:41:03 - 07:13:26 | -1575 |
| Tonopah | 06:57:06 | -60.6 | Dark | Down | 64.0 | 55.9 | Up | 06:40:55 - 07:13:18 | -1624 |
| Bishop | 06:57:12 | -61.0 | Dark | Down | 62.8 | 55.1 | Up | 06:41:01 - 07:13:24 | -1659 |
| Lone Pine | 06:57:12 | -61.8 | Dark | Down | 62.6 | 53.8 | Up | 06:41:01 - 07:13:24 | -1748 |
| Beatty | 06:57:06 | -61.9 | Dark | Down | 63.6 | 53.8 | Up | 06:40:55 - 07:13:18 | -1758 |
| Indian Springs | 06:57:03 | -62.4 | Dark | Down | 64.1 | 52.9 | Up | 06:40:51 - 07:13:14 | -1824 |
| Henderson | 06:57:01 | -63.1 | Dark | Down | 64.2 | 51.7 | Up | 06:40:50 - 07:13:13 | -1899 |
| Searchlight/Boulder City | 06:57:02 | -63.7 | Dark | Down | 63.9 | 50.8 | Up | 06:40:50 - 07:13:13 | -1961 |
| San Luis Obispo | 06:57:25 | -62.1 | Dark | Down | 60.2 | 52.6 | Up | 06:41:13 - 07:13:36 | -1793 |
| Kingman/Dolan Springs | 06:56:58 | -64.1 | Dark | Down | 64.3 | 49.9 | Up | 06:40:47 - 07:13:10 | -2014 |
| Laughlin/Bullhead City | 06:57:00 | -64.0 | Dark | Down | 63.9 | 50.1 | Up | 06:40:48 - 07:13:11 | -2001 |
| DCO | 06:56:55 | -64.3 | Dark | Down | 64.8 | 49.3 | Up | 06:40:43 - 07:13:06 | -2048 |
| Mohave Valley | 06:57:01 | -64.3 | Dark | Down | 63.8 | 49.7 | Up | 06:40:49 - 07:13:12 | -2030 |
| Lake Havasu City | 06:57:00 | -64.7 | Dark | Down | 63.7 | 49.0 | Up | 06:40:48 - 07:13:11 | -2078 |
| Parker | 06:57:01 | -65.1 | Dark | Down | 63.4 | 48.4 | Up | 06:40:49 - 07:13:12 | -2115 |
| Idyllwild | 06:57:11 | -64.9 | Dark | Down | 61.7 | 49.0 | Up | 06:40:59 - 07:13:22 | -2084 |
| Blythe | 06:57:02 | -65.5 | Dark | Down | 62.9 | 47.8 | Up | 06:40:51 - 07:13:14 | -2161 |
| Calipatria | 06:57:06 | -65.8 | Dark | Down | 62.0 | 47.6 | Up | 06:40:55 - 07:13:18 | -2183 |
| Yuma | 06:57:03 | -66.4 | Dark | Down | 62.3 | 46.5 | Up | 06:40:52 - 07:13:15 | -2254 |
Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.
Event circumstances last updated at 2015/10/09 16:32:53 UT
Marc W. Buie, Southwest Research Institute