Event between (307982) 04PG115 and star UC4-475-128168 with event index number of 91296
Geocentric closest approach at 2017/11/13 04:11:03 UTC
J2000 position of star is 22:02:00.3 +04:50:48
Equinox of date position of star is 22:02:51.0 +04:55:41
Stellar brightness R=13.7
Star is 156 degrees from the moon.
Moon is 26% illuminated.
TNO apparent brightness V=20.8
[RECON map]
TNO is 38.2 AU from the Sun
and 38.0 AU from the Earth.
The TNO is moving 8.4
km/sec on the sky relative to the star, or,
1.1 arcsec/hr.
The 1-sigma error in the time of the event is 172 seconds.
The 1-sigma cross-track error in the shadow position is
1938 km.
The sky-plane scale is
27538.6 km/arcsec.
The TNO has an absolute magnitude Hv=4.8
Diameter=660.7 km assuming a 5% albedo -- 74.8 sec chord
Diameter=269.7 km assuming a 30% albedo -- 30.5 sec chord
Dynamical classification is SCATNEAR
Star training set for 307982, (2017/11/13 04:11UT) Object RA Dec mag sep mel Fomalhaut 22:58:38.0 -29:31:38 1.2 36.96 156 Markab 23:05:39.1 +15:18:06 2.5 18.58 158 18 Peg 22:01:01.5 +06:48:14 5.8 1.93 155 PPM 172609 22:04:41.5 +04:52:43 8.0 0.45 157 PPM 172559 22:02:09.1 +04:49:23 9.7 0.22 156 PPM 172562 22:02:34.6 +04:58:12 10.2 0.09 156 307982 22:02:54.3 +04:56:00 13.7 156 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 6.3 km
RECON observability=1.0 and success probability=2.3%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Niwot | 04:05:06 | -49.2 | Dark | Down | 40.9 | 234.4 | Up | 03:50:15 - 04:19:57 | 6163 |
| DCO | 04:05:49 | -44.5 | Dark | Down | 48.8 | 229.7 | Up | 03:50:58 - 04:20:40 | 5663 |
| Patrick | 04:05:44 | -43.8 | Dark | Down | 49.1 | 228.6 | Up | 03:50:53 - 04:20:35 | 5605 |
| Kingman/Dolan Springs | 04:05:48 | -43.7 | Dark | Down | 49.3 | 228.6 | Up | 03:50:57 - 04:20:39 | 5592 |
| Parker | 04:05:59 | -43.7 | Dark | Down | 50.1 | 229.3 | Up | 03:51:08 - 04:20:50 | 5581 |
| Lake Havasu City | 04:05:55 | -43.6 | Dark | Down | 49.9 | 228.9 | Up | 03:51:04 - 04:20:46 | 5576 |
| Yuma | 04:06:16 | -43.7 | Dark | Down | 51.2 | 230.3 | Up | 03:51:25 - 04:21:07 | 5562 |
| Blythe | 04:06:06 | -43.6 | Dark | Down | 50.6 | 229.4 | Up | 03:51:15 - 04:20:57 | 5560 |
| Mohave Valley | 04:05:49 | -43.4 | Dark | Down | 49.8 | 228.2 | Up | 03:50:58 - 04:20:40 | 5554 |
| Laughlin/Bullhead City | 04:05:46 | -43.3 | Dark | Down | 49.7 | 227.9 | Up | 03:50:55 - 04:20:37 | 5551 |
| Searchlight/Boulder City | 04:05:41 | -43.0 | Dark | Down | 49.7 | 227.2 | Up | 03:50:50 - 04:20:32 | 5522 |
| Henderson | 04:05:34 | -42.8 | Dark | Down | 49.3 | 226.6 | Up | 03:50:43 - 04:20:25 | 5513 |
| Calipatria | 04:06:08 | -42.9 | Dark | Down | 51.5 | 228.7 | Up | 03:51:17 - 04:20:59 | 5488 |
| Indian Springs | 04:05:27 | -42.2 | Dark | Down | 49.4 | 225.3 | Up | 03:50:36 - 04:20:18 | 5455 |
| Idyllwild | 04:05:59 | -41.8 | Dark | Down | 51.9 | 226.6 | Up | 03:51:08 - 04:20:50 | 5389 |
| Beatty | 04:05:21 | -41.2 | Dark | Down | 49.8 | 223.6 | Up | 03:50:30 - 04:20:12 | 5368 |
| Tonopah | 04:05:07 | -40.7 | Dark | Down | 49.2 | 222.0 | Up | 03:50:16 - 04:19:58 | 5325 |
| Lone Pine | 04:05:22 | -40.2 | Dark | Down | 50.7 | 222.2 | Up | 03:50:31 - 04:20:13 | 5267 |
| Bishop | 04:05:12 | -39.8 | Dark | Down | 50.3 | 221.0 | Up | 03:50:21 - 04:20:03 | 5237 |
| Wildwood | 04:05:51 | -40.2 | Dark | Down | 52.8 | 223.8 | Up | 03:51:00 - 04:20:42 | 5234 |
| Hawthorne | 04:05:04 | -39.5 | Dark | Down | 49.6 | 219.8 | Up | 03:50:13 - 04:19:55 | 5212 |
| Lee Vining | 04:05:06 | -39.2 | Dark | Down | 50.3 | 219.6 | Up | 03:50:15 - 04:19:57 | 5177 |
| Yerington | 04:04:53 | -39.0 | Dark | Down | 49.5 | 218.7 | Up | 03:50:02 - 04:19:44 | 5168 |
| PNWRO | 04:03:41 | -37.6 | Dark | Down | 43.9 | 214.2 | Up | 03:48:50 - 04:18:32 | 5126 |
| Gardnerville | 04:04:52 | -38.5 | Dark | Down | 49.8 | 217.9 | Up | 03:50:01 - 04:19:43 | 5122 |
| Carson City | 04:04:49 | -38.4 | Dark | Down | 49.7 | 217.7 | Up | 03:49:58 - 04:19:40 | 5118 |
| Reno | 04:04:45 | -38.4 | Dark | Down | 49.4 | 217.3 | Up | 03:49:54 - 04:19:36 | 5114 |
| Pasco | 04:03:41 | -37.4 | Dark | Down | 43.8 | 213.8 | Up | 03:48:50 - 04:18:32 | 5107 |
| George/Umatilla | 04:03:36 | -37.3 | Dark | Down | 44.1 | 213.6 | Up | 03:48:45 - 04:18:27 | 5095 |
| Cedarville | 04:04:22 | -37.7 | Dark | Down | 48.0 | 215.4 | Up | 03:49:31 - 04:19:13 | 5074 |
| Portola | 04:04:40 | -37.8 | Dark | Down | 49.5 | 216.2 | Up | 03:49:49 - 04:19:31 | 5062 |
| CPSLO | 04:05:32 | -38.3 | Dark | Down | 53.0 | 219.7 | Up | 03:50:41 - 04:20:23 | 5061 |
| Lakeview | 04:04:17 | -37.5 | Dark | Down | 47.6 | 214.7 | Up | 03:49:26 - 04:19:08 | 5057 |
| Tonasket | 04:03:10 | -36.5 | Dark | Down | 41.9 | 212.0 | Up | 03:48:19 - 04:18:01 | 5056 |
| Oroville | 04:03:13 | -36.4 | Dark | Down | 41.7 | 211.9 | Up | 03:48:22 - 04:18:04 | 5053 |
| Okanogan | 04:03:13 | -36.5 | Dark | Down | 42.2 | 212.0 | Up | 03:48:22 - 04:18:04 | 5050 |
| Susanville | 04:04:33 | -37.6 | Dark | Down | 49.1 | 215.5 | Up | 03:49:42 - 04:19:24 | 5044 |
| Brewster | 04:03:13 | -36.4 | Dark | Down | 42.5 | 211.9 | Up | 03:48:22 - 04:18:04 | 5040 |
| Paisley | 04:04:13 | -37.2 | Dark | Down | 47.2 | 214.1 | Up | 03:49:22 - 04:19:04 | 5038 |
| Quincy | 04:04:38 | -37.4 | Dark | Down | 49.6 | 215.5 | Up | 03:49:47 - 04:19:29 | 5024 |
| Greenville | 04:04:36 | -37.4 | Dark | Down | 49.5 | 215.3 | Up | 03:49:45 - 04:19:27 | 5023 |
| Manson/Chelan | 04:03:14 | -36.2 | Dark | Down | 42.8 | 211.5 | Up | 03:48:23 - 04:18:05 | 5018 |
| Toppenish/White Swan | 04:03:31 | -36.5 | Dark | Down | 44.1 | 212.0 | Up | 03:48:40 - 04:18:22 | 5017 |
| Entiat | 04:03:19 | -36.3 | Dark | Down | 43.0 | 211.5 | Up | 03:48:28 - 04:18:10 | 5015 |
| Wenatchee | 04:03:27 | -36.3 | Dark | Down | 43.3 | 211.6 | Up | 03:48:36 - 04:18:18 | 5011 |
| North Lake | 04:04:02 | -36.8 | Dark | Down | 46.9 | 213.3 | Up | 03:49:11 - 04:18:53 | 5008 |
| Yakima | 04:03:31 | -36.3 | Dark | Down | 44.0 | 211.7 | Up | 03:48:40 - 04:18:22 | 5003 |
| Ellensburg | 04:03:24 | -36.2 | Dark | Down | 43.7 | 211.5 | Up | 03:48:33 - 04:18:15 | 5001 |
| Goldendale | 04:03:40 | -36.3 | Dark | Down | 44.8 | 211.8 | Up | 03:48:49 - 04:18:31 | 4993 |
| Fall River/Burney | 04:04:25 | -36.9 | Dark | Down | 48.9 | 214.1 | Up | 03:49:34 - 04:19:16 | 4984 |
| Madras/Culver | 04:03:48 | -36.4 | Dark | Down | 45.9 | 212.1 | Up | 03:48:57 - 04:18:39 | 4981 |
| Redmond | 04:03:54 | -36.4 | Dark | Down | 46.2 | 212.3 | Up | 03:49:03 - 04:18:45 | 4980 |
| Maupin | 04:03:45 | -36.3 | Dark | Down | 45.4 | 211.8 | Up | 03:48:54 - 04:18:36 | 4980 |
| Tulelake | 04:04:17 | -36.7 | Dark | Down | 48.2 | 213.3 | Up | 03:49:26 - 04:19:08 | 4973 |
| Bend | 04:03:52 | -36.4 | Dark | Down | 46.4 | 212.2 | Up | 03:49:01 - 04:18:43 | 4972 |
| The Dalles | 04:03:38 | -36.1 | Dark | Down | 45.1 | 211.4 | Up | 03:48:47 - 04:18:29 | 4969 |
| Oregon Observatory | 04:03:56 | -36.3 | Dark | Down | 46.6 | 212.1 | Up | 03:49:05 - 04:18:47 | 4964 |
| La Pine/Gilchrist | 04:03:56 | -36.3 | Dark | Down | 46.8 | 212.2 | Up | 03:49:05 - 04:18:47 | 4960 |
| Sisters | 04:03:55 | -36.1 | Dark | Down | 46.3 | 211.7 | Up | 03:49:04 - 04:18:46 | 4951 |
| Klamath Falls | 04:04:13 | -36.4 | Dark | Down | 48.1 | 212.7 | Up | 03:49:22 - 04:19:04 | 4949 |
| Chiloquin | 04:04:08 | -36.3 | Dark | Down | 47.9 | 212.4 | Up | 03:49:17 - 04:18:59 | 4941 |
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.
Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.
Star training set for 307982, (2017/11/13 04:11UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.5 -29:37:23 1.2 36.96 156 Markab 23:04:45.7 +15:12:18 2.5 18.58 158 18 Peg 22:00:07.9 +06:43:03 5.8 1.93 155 PPM 172609 22:03:47.5 +04:47:30 8.0 0.45 157 PPM 172559 22:01:15.2 +04:44:11 9.7 0.22 156 PPM 172562 22:01:40.6 +04:53:00 10.2 0.09 156 307982 22:02:00.3 +04:50:48 13.7 156 Positions are for J2000
Event circumstances last updated at 2016/10/08 16:38:46 UT
Marc W. Buie, Southwest Research Institute