Event between (450265) 03WU172 and star UC4-585-035201 with event index number of 125096
Geocentric closest approach at 2017/09/07 10:43:29 UTC
J2000 position of star is 06:56:02.0 +26:55:00
Equinox of date position of star is 06:57:04.6 +26:53:38
Stellar brightness R=16.1
Star is 103 degrees from the moon.
Moon is 98% illuminated.
TNO apparent brightness V=21.5
[RECON map]
TNO is 29.3 AU from the Sun
and 29.7 AU from the Earth.
The TNO is moving 19.6
km/sec on the sky relative to the star, or,
3.3 arcsec/hr.
The 1-sigma error in the time of the event is 154 seconds.
The 1-sigma cross-track error in the shadow position is
1143 km.
The sky-plane scale is
21552.2 km/arcsec.
The TNO has an absolute magnitude Hv=6.6
Diameter=288.4 km assuming a 5% albedo -- 16.9 sec chord
Diameter=117.7 km assuming a 30% albedo -- 6.9 sec chord
Dynamical classification is 3:2E
Star training set for 450265, (2017/09/07 10:43UT) Object RA Dec mag sep mel Pollux 07:46:23.8 +27:58:56 1.1 10.98 114 39 Gem 06:59:52.7 +26:03:22 6.5 1.04 104 PPM 096719 06:55:34.9 +26:30:26 7.9 0.52 103 PPM 096769 06:57:25.4 +26:50:50 10.0 0.08 103 PPM 096753 06:56:50.6 +26:53:33 11.2 0.06 103 450265 06:57:08.0 +26:53:33 16.1 104 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 18.6 km
RECON observability=1.0 and success probability=0.0%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Oroville | 10:40:03 | -24.5 | Dark | Up | 28.4 | 80.6 | Low | 10:26:43 - 10:53:22 | 7259 |
| Tonasket | 10:40:02 | -24.7 | Dark | Up | 28.4 | 80.5 | Low | 10:26:42 - 10:53:21 | 7242 |
| Okanogan | 10:40:01 | -25.0 | Dark | Up | 28.2 | 80.2 | Low | 10:26:41 - 10:53:20 | 7222 |
| Brewster | 10:40:00 | -25.3 | Dark | Up | 28.0 | 79.9 | Low | 10:26:40 - 10:53:19 | 7209 |
| Manson/Chelan | 10:39:58 | -25.6 | Dark | Up | 27.7 | 79.6 | Low | 10:26:39 - 10:53:18 | 7205 |
| Entiat | 10:39:58 | -25.8 | Dark | Up | 27.7 | 79.4 | Low | 10:26:38 - 10:53:17 | 7191 |
| Wenatchee | 10:39:56 | -26.0 | Dark | Up | 27.5 | 79.2 | Low | 10:26:37 - 10:53:16 | 7176 |
| Ellensburg | 10:39:55 | -26.4 | Dark | Up | 27.3 | 78.9 | Low | 10:26:35 - 10:53:14 | 7152 |
| Yakima | 10:39:53 | -26.7 | Dark | Up | 27.2 | 78.6 | Low | 10:26:34 - 10:53:13 | 7122 |
| Toppenish/White Swan | 10:39:52 | -26.8 | Dark | Up | 27.3 | 78.6 | Low | 10:26:33 - 10:53:12 | 7100 |
| Goldendale | 10:39:49 | -27.4 | Dark | Up | 26.9 | 78.1 | Low | 10:26:30 - 10:53:09 | 7072 |
| The Dalles | 10:39:48 | -27.7 | Dark | Up | 26.6 | 77.7 | Low | 10:26:29 - 10:53:08 | 7068 |
| Pasco | 10:39:54 | -26.2 | Dark | Up | 28.1 | 79.4 | Low | 10:26:34 - 10:53:13 | 7047 |
| Maupin | 10:39:47 | -28.0 | Dark | Up | 26.6 | 77.6 | Low | 10:26:27 - 10:53:06 | 7032 |
| George/Umatilla | 10:39:51 | -26.6 | Dark | Up | 27.9 | 79.1 | Low | 10:26:32 - 10:53:11 | 7029 |
| PNWRO | 10:39:52 | -26.3 | Dark | Up | 28.2 | 79.4 | Low | 10:26:32 - 10:53:11 | 7020 |
| Madras/Culver | 10:39:44 | -28.4 | Dark | Up | 26.4 | 77.3 | Low | 10:26:25 - 10:53:04 | 6992 |
| Sisters | 10:39:43 | -28.8 | Dark | Up | 26.0 | 76.8 | Low | 10:26:24 - 10:53:03 | 6982 |
| Redmond | 10:39:43 | -28.7 | Dark | Up | 26.3 | 77.1 | Low | 10:26:24 - 10:53:03 | 6966 |
| Bend | 10:39:42 | -28.9 | Dark | Up | 26.1 | 76.9 | Low | 10:26:22 - 10:53:01 | 6954 |
| Oregon Observatory | 10:39:41 | -29.1 | Dark | Up | 26.0 | 76.7 | Low | 10:26:21 - 10:53:00 | 6946 |
| La Pine/Gilchrist | 10:39:40 | -29.2 | Dark | Up | 25.9 | 76.6 | Low | 10:26:21 - 10:53:00 | 6932 |
| North Lake | 10:39:39 | -29.2 | Dark | Up | 26.2 | 76.7 | Low | 10:26:20 - 10:52:59 | 6876 |
| Chiloquin | 10:39:36 | -30.2 | Dark | Up | 25.4 | 75.8 | Low | 10:26:16 - 10:52:55 | 6857 |
| Klamath Falls | 10:39:35 | -30.4 | Dark | Up | 25.3 | 75.7 | Low | 10:26:15 - 10:52:54 | 6827 |
| Paisley | 10:39:37 | -29.4 | Dark | Up | 26.3 | 76.7 | Low | 10:26:18 - 10:52:57 | 6819 |
| Tulelake | 10:39:34 | -30.4 | Dark | Up | 25.5 | 75.8 | Low | 10:26:14 - 10:52:53 | 6795 |
| Lakeview | 10:39:36 | -29.7 | Dark | Up | 26.4 | 76.5 | Low | 10:26:16 - 10:52:55 | 6772 |
| Fall River/Burney | 10:39:31 | -31.0 | Dark | Up | 25.3 | 75.4 | Low | 10:26:11 - 10:52:50 | 6719 |
| Cedarville | 10:39:33 | -30.0 | Dark | Up | 26.3 | 76.3 | Low | 10:26:14 - 10:52:53 | 6712 |
| Susanville | 10:39:29 | -31.0 | Dark | Up | 25.7 | 75.5 | Low | 10:26:10 - 10:52:49 | 6640 |
| Greenville | 10:39:28 | -31.4 | Dark | Up | 25.4 | 75.2 | Low | 10:26:08 - 10:52:47 | 6628 |
| Quincy | 10:39:27 | -31.5 | Dark | Up | 25.4 | 75.1 | Low | 10:26:08 - 10:52:47 | 6611 |
| Portola | 10:39:27 | -31.3 | Dark | Up | 25.7 | 75.3 | Low | 10:26:07 - 10:52:46 | 6583 |
| Reno | 10:39:26 | -31.1 | Dark | Up | 26.1 | 75.6 | Low | 10:26:07 - 10:52:46 | 6536 |
| Carson City | 10:39:26 | -31.4 | Dark | Up | 26.0 | 75.4 | Low | 10:26:06 - 10:52:45 | 6505 |
| Gardnerville | 10:39:24 | -31.5 | Dark | Up | 26.0 | 75.3 | Low | 10:26:05 - 10:52:44 | 6483 |
| Yerington | 10:39:25 | -31.1 | Dark | Up | 26.4 | 75.6 | Low | 10:26:06 - 10:52:45 | 6465 |
| Hawthorne | 10:39:24 | -31.1 | Dark | Up | 26.7 | 75.7 | Low | 10:26:05 - 10:52:44 | 6405 |
| Lee Vining | 10:39:22 | -31.8 | Dark | Up | 26.2 | 75.2 | Low | 10:26:03 - 10:52:42 | 6377 |
| Tonopah | 10:39:25 | -30.5 | Dark | Up | 27.7 | 76.2 | Low | 10:26:05 - 10:52:44 | 6311 |
| Bishop | 10:39:20 | -31.7 | Dark | Up | 26.6 | 75.2 | Low | 10:26:01 - 10:52:40 | 6297 |
| Lone Pine | 10:39:18 | -32.0 | Dark | Up | 26.7 | 75.0 | Low | 10:25:59 - 10:52:38 | 6218 |
| CPSLO | 10:39:12 | -34.4 | Dark | Up | 24.3 | 73.2 | Low | 10:25:52 - 10:52:31 | 6209 |
| Beatty | 10:39:21 | -30.9 | Dark | Up | 27.8 | 75.8 | Low | 10:26:01 - 10:52:40 | 6193 |
| Indian Springs | 10:39:21 | -30.4 | Dark | Up | 28.5 | 76.2 | Low | 10:26:01 - 10:52:40 | 6123 |
| Niwot | 10:39:51 | -21.5 | Dark | Up | 37.3 | 84.1 | Up | 10:26:31 - 10:53:10 | 6052 |
| Henderson | 10:39:21 | -30.3 | Dark | Up | 28.9 | 76.3 | Low | 10:26:01 - 10:52:40 | 6048 |
| Wildwood | 10:39:11 | -33.9 | Dark | Up | 25.5 | 73.6 | Low | 10:25:51 - 10:52:30 | 6020 |
| Searchlight/Boulder City | 10:39:18 | -30.6 | Dark | Up | 28.8 | 76.0 | Low | 10:25:59 - 10:52:38 | 5995 |
| Laughlin/Bullhead City | 10:39:18 | -30.5 | Dark | Up | 29.0 | 76.0 | Low | 10:25:59 - 10:52:38 | 5954 |
| Patrick | 10:39:20 | -29.9 | Dark | Up | 29.7 | 76.4 | Low | 10:26:00 - 10:52:39 | 5949 |
| Kingman/Dolan Springs | 10:39:19 | -30.2 | Dark | Up | 29.5 | 76.2 | Low | 10:25:59 - 10:52:38 | 5936 |
| Mohave Valley | 10:39:18 | -30.7 | Dark | Up | 29.0 | 75.8 | Low | 10:25:58 - 10:52:37 | 5930 |
| Idyllwild | 10:39:11 | -32.8 | Dark | Up | 26.9 | 74.3 | Low | 10:25:52 - 10:52:31 | 5912 |
| DCO | 10:39:20 | -29.6 | Dark | Up | 30.2 | 76.6 | Up | 10:26:01 - 10:52:40 | 5893 |
| Lake Havasu City | 10:39:17 | -30.7 | Dark | Up | 29.1 | 75.7 | Low | 10:25:57 - 10:52:36 | 5884 |
| Parker | 10:39:16 | -30.9 | Dark | Up | 29.0 | 75.6 | Low | 10:25:56 - 10:52:35 | 5851 |
| Blythe | 10:39:13 | -31.4 | Dark | Up | 28.6 | 75.1 | Low | 10:25:54 - 10:52:33 | 5815 |
| Calipatria | 10:39:11 | -32.3 | Dark | Up | 27.7 | 74.5 | Low | 10:25:52 - 10:52:31 | 5808 |
| Yuma | 10:39:11 | -32.0 | Dark | Up | 28.3 | 74.6 | Low | 10:25:52 - 10:52:31 | 5733 |
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 450265, (2017/09/07 10:43UT) Object RA Dec mag sep mel Pollux 07:45:18.2 +28:01:33 1.1 10.98 114 39 Gem 06:58:47.2 +26:04:53 6.5 1.04 104 PPM 096719 06:54:29.1 +26:31:50 7.9 0.52 103 PPM 096769 06:56:19.4 +26:52:17 10.0 0.08 103 PPM 096753 06:55:44.6 +26:54:59 11.2 0.06 103 450265 06:56:02.0 +26:55:00 16.1 103 Positions are for J2000
Event circumstances last updated at 2016/10/08 16:37:40 UT
Marc W. Buie, Southwest Research Institute