Event between (450265) 03WU172 and star GA1160:02686653 with event index number of 172985
Geocentric closest approach at 2019/01/01 13:16:36 UTC
J2000 position of star is 07:03:51.0 +26:56:09
Equinox of date position of star is 07:05:01.6 +26:54:24
Stellar brightness G=16.4,
use SENSEUP=128
Star is 125 degrees from the moon.
Moon is 19% illuminated.
TNO apparent brightness V=20.9
[RECON map]
TNO is 29.2 AU from the Sun
and 28.2 AU from the Earth.
The TNO is moving 24.1
km/sec on the sky relative to the star, or,
4.2 arcsec/hr.
The 1-sigma error in the time of the event is 180 seconds.
The 1-sigma cross-track error in the shadow position is
1266 km.
The sky-plane scale is
20473.8 km/arcsec.
The TNO has an absolute magnitude Hv=6.3
Diameter=331.1 km assuming a 5% albedo -- 13.8 sec chord
Diameter=135.2 km assuming a 30% albedo -- 5.6 sec chord
Dynamical classification is 3:2E
Star training set for 450265, (2019/01/01 13:17UT) Object RA Dec mag sep mel Pollux 07:46:28.6 +27:58:44 1.1 9.25 115 39 Gem 06:59:57.6 +26:03:16 6.5 1.42 126 PPM 096908 07:02:46.7 +26:32:42 8.4 0.62 125 PPM 096961 07:04:47.7 +26:58:34 9.1 0.09 125 450265 07:05:01.9 +26:54:23 16.4 124 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 13.1 km
RECON observability=1.0 and success probability=9.4%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kelowna | 13:14:11 | -24.8 | Dark | Up | 30.3 | 277.0 | Up | 12:59:11 - 13:29:11 | 3124 |
| Summerland | 13:14:11 | -25.0 | Dark | Up | 30.5 | 276.7 | Up | 12:59:11 - 13:29:11 | 3109 |
| Penticton | 13:14:10 | -24.8 | Dark | Up | 30.3 | 277.1 | Up | 12:59:10 - 13:29:10 | 3095 |
| Okanagan Falls | 13:14:09 | -24.8 | Dark | Up | 30.3 | 277.2 | Up | 12:59:09 - 13:29:09 | 3081 |
| Oliver | 13:14:08 | -24.8 | Dark | Up | 30.3 | 277.3 | Up | 12:59:08 - 13:29:08 | 3071 |
| Anarchist Mountain Observatory | 13:14:07 | -24.7 | Dark | Up | 30.1 | 277.5 | Up | 12:59:07 - 13:29:07 | 3066 |
| Oroville | 13:14:07 | -24.7 | Dark | Up | 30.2 | 277.5 | Up | 12:59:07 - 13:29:07 | 3059 |
| Tonasket | 13:14:06 | -24.7 | Dark | Up | 30.1 | 277.6 | Up | 12:59:06 - 13:29:06 | 3044 |
| Okanogan | 13:14:06 | -24.7 | Dark | Up | 30.2 | 277.7 | Up | 12:59:06 - 13:29:06 | 3016 |
| Brewster | 13:14:05 | -24.8 | Dark | Up | 30.3 | 277.7 | Up | 12:59:05 - 13:29:05 | 2991 |
| Niwot | 13:13:31 | -12.9 | AT | Up | 18.3 | 290.2 | Really Low | 12:58:31 - 13:28:31 | 2986 |
| Manson/Chelan | 13:14:04 | -25.0 | Dark | Up | 30.5 | 277.6 | Up | 12:59:04 - 13:29:04 | 2964 |
| Entiat | 13:14:04 | -25.1 | Dark | Up | 30.5 | 277.7 | Up | 12:59:04 - 13:29:04 | 2946 |
| Wenatchee | 13:14:03 | -25.1 | Dark | Up | 30.6 | 277.7 | Up | 12:59:03 - 13:29:03 | 2925 |
| Ellensburg | 13:14:01 | -25.2 | Dark | Up | 30.7 | 277.8 | Up | 12:59:01 - 13:29:01 | 2889 |
| Pasco | 13:13:57 | -24.1 | Dark | Up | 29.6 | 279.2 | Low | 12:58:57 - 13:28:57 | 2888 |
| PNWRO | 13:13:56 | -24.0 | Dark | Up | 29.4 | 279.5 | Low | 12:58:56 - 13:28:56 | 2879 |
| Yakima | 13:14:00 | -25.2 | Dark | Up | 30.6 | 278.1 | Up | 12:59:00 - 13:29:00 | 2860 |
| George/Umatilla | 13:13:56 | -24.2 | Dark | Up | 29.7 | 279.2 | Low | 12:58:56 - 13:28:56 | 2856 |
| Toppenish/White Swan | 13:13:59 | -25.0 | Dark | Up | 30.5 | 278.3 | Up | 12:58:59 - 13:28:59 | 2851 |
| Goldendale | 13:13:57 | -25.3 | Dark | Up | 30.7 | 278.3 | Up | 12:58:57 - 13:28:57 | 2796 |
| The Dalles | 13:13:57 | -25.5 | Dark | Up | 30.9 | 278.2 | Up | 12:58:57 - 13:28:57 | 2767 |
| Maupin | 13:13:55 | -25.3 | Dark | Up | 30.8 | 278.5 | Up | 12:58:55 - 13:28:55 | 2741 |
| Madras/Culver | 13:13:54 | -25.3 | Dark | Up | 30.7 | 278.8 | Up | 12:58:54 - 13:28:54 | 2700 |
| Redmond | 13:13:52 | -25.3 | Dark | Up | 30.7 | 279.0 | Up | 12:58:52 - 13:28:52 | 2672 |
| Sisters | 13:13:53 | -25.6 | Dark | Up | 31.0 | 278.7 | Up | 12:58:53 - 13:28:53 | 2659 |
| Bend | 13:13:52 | -25.4 | Dark | Up | 30.8 | 279.0 | Up | 12:58:52 - 13:28:52 | 2651 |
| Oregon Observatory | 13:13:51 | -25.4 | Dark | Up | 30.9 | 279.1 | Up | 12:58:51 - 13:28:51 | 2633 |
| La Pine/Gilchrist | 13:13:51 | -25.5 | Dark | Up | 30.9 | 279.1 | Up | 12:58:51 - 13:28:51 | 2616 |
| North Lake | 13:13:48 | -25.0 | Dark | Up | 30.4 | 279.8 | Up | 12:58:48 - 13:28:48 | 2606 |
| Paisley | 13:13:46 | -24.6 | Dark | Up | 30.0 | 280.3 | Up | 12:58:46 - 13:28:46 | 2579 |
| Lakeview | 13:13:45 | -24.4 | Dark | Up | 29.8 | 280.7 | Low | 12:58:45 - 13:28:45 | 2548 |
| Chiloquin | 13:13:47 | -25.6 | Dark | Up | 31.0 | 279.6 | Up | 12:58:47 - 13:28:47 | 2519 |
| Cedarville | 13:13:42 | -24.2 | Dark | Up | 29.6 | 281.2 | Low | 12:58:42 - 13:28:42 | 2505 |
| Klamath Falls | 13:13:46 | -25.5 | Dark | Up | 30.9 | 279.8 | Up | 12:58:46 - 13:28:46 | 2496 |
| Tulelake | 13:13:45 | -25.2 | Dark | Up | 30.6 | 280.1 | Up | 12:58:45 - 13:28:45 | 2487 |
| Fall River/Burney | 13:13:42 | -25.0 | Dark | Up | 30.4 | 280.7 | Up | 12:58:42 - 13:28:42 | 2421 |
| Susanville | 13:13:39 | -24.3 | Dark | Up | 29.7 | 281.5 | Low | 12:58:39 - 13:28:39 | 2401 |
| Gimple | 13:13:38 | -24.5 | Dark | Up | 29.8 | 281.5 | Low | 12:58:38 - 13:28:38 | 2371 |
| Greenville | 13:13:39 | -24.5 | Dark | Up | 29.9 | 281.5 | Low | 12:58:39 - 13:28:39 | 2368 |
| Reno | 13:13:35 | -23.6 | Dark | Up | 28.9 | 282.4 | Low | 12:58:35 - 13:28:35 | 2367 |
| Portola | 13:13:37 | -24.1 | Dark | Up | 29.5 | 281.9 | Low | 12:58:37 - 13:28:37 | 2362 |
| Tonopah | 13:13:29 | -21.3 | Dark | Up | 26.6 | 284.6 | Low | 12:58:29 - 13:28:29 | 2356 |
| Quincy | 13:13:38 | -24.5 | Dark | Up | 29.8 | 281.6 | Low | 12:58:38 - 13:28:38 | 2353 |
| Yerington | 13:13:34 | -23.0 | Dark | Up | 28.3 | 283.1 | Low | 12:58:34 - 13:28:34 | 2350 |
| Carson City | 13:13:34 | -23.5 | Dark | Up | 28.8 | 282.6 | Low | 12:58:34 - 13:28:34 | 2340 |
| Hawthorne | 13:13:31 | -22.5 | Dark | Up | 27.8 | 283.6 | Low | 12:58:31 - 13:28:31 | 2335 |
| Gardnerville | 13:13:33 | -23.4 | Dark | Up | 28.7 | 282.8 | Low | 12:58:33 - 13:28:33 | 2323 |
| Indian Springs | 13:13:23 | -19.8 | Dark | Up | 25.1 | 286.0 | Low | 12:58:23 - 13:28:23 | 2303 |
| DCO | 13:13:17 | -17.4 | AT | Up | 22.7 | 287.8 | Low | 12:58:17 - 13:28:17 | 2293 |
| Henderson | 13:13:21 | -19.1 | Dark | Up | 24.4 | 286.6 | Low | 12:58:21 - 13:28:21 | 2290 |
| Patrick | 13:13:18 | -18.1 | Dark | Up | 23.3 | 287.4 | Low | 12:58:18 - 13:28:18 | 2288 |
| Beatty | 13:13:25 | -20.7 | Dark | Up | 26.0 | 285.3 | Low | 12:58:25 - 13:28:25 | 2284 |
| Lee Vining | 13:13:30 | -22.7 | Dark | Up | 28.0 | 283.6 | Low | 12:58:30 - 13:28:30 | 2271 |
| Kingman/Dolan Springs | 13:13:18 | -18.1 | Dark | Up | 23.4 | 287.4 | Low | 12:58:18 - 13:28:18 | 2262 |
| Bishop | 13:13:28 | -22.0 | Dark | Up | 27.3 | 284.3 | Low | 12:58:28 - 13:28:28 | 2253 |
| Searchlight/Boulder City | 13:13:19 | -18.9 | Dark | Up | 24.2 | 286.9 | Low | 12:58:19 - 13:28:19 | 2247 |
| Laughlin/Bullhead City | 13:13:18 | -18.5 | Dark | Up | 23.8 | 287.1 | Low | 12:58:18 - 13:28:18 | 2238 |
| Mohave Valley | 13:13:17 | -18.5 | Dark | Up | 23.7 | 287.3 | Low | 12:58:17 - 13:28:17 | 2217 |
| Lone Pine | 13:13:25 | -21.6 | Dark | Up | 26.9 | 284.8 | Low | 12:58:25 - 13:28:25 | 2207 |
| Lake Havasu City | 13:13:16 | -18.2 | Dark | Up | 23.4 | 287.5 | Low | 12:58:16 - 13:28:16 | 2195 |
| Parker | 13:13:15 | -18.1 | Dark | Up | 23.3 | 287.7 | Low | 12:58:15 - 13:28:15 | 2169 |
| Blythe | 13:13:14 | -18.2 | Dark | Up | 23.4 | 287.8 | Low | 12:58:14 - 13:28:14 | 2113 |
| Yuma | 13:13:11 | -17.9 | AT | Up | 23.1 | 288.1 | Low | 12:58:11 - 13:28:11 | 2037 |
| Calipatria | 13:13:13 | -18.8 | Dark | Up | 24.0 | 287.6 | Low | 12:58:13 - 13:28:13 | 2033 |
| Idyllwild | 13:13:16 | -19.9 | Dark | Up | 25.1 | 286.8 | Low | 12:58:16 - 13:28:16 | 2032 |
| CPSLO | 13:13:23 | -23.4 | Dark | Up | 28.6 | 284.2 | Low | 12:58:23 - 13:28:23 | 1993 |
| Wildwood | 13:13:18 | -21.5 | Dark | Up | 26.7 | 285.8 | Low | 12:58:18 - 13:28:18 | 1981 |
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, (2019/01/01 13:17UT) Object RA Dec mag sep mel Pollux 07:45:18.0 +28:01:33 1.1 9.25 115 39 Gem 06:58:47.1 +26:04:53 6.5 1.42 126 PPM 096908 07:01:36.0 +26:34:24 8.4 0.62 125 PPM 096961 07:03:36.8 +27:00:20 9.1 0.09 125 450265 07:03:51.0 +26:56:09 16.4 125 Positions are for J2000
Event circumstances last updated at 2018/12/04 05:05:05 UT
Marc W. Buie, Southwest Research Institute