Event between 11WG157 and star UC4-653-016201 with event index number of 314910
Geocentric closest approach at 2019/08/13 10:11:24 UTC
J2000 position of star is 03:34:23.6 +40:26:06
Equinox of date position of star is 03:35:39.7 +40:29:52
Stellar brightness R=16.3,
use SENSEUP=128
Star is 122 degrees from the moon.
Moon is 96% illuminated.
TNO apparent brightness V=22.4
[RECON map]
TNO is 30.7 AU from the Sun
and 30.9 AU from the Earth.
The TNO is moving 15.2
km/sec on the sky relative to the star, or,
2.4 arcsec/hr.
The 1-sigma error in the time of the event is 103 seconds.
The 1-sigma cross-track error in the shadow position is
1997 km.
The sky-plane scale is
22398.0 km/arcsec.
The TNO has an absolute magnitude Hv=7.3
Diameter=210.9 km assuming a 5% albedo -- 13.9 sec chord
Diameter=86.1 km assuming a 30% albedo -- 5.7 sec chord
Dynamical classification is 1:1
Star training set for 11WG157, (2019/08/13 10:11UT) Object RA Dec mag sep mel Aldebaran 04:37:02.9 +16:32:50 0.8 27.39 132 Algol 03:09:27.2 +41:01:47 2.1 5.00 117 PPM 068571 03:34:53.0 +39:57:52 5.8 0.56 122 PPM 046376 03:38:41.0 +40:36:05 8.5 0.58 122 PPM 046352 03:36:44.7 +40:25:32 9.2 0.21 122 PPM 046326 03:35:17.9 +40:35:35 11.3 0.12 122 11WG157 03:35:42.0 +40:29:59 16.3 122 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 4.1 km
RECON observability=1.0 and success probability=8.4%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| CPSLO | 10:10:04 | -32.2 | Dark | Up | 43.1 | 64.8 | Up | 10:00:59 - 10:19:08 | 3591 |
| Klamath Falls | 10:10:53 | -26.9 | Dark | Up | 45.1 | 70.7 | Up | 10:01:49 - 10:19:58 | 3582 |
| Chiloquin | 10:10:55 | -26.6 | Dark | Up | 45.2 | 71.0 | Up | 10:01:51 - 10:20:00 | 3581 |
| Fall River/Burney | 10:10:44 | -27.7 | Dark | Up | 44.9 | 69.8 | Up | 10:01:40 - 10:19:49 | 3577 |
| Tulelake | 10:10:51 | -27.0 | Dark | Up | 45.2 | 70.6 | Up | 10:01:47 - 10:19:56 | 3569 |
| Quincy | 10:10:36 | -28.5 | Dark | Up | 44.8 | 68.9 | Up | 10:01:32 - 10:19:41 | 3565 |
| Greenville | 10:10:38 | -28.3 | Dark | Up | 44.9 | 69.1 | Up | 10:01:33 - 10:19:42 | 3563 |
| Gimple | 10:10:37 | -28.3 | Dark | Up | 45.0 | 69.1 | Up | 10:01:33 - 10:19:42 | 3558 |
| Susanville | 10:10:39 | -27.9 | Dark | Up | 45.2 | 69.4 | Up | 10:01:34 - 10:19:43 | 3542 |
| La Pine/Gilchrist | 10:11:03 | -25.5 | Dark | Up | 45.8 | 72.3 | Up | 10:01:58 - 10:20:07 | 3542 |
| Portola | 10:10:35 | -28.4 | Dark | Up | 45.1 | 68.9 | Up | 10:01:30 - 10:19:39 | 3538 |
| Oregon Observatory | 10:11:04 | -25.3 | Dark | Up | 45.9 | 72.5 | Up | 10:02:00 - 10:20:09 | 3534 |
| Sisters | 10:11:08 | -25.0 | Dark | Up | 45.9 | 72.8 | Up | 10:02:03 - 10:20:12 | 3534 |
| Bend | 10:11:05 | -25.1 | Dark | Up | 46.0 | 72.7 | Up | 10:02:00 - 10:20:09 | 3524 |
| North Lake | 10:11:00 | -25.6 | Dark | Up | 46.1 | 72.1 | Up | 10:01:55 - 10:20:04 | 3515 |
| Redmond | 10:11:07 | -24.9 | Dark | Up | 46.2 | 73.0 | Up | 10:02:02 - 10:20:11 | 3512 |
| Carson City | 10:10:29 | -28.6 | Dark | Up | 45.4 | 68.6 | Up | 10:01:25 - 10:19:34 | 3504 |
| Gardnerville | 10:10:27 | -28.8 | Dark | Up | 45.3 | 68.4 | Up | 10:01:23 - 10:19:32 | 3504 |
| Paisley | 10:10:55 | -26.0 | Dark | Up | 46.1 | 71.7 | Up | 10:01:51 - 10:20:00 | 3503 |
| Madras/Culver | 10:11:09 | -24.5 | Dark | Up | 46.3 | 73.4 | Up | 10:02:05 - 10:20:14 | 3503 |
| Reno | 10:10:32 | -28.3 | Dark | Up | 45.5 | 68.9 | Up | 10:01:27 - 10:19:36 | 3502 |
| Lakeview | 10:10:51 | -26.3 | Dark | Up | 46.1 | 71.3 | Up | 10:01:47 - 10:19:56 | 3499 |
| Cedarville | 10:10:46 | -26.8 | Dark | Up | 46.0 | 70.7 | Up | 10:01:41 - 10:19:50 | 3498 |
| Maupin | 10:11:13 | -24.1 | Dark | Up | 46.5 | 74.0 | Up | 10:02:08 - 10:20:17 | 3490 |
| The Dalles | 10:11:16 | -23.7 | Dark | Up | 46.6 | 74.4 | Up | 10:02:12 - 10:20:21 | 3488 |
| Lee Vining | 10:10:20 | -29.3 | Dark | Up | 45.4 | 67.6 | Up | 10:01:16 - 10:19:25 | 3473 |
| Yerington | 10:10:28 | -28.5 | Dark | Up | 45.8 | 68.6 | Up | 10:01:24 - 10:19:33 | 3467 |
| Goldendale | 10:11:16 | -23.4 | Dark | Up | 46.9 | 74.8 | Up | 10:02:12 - 10:20:21 | 3463 |
| Wildwood | 10:09:52 | -32.2 | Dark | Up | 44.1 | 64.2 | Up | 10:00:48 - 10:18:57 | 3461 |
| Hawthorne | 10:10:23 | -28.6 | Dark | Up | 46.0 | 68.3 | Up | 10:01:19 - 10:19:28 | 3438 |
| Yakima | 10:11:22 | -22.7 | Dark | Up | 47.3 | 75.7 | Up | 10:02:18 - 10:20:27 | 3433 |
| Bishop | 10:10:15 | -29.4 | Dark | Up | 45.7 | 67.3 | Up | 10:01:10 - 10:19:19 | 3432 |
| Toppenish/White Swan | 10:11:20 | -22.8 | Dark | Up | 47.3 | 75.6 | Up | 10:02:16 - 10:20:25 | 3429 |
| Ellensburg | 10:11:25 | -22.3 | Dark | Up | 47.4 | 76.2 | Up | 10:02:21 - 10:20:30 | 3424 |
| Lone Pine | 10:10:09 | -29.9 | Dark | Up | 45.6 | 66.7 | Up | 10:01:05 - 10:19:14 | 3415 |
| Wenatchee | 10:11:28 | -21.9 | Dark | Up | 47.6 | 76.7 | Up | 10:02:23 - 10:20:32 | 3403 |
| Entiat | 10:11:29 | -21.6 | Dark | Up | 47.8 | 77.1 | Up | 10:02:24 - 10:20:33 | 3392 |
| Manson/Chelan | 10:11:31 | -21.4 | Dark | Up | 47.9 | 77.4 | Up | 10:02:27 - 10:20:36 | 3384 |
| George/Umatilla | 10:11:16 | -22.8 | Dark | Up | 47.9 | 75.7 | Up | 10:02:11 - 10:20:20 | 3379 |
| Pasco | 10:11:17 | -22.4 | Dark | Up | 48.1 | 76.1 | Up | 10:02:13 - 10:20:22 | 3361 |
| Brewster | 10:11:32 | -21.1 | Dark | Up | 48.2 | 77.8 | Up | 10:02:27 - 10:20:36 | 3360 |
| PNWRO | 10:11:16 | -22.5 | Dark | Up | 48.2 | 76.0 | Up | 10:02:12 - 10:20:21 | 3352 |
| Tonopah | 10:10:18 | -28.3 | Dark | Up | 46.8 | 68.3 | Up | 10:01:14 - 10:19:23 | 3350 |
| Okanogan | 10:11:33 | -20.8 | Dark | Up | 48.4 | 78.2 | Up | 10:02:29 - 10:20:38 | 3343 |
| Idyllwild | 10:09:48 | -31.5 | Dark | Up | 45.3 | 64.3 | Up | 10:00:43 - 10:18:52 | 3334 |
| Tonasket | 10:11:35 | -20.5 | Dark | Up | 48.5 | 78.7 | Up | 10:02:31 - 10:20:40 | 3327 |
| Beatty | 10:10:10 | -29.0 | Dark | Up | 46.7 | 67.3 | Up | 10:01:05 - 10:19:14 | 3327 |
| Oliver | 10:11:39 | -20.1 | Dark | Up | 48.5 | 79.2 | Up | 10:02:35 - 10:20:44 | 3323 |
| Oroville | 10:11:37 | -20.3 | Dark | Up | 48.6 | 79.0 | Up | 10:02:33 - 10:20:42 | 3323 |
| Okanagan Falls | 10:11:40 | -20.0 | Dark | Up | 48.6 | 79.3 | Up | 10:02:36 - 10:20:45 | 3321 |
| Summerland | 10:11:44 | -19.6 | Dark | Up | 48.6 | 79.8 | Up | 10:02:39 - 10:20:48 | 3317 |
| Anarchist Mountain Observatory | 10:11:38 | -20.2 | Dark | Up | 48.6 | 79.1 | Up | 10:02:33 - 10:20:42 | 3317 |
| Penticton | 10:11:41 | -19.8 | Dark | Up | 48.6 | 79.6 | Up | 10:02:37 - 10:20:46 | 3315 |
| Kelowna | 10:11:44 | -19.4 | Dark | Up | 48.8 | 80.1 | Up | 10:02:40 - 10:20:49 | 3298 |
| Indian Springs | 10:10:06 | -28.7 | Dark | Up | 47.3 | 67.3 | Up | 10:01:02 - 10:19:11 | 3257 |
| Calipatria | 10:09:42 | -31.3 | Dark | Up | 46.0 | 63.9 | Up | 10:00:38 - 10:18:47 | 3251 |
| Henderson | 10:10:02 | -28.8 | Dark | Up | 47.6 | 66.9 | Up | 10:00:58 - 10:19:07 | 3211 |
| Searchlight/Boulder City | 10:09:57 | -29.2 | Dark | Up | 47.4 | 66.3 | Up | 10:00:53 - 10:19:02 | 3208 |
| Yuma | 10:09:38 | -31.1 | Dark | Up | 46.4 | 63.7 | Up | 10:00:34 - 10:18:43 | 3187 |
| Blythe | 10:09:44 | -30.4 | Dark | Up | 46.9 | 64.6 | Up | 10:00:40 - 10:18:49 | 3186 |
| Laughlin/Bullhead City | 10:09:55 | -29.2 | Dark | Up | 47.6 | 66.1 | Up | 10:00:51 - 10:19:00 | 3184 |
| Mohave Valley | 10:09:53 | -29.4 | Dark | Up | 47.5 | 65.8 | Up | 10:00:48 - 10:18:57 | 3184 |
| Lake Havasu City | 10:09:51 | -29.6 | Dark | Up | 47.5 | 65.5 | Up | 10:00:46 - 10:18:55 | 3167 |
| Parker | 10:09:48 | -29.8 | Dark | Up | 47.3 | 65.1 | Up | 10:00:43 - 10:18:52 | 3165 |
| Kingman/Dolan Springs | 10:09:55 | -28.9 | Dark | Up | 48.0 | 66.2 | Up | 10:00:50 - 10:18:59 | 3148 |
| Patrick | 10:09:56 | -28.6 | Dark | Up | 48.2 | 66.5 | Up | 10:00:52 - 10:19:01 | 3134 |
| DCO | 10:09:54 | -28.5 | Dark | Up | 48.6 | 66.3 | Up | 10:00:49 - 10:18:58 | 3085 |
| Niwot | 10:10:23 | -20.4 | Dark | Up | 56.3 | 74.6 | Up | 10:01:19 - 10:19:28 | 2519 |
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 11WG157, (2019/08/13 10:11UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 27.39 132 Algol 03:08:10.1 +40:57:20 2.1 5.00 117 PPM 068571 03:33:35.0 +39:53:58 5.8 0.56 122 PPM 046376 03:37:22.4 +40:32:17 8.5 0.58 122 PPM 046352 03:35:26.3 +40:21:41 9.2 0.21 122 PPM 046326 03:33:59.5 +40:31:42 11.3 0.12 122 11WG157 03:34:23.6 +40:26:06 16.3 122 Positions are for J2000
Event circumstances last updated at 2019/01/17 21:53:22 UT
Marc W. Buie, Southwest Research Institute