Event between (119979) 02WC19 and star GA1080:01412846 with event index number of 170219
Geocentric closest approach at 2018/12/30 11:52:56 UTC
J2000 position of star is 05:50:53.9 +19:55:53
Equinox of date position of star is 05:52:00.8 +19:56:07
Stellar brightness G=16.5,
use SENSEUP=128
Star is 115 degrees from the moon.
Moon is 38% illuminated.
TNO apparent brightness V=20.7
[RECON map]
TNO is 40.3 AU from the Sun
and 39.4 AU from the Earth.
The TNO is moving 24.9
km/sec on the sky relative to the star, or,
3.1 arcsec/hr.
The 1-sigma error in the time of the event is 238 seconds.
The 1-sigma cross-track error in the shadow position is
1824 km.
The sky-plane scale is
28553.1 km/arcsec.
The TNO has an absolute magnitude Hv=4.7
Diameter=691.9 km assuming a 5% albedo -- 27.8 sec chord
Diameter=282.4 km assuming a 30% albedo -- 11.3 sec chord
Dynamical classification is 2:1E
Star training set for 119979, (2018/12/30 11:53UT) Object RA Dec mag sep mel Betelgeuse 05:56:12.0 +07:24:33 0.4 12.57 114 Alnath 05:27:29.7 +28:37:18 1.6 10.32 119 PPM 121513 05:53:31.0 +19:52:16 6.4 0.36 114 PPM 121478 05:52:10.0 +19:52:25 8.7 0.07 115 119979 05:52:01.5 +19:56:07 16.5 115 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
3.8 sigma about the mid-time.
The median site spacing is 18.8 km
RECON observability=1.0 and success probability=20.1%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kelowna | 11:50:26 | -38.2 | Dark | Up | 28.3 | 267.8 | Low | 11:35:26 - 12:05:26 | 993 |
| Summerland | 11:50:26 | -38.4 | Dark | Up | 28.5 | 267.5 | Low | 11:35:26 - 12:05:26 | 981 |
| Penticton | 11:50:25 | -38.3 | Dark | Up | 28.4 | 267.9 | Low | 11:35:25 - 12:05:25 | 961 |
| Okanagan Falls | 11:50:25 | -38.4 | Dark | Up | 28.4 | 267.9 | Low | 11:35:25 - 12:05:25 | 946 |
| Oliver | 11:50:24 | -38.4 | Dark | Up | 28.4 | 268.1 | Low | 11:35:24 - 12:05:24 | 934 |
| Anarchist Mountain Observatory | 11:50:23 | -38.3 | Dark | Up | 28.3 | 268.3 | Low | 11:35:23 - 12:05:23 | 926 |
| Oroville | 11:50:23 | -38.4 | Dark | Up | 28.4 | 268.3 | Low | 11:35:23 - 12:05:23 | 918 |
| Tonasket | 11:50:23 | -38.4 | Dark | Up | 28.4 | 268.4 | Low | 11:35:23 - 12:05:23 | 900 |
| Okanogan | 11:50:22 | -38.5 | Dark | Up | 28.5 | 268.5 | Low | 11:35:22 - 12:05:22 | 871 |
| Brewster | 11:50:21 | -38.7 | Dark | Up | 28.6 | 268.5 | Low | 11:35:21 - 12:05:21 | 845 |
| Manson/Chelan | 11:50:21 | -39.0 | Dark | Up | 28.9 | 268.3 | Low | 11:35:21 - 12:05:21 | 819 |
| Entiat | 11:50:20 | -39.1 | Dark | Up | 28.9 | 268.4 | Low | 11:35:20 - 12:05:20 | 800 |
| Wenatchee | 11:50:19 | -39.2 | Dark | Up | 29.0 | 268.4 | Low | 11:35:19 - 12:05:19 | 778 |
| Ellensburg | 11:50:18 | -39.4 | Dark | Up | 29.2 | 268.5 | Low | 11:35:18 - 12:05:18 | 739 |
| Pasco | 11:50:14 | -38.5 | Dark | Up | 28.2 | 269.9 | Low | 11:35:14 - 12:05:14 | 716 |
| Yakima | 11:50:17 | -39.4 | Dark | Up | 29.2 | 268.7 | Low | 11:35:17 - 12:05:17 | 706 |
| PNWRO | 11:50:13 | -38.4 | Dark | Up | 28.1 | 270.2 | Low | 11:35:13 - 12:05:13 | 701 |
| Toppenish/White Swan | 11:50:16 | -39.4 | Dark | Up | 29.1 | 268.9 | Low | 11:35:16 - 12:05:16 | 693 |
| George/Umatilla | 11:50:14 | -38.7 | Dark | Up | 28.4 | 269.9 | Low | 11:35:14 - 12:05:14 | 683 |
| Goldendale | 11:50:15 | -39.7 | Dark | Up | 29.4 | 268.9 | Low | 11:35:15 - 12:05:15 | 638 |
| The Dalles | 11:50:15 | -40.0 | Dark | Up | 29.7 | 268.8 | Low | 11:35:15 - 12:05:15 | 610 |
| Niwot | 11:49:46 | -28.3 | Dark | Up | 17.6 | 281.6 | Really Low | 11:34:46 - 12:04:46 | 602 |
| Maupin | 11:50:13 | -40.0 | Dark | Up | 29.6 | 269.1 | Low | 11:35:13 - 12:05:13 | 579 |
| Madras/Culver | 11:50:12 | -40.1 | Dark | Up | 29.7 | 269.4 | Low | 11:35:12 - 12:05:12 | 532 |
| Redmond | 11:50:11 | -40.2 | Dark | Up | 29.7 | 269.5 | Low | 11:35:11 - 12:05:11 | 501 |
| Sisters | 11:50:11 | -40.4 | Dark | Up | 30.0 | 269.3 | Low | 11:35:11 - 12:05:11 | 493 |
| Bend | 11:50:10 | -40.3 | Dark | Up | 29.8 | 269.6 | Low | 11:35:10 - 12:05:10 | 480 |
| Oregon Observatory | 11:50:10 | -40.4 | Dark | Up | 29.9 | 269.6 | Low | 11:35:10 - 12:05:10 | 462 |
| La Pine/Gilchrist | 11:50:09 | -40.5 | Dark | Up | 29.9 | 269.7 | Low | 11:35:09 - 12:05:09 | 443 |
| North Lake | 11:50:08 | -40.1 | Dark | Up | 29.5 | 270.3 | Low | 11:35:08 - 12:05:08 | 422 |
| Paisley | 11:50:05 | -39.9 | Dark | Up | 29.2 | 270.9 | Low | 11:35:05 - 12:05:05 | 385 |
| Lakeview | 11:50:04 | -39.8 | Dark | Up | 29.1 | 271.3 | Low | 11:35:04 - 12:05:04 | 347 |
| Chiloquin | 11:50:07 | -40.8 | Dark | Up | 30.2 | 270.0 | Up | 11:35:07 - 12:05:07 | 340 |
| Klamath Falls | 11:50:05 | -40.8 | Dark | Up | 30.2 | 270.3 | Up | 11:35:05 - 12:05:05 | 312 |
| Tulelake | 11:50:05 | -40.6 | Dark | Up | 29.9 | 270.7 | Low | 11:35:05 - 12:05:05 | 297 |
| Cedarville | 11:50:01 | -39.7 | Dark | Up | 29.0 | 271.7 | Low | 11:35:01 - 12:05:01 | 296 |
| Fall River/Burney | 11:50:02 | -40.6 | Dark | Up | 29.9 | 271.2 | Low | 11:35:02 - 12:05:02 | 221 |
| Susanville | 11:49:59 | -40.1 | Dark | Up | 29.3 | 272.0 | Low | 11:34:59 - 12:04:59 | 187 |
| Gimple | 11:49:59 | -40.3 | Dark | Up | 29.4 | 272.1 | Low | 11:34:59 - 12:04:59 | 157 |
| Greenville | 11:49:59 | -40.3 | Dark | Up | 29.5 | 272.0 | Low | 11:34:59 - 12:04:59 | 154 |
| Portola | 11:49:57 | -40.0 | Dark | Up | 29.1 | 272.5 | Low | 11:34:57 - 12:04:57 | 139 |
| Quincy | 11:49:58 | -40.3 | Dark | Up | 29.5 | 272.1 | Low | 11:34:58 - 12:04:58 | 137 |
| Reno | 11:49:56 | -39.5 | Dark | Up | 28.6 | 273.0 | Low | 11:34:56 - 12:04:56 | 134 |
| Yerington | 11:49:54 | -39.0 | Dark | Up | 28.1 | 273.7 | Low | 11:34:54 - 12:04:54 | 104 |
| Carson City | 11:49:55 | -39.5 | Dark | Up | 28.6 | 273.2 | Low | 11:34:55 - 12:04:55 | 103 |
| Gardnerville | 11:49:54 | -39.5 | Dark | Up | 28.5 | 273.4 | Low | 11:34:54 - 12:04:54 | 83 |
| Hawthorne | 11:49:51 | -38.6 | Dark | Up | 27.6 | 274.3 | Low | 11:34:51 - 12:04:51 | 78 |
| Tonopah | 11:49:49 | -37.5 | Dark | Up | 26.5 | 275.4 | Low | 11:34:49 - 12:04:49 | 77 |
| Lee Vining | 11:49:50 | -39.0 | Dark | Up | 28.0 | 274.3 | Low | 11:34:50 - 12:04:50 | 14 |
| Indian Springs | 11:49:43 | -36.2 | Dark | Up | 25.2 | 276.9 | Low | 11:34:43 - 12:04:43 | -9 |
| Beatty | 11:49:45 | -37.1 | Dark | Up | 26.0 | 276.2 | Low | 11:34:45 - 12:04:45 | -12 |
| Bishop | 11:49:48 | -38.4 | Dark | Up | 27.4 | 275.0 | Low | 11:34:48 - 12:04:48 | -19 |
| Henderson | 11:49:41 | -35.6 | Dark | Up | 24.5 | 277.5 | Low | 11:34:41 - 12:04:41 | -36 |
| Patrick | 11:49:38 | -34.7 | Dark | Up | 23.6 | 278.4 | Low | 11:34:38 - 12:04:38 | -58 |
| DCO | 11:49:37 | -34.1 | Dark | Up | 22.9 | 278.9 | Low | 11:34:37 - 12:04:37 | -64 |
| Lone Pine | 11:49:46 | -38.1 | Dark | Up | 27.1 | 275.6 | Low | 11:34:46 - 12:04:46 | -77 |
| Kingman/Dolan Springs | 11:49:38 | -34.8 | Dark | Up | 23.7 | 278.4 | Low | 11:34:38 - 12:04:38 | -84 |
| Searchlight/Boulder City | 11:49:39 | -35.5 | Dark | Up | 24.4 | 277.8 | Low | 11:34:39 - 12:04:39 | -85 |
| Laughlin/Bullhead City | 11:49:39 | -35.2 | Dark | Up | 24.1 | 278.1 | Low | 11:34:39 - 12:04:39 | -102 |
| Mohave Valley | 11:49:38 | -35.2 | Dark | Up | 24.1 | 278.3 | Low | 11:34:38 - 12:04:38 | -126 |
| Lake Havasu City | 11:49:36 | -35.0 | Dark | Up | 23.8 | 278.6 | Low | 11:34:36 - 12:04:36 | -154 |
| Parker | 11:49:36 | -34.9 | Dark | Up | 23.7 | 278.7 | Low | 11:34:36 - 12:04:36 | -185 |
| Blythe | 11:49:35 | -35.1 | Dark | Up | 23.9 | 278.8 | Low | 11:34:35 - 12:04:35 | -242 |
| CPSLO | 11:49:46 | -40.2 | Dark | Up | 29.0 | 274.9 | Low | 11:34:46 - 12:04:46 | -272 |
| Idyllwild | 11:49:37 | -36.9 | Dark | Up | 25.7 | 277.7 | Low | 11:34:37 - 12:04:37 | -297 |
| Calipatria | 11:49:34 | -35.8 | Dark | Up | 24.6 | 278.6 | Low | 11:34:34 - 12:04:34 | -317 |
| Wildwood | 11:49:40 | -38.4 | Dark | Up | 27.2 | 276.6 | Low | 11:34:40 - 12:04:40 | -322 |
| Yuma | 11:49:32 | -35.0 | Dark | Up | 23.8 | 279.2 | Low | 11:34:32 - 12:04:32 | -328 |
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 119979, (2018/12/30 11:53UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 12.57 114 Alnath 05:26:17.5 +28:36:23 1.6 10.32 119 PPM 121513 05:52:23.4 +19:52:04 6.4 0.36 114 PPM 121478 05:51:02.4 +19:52:11 8.7 0.07 115 119979 05:50:53.9 +19:55:53 16.5 115 Positions are for J2000
Event circumstances last updated at 2018/10/23 20:48:23 UT
Marc W. Buie, Southwest Research Institute