Event between 11WJ157 and star GA1240:02891022 with event index number of 314769
Geocentric closest approach at 2018/12/19 02:24:03 UTC
J2000 position of star is 06:48:50.5 +34:47:03
Equinox of date position of star is 06:50:05.4 +34:45:42
Stellar brightness G=13.9,
use SENSEUP=64
Star is 63 degrees from the moon.
Moon is 83% illuminated.
TNO apparent brightness V=21.2
[RECON map]
TNO is 39.9 AU from the Sun
and 38.9 AU from the Earth.
The TNO is moving 24.5
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 270 seconds.
The 1-sigma cross-track error in the shadow position is
3114 km.
The sky-plane scale is
28229.1 km/arcsec.
The TNO has an absolute magnitude Hv=5.2
Diameter=557.2 km assuming a 5% albedo -- 22.8 sec chord
Diameter=227.5 km assuming a 30% albedo -- 9.3 sec chord
Dynamical classification is 6:1EEEEE
Star training set for 11WJ157, (2018/12/19 02:24UT) Object RA Dec mag sep mel Pollux 07:46:28.4 +27:58:44 1.1 13.79 75 34The Gem 06:54:02.3 +33:56:12 3.6 1.16 64 PPM 072140 06:51:28.1 +35:02:42 8.1 0.40 63 PPM 072103 06:49:43.1 +34:37:26 9.9 0.16 63 11WJ157 06:50:06.0 +34:45:41 13.9 63 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
3.3 sigma about the mid-time.
The median site spacing is 14.4 km
RECON observability=0.2 and success probability=5.4%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Summerland | 02:27:29 | -22.6 | Dark | Up | 21.6 | 61.1 | Low | 02:12:29 - 02:42:29 | 6567 |
| Kelowna | 02:27:30 | -22.9 | Dark | Up | 21.8 | 61.4 | Low | 02:12:30 - 02:42:30 | 6555 |
| Penticton | 02:27:31 | -22.7 | Dark | Up | 21.5 | 61.1 | Low | 02:12:31 - 02:42:31 | 6536 |
| Okanagan Falls | 02:27:30 | -22.7 | Dark | Up | 21.4 | 61.1 | Low | 02:12:30 - 02:42:30 | 6523 |
| Oliver | 02:27:32 | -22.7 | Dark | Up | 21.4 | 61.0 | Low | 02:12:32 - 02:42:32 | 6511 |
| Anarchist Mountain Observatory | 02:27:32 | -22.8 | Dark | Up | 21.4 | 61.1 | Low | 02:12:32 - 02:42:32 | 6490 |
| Oroville | 02:27:32 | -22.7 | Dark | Up | 21.3 | 61.0 | Low | 02:12:32 - 02:42:32 | 6488 |
| Tonasket | 02:27:33 | -22.7 | Dark | Up | 21.2 | 60.9 | Low | 02:12:33 - 02:42:33 | 6470 |
| Okanogan | 02:27:33 | -22.5 | Dark | Up | 20.9 | 60.7 | Low | 02:12:33 - 02:42:33 | 6452 |
| Manson/Chelan | 02:27:35 | -22.0 | Dark | Up | 20.4 | 60.2 | Low | 02:12:35 - 02:42:35 | 6442 |
| Brewster | 02:27:34 | -22.3 | Dark | Up | 20.7 | 60.5 | Low | 02:12:34 - 02:42:34 | 6441 |
| Entiat | 02:27:36 | -22.0 | Dark | Up | 20.2 | 60.1 | Low | 02:12:36 - 02:42:36 | 6429 |
| Wenatchee | 02:27:36 | -21.8 | Dark | Up | 20.0 | 60.0 | Low | 02:12:36 - 02:42:36 | 6414 |
| Ellensburg | 02:27:38 | -21.6 | Dark | Up | 19.7 | 59.7 | Really Low | 02:12:38 - 02:42:38 | 6394 |
| Yakima | 02:27:39 | -21.5 | Dark | Up | 19.5 | 59.6 | Really Low | 02:12:39 - 02:42:39 | 6364 |
| Toppenish/White Swan | 02:27:39 | -21.6 | Dark | Up | 19.5 | 59.6 | Really Low | 02:12:39 - 02:42:39 | 6341 |
| Goldendale | 02:27:41 | -21.2 | Dark | Up | 19.0 | 59.2 | Really Low | 02:12:41 - 02:42:41 | 6319 |
| The Dalles | 02:27:41 | -20.9 | Dark | Up | 18.6 | 58.9 | Really Low | 02:12:41 - 02:42:41 | 6319 |
| Maupin | 02:27:41 | -20.9 | Dark | Up | 18.5 | 58.9 | Really Low | 02:12:41 - 02:42:41 | 6282 |
| Pasco | 02:27:39 | -22.4 | Dark | Up | 20.2 | 60.3 | Low | 02:12:39 - 02:42:39 | 6275 |
| George/Umatilla | 02:27:40 | -22.2 | Dark | Up | 19.9 | 60.1 | Really Low | 02:12:40 - 02:42:40 | 6259 |
| PNWRO | 02:27:41 | -22.5 | Dark | Up | 20.2 | 60.4 | Low | 02:12:41 - 02:42:41 | 6245 |
| Madras/Culver | 02:27:44 | -20.7 | Dark | Up | 18.2 | 58.7 | Really Low | 02:12:44 - 02:42:44 | 6243 |
| Sisters | 02:27:44 | -20.3 | Dark | Up | 17.7 | 58.3 | Really Low | 02:12:44 - 02:42:44 | 6239 |
| Redmond | 02:27:44 | -20.6 | Dark | Up | 18.0 | 58.6 | Really Low | 02:12:44 - 02:42:44 | 6218 |
| Bend | 02:27:45 | -20.5 | Dark | Up | 17.8 | 58.4 | Really Low | 02:12:45 - 02:42:45 | 6209 |
| Oregon Observatory | 02:27:45 | -20.3 | Dark | Up | 17.6 | 58.3 | Really Low | 02:12:45 - 02:42:45 | 6202 |
| La Pine/Gilchrist | 02:27:46 | -20.3 | Dark | Up | 17.4 | 58.2 | Really Low | 02:12:46 - 02:42:46 | 6189 |
| North Lake | 02:27:47 | -20.6 | Dark | Up | 17.6 | 58.4 | Really Low | 02:12:47 - 02:42:47 | 6127 |
| Chiloquin | 02:27:48 | -19.7 | Dark | Up | 16.6 | 57.7 | Really Low | 02:12:48 - 02:42:48 | 6121 |
| Klamath Falls | 02:27:48 | -19.7 | Dark | Up | 16.5 | 57.7 | Really Low | 02:12:48 - 02:42:48 | 6091 |
| Paisley | 02:27:48 | -20.7 | Dark | Up | 17.5 | 58.5 | Really Low | 02:12:48 - 02:42:48 | 6068 |
| Tulelake | 02:27:50 | -19.9 | Dark | Up | 16.6 | 57.8 | Really Low | 02:12:50 - 02:42:50 | 6056 |
| Lakeview | 02:27:49 | -20.7 | Dark | Up | 17.4 | 58.5 | Really Low | 02:12:49 - 02:42:49 | 6019 |
| Fall River/Burney | 02:27:52 | -19.7 | Dark | Up | 16.1 | 57.6 | Really Low | 02:12:52 - 02:42:52 | 5981 |
| Cedarville | 02:27:50 | -20.7 | Dark | Up | 17.2 | 58.4 | Really Low | 02:12:50 - 02:42:50 | 5959 |
| Susanville | 02:27:53 | -20.1 | Dark | Up | 16.3 | 57.9 | Really Low | 02:12:53 - 02:42:53 | 5895 |
| Greenville | 02:27:53 | -19.8 | Dark | Up | 15.9 | 57.6 | Really Low | 02:12:53 - 02:42:53 | 5887 |
| Gimple | 02:27:54 | -19.9 | Dark | Up | 16.0 | 57.7 | Really Low | 02:12:54 - 02:42:54 | 5883 |
| Quincy | 02:27:54 | -19.8 | Dark | Up | 15.8 | 57.6 | Really Low | 02:12:54 - 02:42:54 | 5871 |
| Portola | 02:27:55 | -20.1 | Dark | Up | 16.1 | 57.8 | Really Low | 02:12:55 - 02:42:55 | 5837 |
| Reno | 02:27:55 | -20.5 | Dark | Up | 16.4 | 58.1 | Really Low | 02:12:55 - 02:42:55 | 5784 |
| Carson City | 02:27:55 | -20.5 | Dark | Up | 16.2 | 58.0 | Really Low | 02:12:55 - 02:42:55 | 5754 |
| Gardnerville | 02:27:57 | -20.4 | Dark | Up | 16.1 | 58.0 | Really Low | 02:12:57 - 02:42:57 | 5731 |
| Yerington | 02:27:56 | -20.9 | Dark | Up | 16.5 | 58.3 | Really Low | 02:12:56 - 02:42:56 | 5706 |
| Hawthorne | 02:27:57 | -21.2 | Dark | Up | 16.6 | 58.4 | Really Low | 02:12:57 - 02:42:57 | 5641 |
| Lee Vining | 02:27:59 | -20.7 | Dark | Up | 16.0 | 58.1 | Really Low | 02:12:59 - 02:42:59 | 5620 |
| Bishop | 02:27:59 | -21.1 | Dark | Up | 16.2 | 58.3 | Really Low | 02:12:59 - 02:42:59 | 5534 |
| Tonopah | 02:27:58 | -22.2 | Dark | Up | 17.3 | 59.0 | Really Low | 02:12:58 - 02:42:58 | 5531 |
| CPSLO | 02:28:03 | -18.8 | Dark | Up | 13.5 | 56.7 | Really Low | 02:13:03 - 02:43:03 | 5481 |
| Lone Pine | 02:28:01 | -21.2 | Dark | Up | 16.0 | 58.2 | Really Low | 02:13:01 - 02:43:01 | 5453 |
| Beatty | 02:28:00 | -22.3 | Dark | Up | 17.0 | 58.9 | Really Low | 02:13:00 - 02:43:00 | 5412 |
| Indian Springs | 02:28:01 | -23.0 | Dark | Up | 17.6 | 59.4 | Really Low | 02:13:01 - 02:43:01 | 5329 |
| Wildwood | 02:28:06 | -20.1 | Dark | Up | 14.3 | 57.4 | Really Low | 02:13:06 - 02:43:06 | 5270 |
| Henderson | 02:28:01 | -23.5 | Dark | Up | 17.8 | 59.5 | Really Low | 02:13:01 - 02:43:01 | 5248 |
| Searchlight/Boulder City | 02:28:02 | -23.4 | Dark | Up | 17.6 | 59.4 | Really Low | 02:13:02 - 02:43:02 | 5195 |
| Laughlin/Bullhead City | 02:28:03 | -23.6 | Dark | Up | 17.7 | 59.5 | Really Low | 02:13:03 - 02:43:03 | 5152 |
| Idyllwild | 02:28:06 | -21.6 | Dark | Up | 15.4 | 58.2 | Really Low | 02:13:06 - 02:43:06 | 5139 |
| Niwot | 02:27:47 | -31.7 | Dark | Up | 26.5 | 65.6 | Low | 02:12:47 - 02:42:47 | 5139 |
| Patrick | 02:28:03 | -24.2 | Dark | Up | 18.3 | 59.9 | Really Low | 02:13:03 - 02:43:03 | 5137 |
| Mohave Valley | 02:28:03 | -23.5 | Dark | Up | 17.5 | 59.4 | Really Low | 02:13:03 - 02:43:03 | 5128 |
| Kingman/Dolan Springs | 02:28:02 | -24.0 | Dark | Up | 18.1 | 59.7 | Really Low | 02:13:02 - 02:43:02 | 5127 |
| Lake Havasu City | 02:28:04 | -23.7 | Dark | Up | 17.5 | 59.4 | Really Low | 02:13:04 - 02:43:04 | 5080 |
| DCO | 02:28:03 | -24.7 | Dark | Up | 18.7 | 60.1 | Really Low | 02:13:03 - 02:43:03 | 5074 |
| Parker | 02:28:04 | -23.6 | Dark | Up | 17.4 | 59.3 | Really Low | 02:13:04 - 02:43:04 | 5048 |
| Calipatria | 02:28:06 | -22.4 | Dark | Up | 16.0 | 58.5 | Really Low | 02:13:06 - 02:43:06 | 5024 |
| Blythe | 02:28:05 | -23.2 | Dark | Up | 16.9 | 59.1 | Really Low | 02:13:05 - 02:43:05 | 5018 |
| Yuma | 02:28:06 | -23.0 | Dark | Up | 16.4 | 58.8 | Really Low | 02:13:06 - 02:43:06 | 4939 |
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 11WJ157, (2018/12/19 02:24UT) Object RA Dec mag sep mel Pollux 07:45:18.1 +28:01:33 1.1 13.79 75 34The Gem 06:52:47.3 +33:57:40 3.6 1.16 64 PPM 072140 06:50:12.4 +35:04:06 8.1 0.40 63 PPM 072103 06:48:27.7 +34:38:47 9.9 0.16 63 11WJ157 06:48:50.5 +34:47:03 13.9 63 Positions are for J2000
Event circumstances last updated at 2018/10/23 20:46:02 UT
Marc W. Buie, Southwest Research Institute