Event between (342842) 08YB3 and star GA1500:05886461 with event index number of 336579
Geocentric closest approach at 2019/01/27 12:07:15 UTC
J2000 position of star is 20:31:40.3 +60:18:26
Equinox of date position of star is 20:32:03.5 +60:22:19
Stellar brightness G=13.7,
use SENSEUP=64
Star is 99 degrees from the moon.
Moon is 54% illuminated.
TNO apparent brightness V=20.6
[RECON map]
TNO is 12.2 AU from the Sun
and 12.4 AU from the Earth.
The TNO is moving 28.2
km/sec on the sky relative to the star, or,
11.3 arcsec/hr.
The 1-sigma error in the time of the event is 21 seconds.
The 1-sigma cross-track error in the shadow position is
1295 km.
The sky-plane scale is
8983.7 km/arcsec.
The TNO has an absolute magnitude Hv=9.3
Diameter=83.2 km assuming a 5% albedo -- 3.0 sec chord
Diameter=34.0 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is CENTAURR
Star training set for 342842, (2019/01/27 12:07UT) Object RA Dec mag sep mel Deneb 20:42:05.0 +45:20:57 1.3 15.10 101 Alderamin 21:19:02.0 +62:40:00 2.4 6.04 105 PPM 022320 20:40:42.0 +60:34:29 6.4 1.08 100 PPM 022236 20:32:27.6 +60:29:14 7.4 0.12 99 342842 20:32:03.7 +60:22:21 13.7 99 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 3.0 km
RECON observability=0.7 and success probability=1.2%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sisters | 12:04:35 | -36.6 | Dark | Up | 24.8 | 27.6 | Low | 12:02:19 - 12:06:51 | 5321 |
| The Dalles | 12:04:36 | -36.1 | Dark | Up | 26.1 | 28.1 | Low | 12:02:20 - 12:06:52 | 5314 |
| Chiloquin | 12:04:30 | -37.1 | Dark | Up | 23.2 | 27.1 | Low | 12:02:14 - 12:06:46 | 5313 |
| La Pine/Gilchrist | 12:04:32 | -36.7 | Dark | Up | 24.3 | 27.5 | Low | 12:02:16 - 12:06:48 | 5307 |
| Oregon Observatory | 12:04:33 | -36.6 | Dark | Up | 24.5 | 27.6 | Low | 12:02:17 - 12:06:49 | 5306 |
| Klamath Falls | 12:04:29 | -37.1 | Dark | Up | 22.9 | 27.1 | Low | 12:02:13 - 12:06:45 | 5302 |
| Maupin | 12:04:35 | -36.1 | Dark | Up | 25.7 | 28.0 | Low | 12:02:19 - 12:06:51 | 5301 |
| Bend | 12:04:32 | -36.5 | Dark | Up | 24.7 | 27.7 | Low | 12:02:16 - 12:06:48 | 5300 |
| Madras/Culver | 12:04:34 | -36.3 | Dark | Up | 25.2 | 27.9 | Low | 12:02:18 - 12:06:50 | 5296 |
| Redmond | 12:04:34 | -36.4 | Dark | Up | 24.9 | 27.8 | Low | 12:02:18 - 12:06:50 | 5294 |
| Goldendale | 12:04:36 | -35.8 | Dark | Up | 26.4 | 28.3 | Low | 12:02:20 - 12:06:52 | 5294 |
| Ellensburg | 12:04:38 | -35.4 | Dark | Up | 27.5 | 28.7 | Low | 12:02:22 - 12:06:54 | 5292 |
| Yakima | 12:04:38 | -35.5 | Dark | Up | 27.2 | 28.6 | Low | 12:02:22 - 12:06:54 | 5288 |
| Wenatchee | 12:04:39 | -35.2 | Dark | Up | 28.0 | 28.9 | Low | 12:02:23 - 12:06:55 | 5284 |
| Entiat | 12:04:41 | -35.1 | Dark | Up | 28.2 | 29.0 | Low | 12:02:25 - 12:06:57 | 5281 |
| Manson/Chelan | 12:04:41 | -35.0 | Dark | Up | 28.4 | 29.1 | Low | 12:02:25 - 12:06:57 | 5279 |
| Tulelake | 12:04:28 | -37.0 | Dark | Up | 22.7 | 27.2 | Low | 12:02:12 - 12:06:44 | 5277 |
| Summerland | 12:04:45 | -34.3 | Dark | Up | 30.3 | 29.8 | Up | 12:02:29 - 12:07:01 | 5277 |
| Toppenish/White Swan | 12:04:38 | -35.4 | Dark | Up | 27.0 | 28.6 | Low | 12:02:22 - 12:06:54 | 5274 |
| Penticton | 12:04:44 | -34.3 | Dark | Up | 30.1 | 29.8 | Up | 12:02:28 - 12:07:00 | 5262 |
| Okanagan Falls | 12:04:44 | -34.3 | Dark | Up | 29.9 | 29.7 | Low | 12:02:28 - 12:07:00 | 5261 |
| North Lake | 12:04:31 | -36.3 | Dark | Up | 24.1 | 27.7 | Low | 12:02:15 - 12:06:47 | 5260 |
| Brewster | 12:04:42 | -34.7 | Dark | Up | 28.7 | 29.3 | Low | 12:02:26 - 12:06:58 | 5259 |
| Oliver | 12:04:43 | -34.3 | Dark | Up | 29.8 | 29.7 | Low | 12:02:27 - 12:06:59 | 5258 |
| Kelowna | 12:04:45 | -34.1 | Dark | Up | 30.4 | 30.0 | Up | 12:02:29 - 12:07:01 | 5256 |
| Fall River/Burney | 12:04:27 | -37.0 | Dark | Up | 22.0 | 27.0 | Low | 12:02:11 - 12:06:43 | 5256 |
| Okanogan | 12:04:41 | -34.5 | Dark | Up | 29.0 | 29.4 | Low | 12:02:25 - 12:06:57 | 5250 |
| Oroville | 12:04:42 | -34.3 | Dark | Up | 29.6 | 29.7 | Low | 12:02:26 - 12:06:58 | 5248 |
| Tonasket | 12:04:42 | -34.3 | Dark | Up | 29.4 | 29.6 | Low | 12:02:26 - 12:06:58 | 5245 |
| Anarchist Mountain Observatory | 12:04:43 | -34.2 | Dark | Up | 29.7 | 29.7 | Low | 12:02:27 - 12:06:59 | 5244 |
| Paisley | 12:04:30 | -36.2 | Dark | Up | 23.7 | 27.7 | Low | 12:02:14 - 12:06:46 | 5227 |
| Greenville | 12:04:24 | -36.8 | Dark | Up | 21.3 | 27.0 | Low | 12:02:08 - 12:06:40 | 5208 |
| Lakeview | 12:04:28 | -36.1 | Dark | Up | 23.3 | 27.6 | Low | 12:02:12 - 12:06:44 | 5205 |
| Quincy | 12:04:24 | -36.8 | Dark | Up | 21.1 | 27.0 | Low | 12:02:08 - 12:06:40 | 5204 |
| Gimple | 12:04:24 | -36.8 | Dark | Up | 21.3 | 27.1 | Low | 12:02:08 - 12:06:40 | 5202 |
| George/Umatilla | 12:04:36 | -34.8 | Dark | Up | 27.0 | 28.9 | Low | 12:02:20 - 12:06:52 | 5201 |
| Susanville | 12:04:24 | -36.6 | Dark | Up | 21.7 | 27.2 | Low | 12:02:08 - 12:06:40 | 5193 |
| Pasco | 12:04:36 | -34.6 | Dark | Up | 27.3 | 29.1 | Low | 12:02:20 - 12:06:52 | 5192 |
| Cedarville | 12:04:27 | -36.1 | Dark | Up | 22.8 | 27.6 | Low | 12:02:11 - 12:06:43 | 5181 |
| PNWRO | 12:04:35 | -34.5 | Dark | Up | 27.2 | 29.1 | Low | 12:02:19 - 12:06:51 | 5173 |
| Portola | 12:04:23 | -36.5 | Dark | Up | 21.2 | 27.1 | Low | 12:02:07 - 12:06:39 | 5168 |
| Reno | 12:04:21 | -36.0 | Dark | Up | 21.2 | 27.3 | Low | 12:02:05 - 12:06:37 | 5116 |
| Carson City | 12:04:21 | -36.0 | Dark | Up | 20.9 | 27.3 | Low | 12:02:05 - 12:06:37 | 5107 |
| Gardnerville | 12:04:20 | -36.0 | Dark | Up | 20.7 | 27.3 | Low | 12:02:04 - 12:06:36 | 5098 |
| CPSLO | 12:04:15 | -37.0 | Dark | Up | 17.1 | 26.4 | Really Low | 12:01:59 - 12:06:31 | 5080 |
| Yerington | 12:04:19 | -35.6 | Dark | Up | 20.9 | 27.5 | Low | 12:02:03 - 12:06:35 | 5057 |
| Lee Vining | 12:04:18 | -35.6 | Dark | Up | 20.0 | 27.3 | Low | 12:02:02 - 12:06:34 | 5030 |
| Hawthorne | 12:04:17 | -35.2 | Dark | Up | 20.7 | 27.6 | Low | 12:02:01 - 12:06:33 | 5008 |
| Bishop | 12:04:16 | -35.1 | Dark | Up | 19.7 | 27.5 | Really Low | 12:02:00 - 12:06:32 | 4963 |
| Lone Pine | 12:04:14 | -34.9 | Dark | Up | 19.2 | 27.5 | Really Low | 12:01:58 - 12:06:30 | 4919 |
| Tonopah | 12:04:16 | -34.1 | Dark | Up | 20.8 | 28.0 | Low | 12:02:00 - 12:06:32 | 4894 |
| Wildwood | 12:04:10 | -35.4 | Dark | Up | 16.7 | 26.9 | Really Low | 12:01:54 - 12:06:26 | 4892 |
| Beatty | 12:04:13 | -33.8 | Dark | Up | 19.9 | 28.0 | Really Low | 12:01:57 - 12:06:29 | 4830 |
| Indian Springs | 12:04:12 | -32.9 | Dark | Up | 20.1 | 28.3 | Low | 12:01:56 - 12:06:28 | 4739 |
| Idyllwild | 12:04:07 | -33.8 | Dark | Up | 17.1 | 27.5 | Really Low | 12:01:51 - 12:06:23 | 4736 |
| Henderson | 12:04:10 | -32.4 | Dark | Up | 19.8 | 28.4 | Really Low | 12:01:54 - 12:06:26 | 4671 |
| Searchlight/Boulder City | 12:04:08 | -32.3 | Dark | Up | 19.4 | 28.3 | Really Low | 12:01:52 - 12:06:24 | 4649 |
| Calipatria | 12:04:05 | -32.8 | Dark | Up | 17.1 | 27.8 | Really Low | 12:01:49 - 12:06:21 | 4625 |
| Laughlin/Bullhead City | 12:04:08 | -32.1 | Dark | Up | 19.2 | 28.4 | Really Low | 12:01:52 - 12:06:24 | 4614 |
| Mohave Valley | 12:04:08 | -32.1 | Dark | Up | 19.0 | 28.4 | Really Low | 12:01:52 - 12:06:24 | 4605 |
| Kingman/Dolan Springs | 12:04:08 | -31.6 | Dark | Up | 19.5 | 28.6 | Really Low | 12:01:52 - 12:06:24 | 4574 |
| Lake Havasu City | 12:04:07 | -31.8 | Dark | Up | 18.7 | 28.4 | Really Low | 12:01:51 - 12:06:23 | 4573 |
| Blythe | 12:04:05 | -32.0 | Dark | Up | 17.9 | 28.1 | Really Low | 12:01:49 - 12:06:21 | 4567 |
| Patrick | 12:04:08 | -31.5 | Dark | Up | 19.7 | 28.7 | Really Low | 12:01:52 - 12:06:24 | 4567 |
| Parker | 12:04:06 | -31.8 | Dark | Up | 18.4 | 28.3 | Really Low | 12:01:50 - 12:06:22 | 4560 |
| Yuma | 12:04:02 | -32.1 | Dark | Up | 17.0 | 28.0 | Really Low | 12:01:46 - 12:06:18 | 4540 |
| DCO | 12:04:07 | -30.9 | Dark | Up | 19.7 | 28.8 | Really Low | 12:01:51 - 12:06:23 | 4502 |
| Niwot | 12:04:12 | -24.8 | Dark | Up | 27.3 | 32.5 | Low | 12:01:56 - 12:06:28 | 4064 |
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 342842, (2019/01/27 12:07UT) Object RA Dec mag sep mel Deneb 20:41:25.9 +45:16:49 1.3 15.10 101 Alderamin 21:18:35.2 +62:35:09 2.4 6.04 105 PPM 022320 20:40:17.9 +60:30:23 6.4 1.08 100 PPM 022236 20:32:04.4 +60:25:19 7.4 0.12 99 342842 20:31:40.3 +60:18:26 13.7 99 Positions are for J2000
Event circumstances last updated at 2018/12/04 05:11:49 UT
Marc W. Buie, Southwest Research Institute