Event between (342842) 08YB3 and star UC4-787-029954 with event index number of 336506
Geocentric closest approach at 2018/10/18 04:37:52 UTC
J2000 position of star is 19:47:12.8 +67:19:15
Equinox of date position of star is 19:47:16.8 +67:22:04
Stellar brightness R=16.2,
use SENSEUP=128
Star is 87 degrees from the moon.
Moon is 64% illuminated.
TNO apparent brightness V=20.5
[RECON map]
TNO is 12.0 AU from the Sun
and 11.8 AU from the Earth.
The TNO is moving 37.5
km/sec on the sky relative to the star, or,
15.8 arcsec/hr.
The 1-sigma error in the time of the event is 32 seconds.
The 1-sigma cross-track error in the shadow position is
429 km.
The sky-plane scale is
8558.7 km/arcsec.
The TNO has an absolute magnitude Hv=9.3
Diameter=83.2 km assuming a 5% albedo -- 2.2 sec chord
Diameter=34.0 km assuming a 30% albedo -- 0.9 sec chord
Dynamical classification is CENTAURR
Star training set for 342842, (2018/10/18 04:38UT) Object RA Dec mag sep mel Deneb 20:42:04.4 +45:20:54 1.3 23.17 64 Alderamin 21:19:01.6 +62:39:56 2.4 10.68 81 PPM 021724 19:44:16.5 +69:22:59 5.9 2.03 89 PPM 021745 19:46:05.0 +67:47:06 7.9 0.43 87 PPM 021764 19:47:32.8 +67:19:54 9.4 0.04 86 342842 19:47:16.9 +67:22:04 16.2 87 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 20.3 km
RECON observability=1.0 and success probability=0.0%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Niwot | 04:38:21 | -48.4 | Dark | Up | 50.1 | 330.8 | Up | 04:35:12 - 04:41:30 | 5892 |
| Yuma | 04:38:51 | -45.6 | Dark | Up | 46.7 | 336.6 | Up | 04:35:42 - 04:42:00 | 5707 |
| Parker | 04:38:47 | -45.3 | Dark | Up | 48.0 | 335.9 | Up | 04:35:38 - 04:41:56 | 5667 |
| Patrick | 04:38:44 | -45.1 | Dark | Up | 49.0 | 335.2 | Up | 04:35:35 - 04:41:53 | 5638 |
| Calipatria | 04:38:51 | -44.7 | Dark | Up | 47.4 | 336.7 | Up | 04:35:42 - 04:42:00 | 5629 |
| Mohave Valley | 04:38:47 | -44.8 | Dark | Up | 48.7 | 335.6 | Up | 04:35:38 - 04:41:56 | 5616 |
| Searchlight/Boulder City | 04:38:46 | -44.3 | Dark | Up | 49.4 | 335.4 | Up | 04:35:37 - 04:41:55 | 5567 |
| Idyllwild | 04:38:52 | -43.6 | Dark | Up | 48.4 | 336.8 | Up | 04:35:43 - 04:42:01 | 5523 |
| Bishop | 04:38:47 | -40.9 | Dark | Up | 52.3 | 335.5 | Up | 04:35:38 - 04:41:56 | 5254 |
| Hawthorne | 04:38:45 | -40.3 | Dark | Up | 53.4 | 335.0 | Up | 04:35:36 - 04:41:54 | 5186 |
| CPSLO | 04:38:54 | -40.0 | Dark | Up | 51.1 | 337.3 | Up | 04:35:45 - 04:42:03 | 5183 |
| Lee Vining | 04:38:47 | -40.2 | Dark | Up | 53.0 | 335.4 | Up | 04:35:38 - 04:41:56 | 5179 |
| Yerington | 04:38:45 | -39.7 | Dark | Up | 54.0 | 334.9 | Up | 04:35:36 - 04:41:54 | 5130 |
| Carson City | 04:38:45 | -39.2 | Dark | Up | 54.4 | 335.0 | Up | 04:35:36 - 04:41:54 | 5080 |
| Portola | 04:38:44 | -38.5 | Dark | Up | 55.2 | 334.8 | Up | 04:35:35 - 04:41:53 | 5007 |
| Quincy | 04:38:45 | -38.1 | Dark | Up | 55.4 | 334.9 | Up | 04:35:36 - 04:41:54 | 4969 |
| Gimple | 04:38:44 | -38.1 | Dark | Up | 55.6 | 334.8 | Up | 04:35:35 - 04:41:53 | 4966 |
| Greenville | 04:38:44 | -38.0 | Dark | Up | 55.6 | 334.8 | Up | 04:35:35 - 04:41:53 | 4960 |
| Cedarville | 04:38:40 | -38.0 | Dark | Up | 56.6 | 333.6 | Up | 04:35:31 - 04:41:49 | 4948 |
| Lakeview | 04:38:39 | -37.6 | Dark | Up | 57.3 | 333.3 | Up | 04:35:30 - 04:41:48 | 4907 |
| Paisley | 04:38:38 | -37.3 | Dark | Up | 57.8 | 333.0 | Up | 04:35:29 - 04:41:47 | 4870 |
| Tulelake | 04:38:41 | -36.9 | Dark | Up | 57.4 | 333.8 | Up | 04:35:32 - 04:41:50 | 4844 |
| North Lake | 04:38:37 | -36.8 | Dark | Up | 58.4 | 332.7 | Up | 04:35:28 - 04:41:46 | 4822 |
| PNWRO | 04:38:29 | -36.8 | Dark | Up | 60.1 | 329.8 | Up | 04:35:20 - 04:41:38 | 4809 |
| Chiloquin | 04:38:40 | -36.4 | Dark | Up | 58.1 | 333.5 | Up | 04:35:31 - 04:41:49 | 4791 |
| Pasco | 04:38:28 | -36.6 | Dark | Up | 60.4 | 329.6 | Up | 04:35:19 - 04:41:37 | 4783 |
| La Pine/Gilchrist | 04:38:37 | -36.2 | Dark | Up | 59.0 | 332.6 | Up | 04:35:28 - 04:41:46 | 4763 |
| Oregon Observatory | 04:38:36 | -36.2 | Dark | Up | 59.1 | 332.4 | Up | 04:35:27 - 04:41:45 | 4757 |
| Redmond | 04:38:35 | -36.2 | Dark | Up | 59.4 | 332.0 | Up | 04:35:26 - 04:41:44 | 4756 |
| Madras/Culver | 04:38:34 | -36.1 | Dark | Up | 59.7 | 331.7 | Up | 04:35:25 - 04:41:43 | 4742 |
| Sisters | 04:38:36 | -35.9 | Dark | Up | 59.6 | 332.1 | Up | 04:35:27 - 04:41:45 | 4729 |
| Maupin | 04:38:33 | -35.8 | Dark | Up | 60.2 | 331.2 | Up | 04:35:24 - 04:41:42 | 4718 |
| Goldendale | 04:38:31 | -35.7 | Dark | Up | 60.6 | 330.6 | Up | 04:35:22 - 04:41:40 | 4703 |
| Toppenish/White Swan | 04:38:29 | -35.7 | Dark | Up | 61.0 | 329.9 | Up | 04:35:20 - 04:41:38 | 4701 |
| The Dalles | 04:38:32 | -35.6 | Dark | Up | 60.6 | 330.9 | Up | 04:35:23 - 04:41:41 | 4691 |
| Yakima | 04:38:29 | -35.5 | Dark | Up | 61.2 | 329.8 | Up | 04:35:20 - 04:41:38 | 4680 |
| Ellensburg | 04:38:28 | -35.3 | Dark | Up | 61.6 | 329.4 | Up | 04:35:19 - 04:41:37 | 4660 |
| Wenatchee | 04:38:27 | -35.3 | Dark | Up | 61.9 | 329.0 | Up | 04:35:18 - 04:41:36 | 4653 |
| Brewster | 04:38:25 | -35.3 | Dark | Up | 62.3 | 328.1 | Up | 04:35:16 - 04:41:34 | 4649 |
| Okanogan | 04:38:24 | -35.3 | Dark | Up | 62.4 | 327.8 | Up | 04:35:15 - 04:41:33 | 4646 |
| Manson/Chelan | 04:38:26 | -35.2 | Dark | Up | 62.2 | 328.4 | Up | 04:35:17 - 04:41:35 | 4638 |
| Tonasket | 04:38:23 | -35.2 | Dark | Up | 62.6 | 327.4 | Up | 04:35:14 - 04:41:32 | 4637 |
| Oroville | 04:38:22 | -35.1 | Dark | Up | 62.8 | 327.1 | Up | 04:35:13 - 04:41:31 | 4624 |
| Southern Okanagan | 04:38:22 | -34.9 | Dark | Up | 63.1 | 326.9 | Up | 04:35:13 - 04:41:31 | 4604 |
| Okanagan Falls | 04:38:22 | -34.8 | Dark | Up | 63.2 | 326.7 | Up | 04:35:13 - 04:41:31 | 4594 |
| Penticton | 04:38:21 | -34.7 | Dark | Up | 63.4 | 326.5 | Up | 04:35:12 - 04:41:30 | 4585 |
| Rutland | 04:38:20 | -34.6 | Dark | Up | 63.6 | 326.1 | Up | 04:35:11 - 04:41:29 | -4575 |
| Entiat | 04:38:26 | -35.2 | Dark | Up | 62.0 | 328.7 | Up | 04:35:17 - 04:41:35 | -4645 |
| Bend | 04:38:36 | -36.2 | Dark | Up | 59.3 | 332.2 | Up | 04:35:27 - 04:41:45 | -4757 |
| George/Umatilla | 04:38:29 | -36.6 | Dark | Up | 60.2 | 330.0 | Up | 04:35:20 - 04:41:38 | -4787 |
| Klamath Falls | 04:38:40 | -36.6 | Dark | Up | 57.8 | 333.8 | Up | 04:35:31 - 04:41:49 | -4812 |
| Fall River/Burney | 04:38:43 | -37.4 | Dark | Up | 56.6 | 334.4 | Up | 04:35:34 - 04:41:52 | -4890 |
| Susanville | 04:38:43 | -38.1 | Dark | Up | 55.8 | 334.5 | Up | 04:35:34 - 04:41:52 | -4968 |
| Reno | 04:38:44 | -39.1 | Dark | Up | 54.7 | 334.8 | Up | 04:35:35 - 04:41:53 | -5062 |
| Gardnerville | 04:38:45 | -39.3 | Dark | Up | 54.1 | 335.1 | Up | 04:35:36 - 04:41:54 | -5093 |
| Tonopah | 04:38:43 | -41.5 | Dark | Up | 52.5 | 334.8 | Up | 04:35:34 - 04:41:52 | -5301 |
| Lone Pine | 04:38:48 | -41.5 | Dark | Up | 51.5 | 335.8 | Up | 04:35:39 - 04:41:57 | -5309 |
| Wildwood | 04:38:54 | -42.0 | Dark | Up | 49.3 | 337.2 | Up | 04:35:45 - 04:42:03 | -5377 |
| Beatty | 04:38:45 | -42.3 | Dark | Up | 51.3 | 335.3 | Up | 04:35:36 - 04:41:54 | -5383 |
| Indian Springs | 04:38:44 | -43.2 | Dark | Up | 50.6 | 335.1 | Up | 04:35:35 - 04:41:53 | -5468 |
| Henderson | 04:38:44 | -44.0 | Dark | Up | 49.9 | 335.2 | Up | 04:35:35 - 04:41:53 | -5537 |
| Laughlin/Bullhead City | 04:38:46 | -44.6 | Dark | Up | 49.0 | 335.5 | Up | 04:35:37 - 04:41:55 | -5603 |
| Kingman/Dolan Springs | 04:38:45 | -45.0 | Dark | Up | 48.8 | 335.3 | Up | 04:35:36 - 04:41:54 | -5636 |
| Lake Havasu City | 04:38:47 | -45.1 | Dark | Up | 48.3 | 335.7 | Up | 04:35:38 - 04:41:56 | -5650 |
| Blythe | 04:38:49 | -45.2 | Dark | Up | 47.6 | 336.2 | Up | 04:35:40 - 04:41:58 | -5670 |
| DCO | 04:38:43 | -45.7 | Dark | Up | 48.4 | 335.1 | Up | 04:35:34 - 04:41:52 | -5697 |
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, (2018/10/18 04:38UT) Object RA Dec mag sep mel Deneb 20:41:25.9 +45:16:49 1.3 23.17 64 Alderamin 21:18:35.2 +62:35:09 2.4 10.68 81 PPM 021724 19:44:18.6 +69:20:14 5.9 2.03 89 PPM 021745 19:46:02.2 +67:44:18 7.9 0.43 87 PPM 021764 19:47:28.6 +67:17:04 9.4 0.04 86 342842 19:47:12.8 +67:19:15 16.2 86 Positions are for J2000
Event circumstances last updated at 2018/10/11 06:03:36 UT
Marc W. Buie, Southwest Research Institute