Event between (248835) 06SX368 and star UC4-660-017724 with event index number of 109882
Geocentric closest approach at 2018/03/12 05:24:32 UTC
J2000 position of star is 03:38:55.6 +41:54:20
Equinox of date position of star is 03:40:08.8 +41:57:48
Stellar brightness R=14.6,
use SENSEUP=128
Star is 127 degrees from the moon.
Moon is 25% illuminated.
TNO apparent brightness V=21.6
[RECON map]
TNO is 15.0 AU from the Sun
and 15.3 AU from the Earth.
The TNO is moving 22.1
km/sec on the sky relative to the star, or,
7.2 arcsec/hr.
The 1-sigma error in the time of the event is 87 seconds.
The 1-sigma cross-track error in the shadow position is
1358 km.
The sky-plane scale is
11104.0 km/arcsec.
The TNO has an absolute magnitude Hv=9.5
Diameter=75.9 km assuming a 5% albedo -- 3.4 sec chord
Diameter=31.0 km assuming a 30% albedo -- 1.4 sec chord
Dynamical classification is CENTAURR
Star training set for 248835, (2018/03/12 05:25UT) Object RA Dec mag sep mel Aldebaran 04:36:58.0 +16:32:40 0.8 28.19 138 Algol 03:09:21.6 +41:01:28 2.1 5.84 121 PPM 046386 03:39:14.4 +42:38:29 6.2 0.70 126 PPM 046433 03:42:03.6 +41:53:57 8.2 0.36 127 PPM 046417 03:40:39.9 +41:44:40 8.8 0.24 127 248835 03:40:09.4 +41:57:50 14.6 127 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 5.3 km
RECON observability=1.0 and success probability=2.8%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Niwot | 05:26:43 | -46.4 | Dark | Down | 24.5 | 305.2 | Low | 05:18:57 - 05:34:28 | 9351 |
| Oroville | 05:26:15 | -32.9 | Dark | Down | 37.7 | 293.4 | Up | 05:18:29 - 05:34:00 | 8825 |
| Tonasket | 05:26:16 | -33.1 | Dark | Down | 37.6 | 293.6 | Up | 05:18:30 - 05:34:01 | 8820 |
| Okanogan | 05:26:18 | -33.2 | Dark | Down | 37.6 | 293.8 | Up | 05:18:32 - 05:34:03 | 8805 |
| Brewster | 05:26:19 | -33.3 | Dark | Down | 37.6 | 293.8 | Up | 05:18:33 - 05:34:04 | 8788 |
| PNWRO | 05:26:28 | -35.1 | Dark | Down | 36.1 | 295.7 | Up | 05:18:43 - 05:34:14 | 8783 |
| Pasco | 05:26:27 | -34.8 | Dark | Down | 36.4 | 295.5 | Up | 05:18:41 - 05:34:12 | 8777 |
| DCO | 05:27:11 | -45.4 | Dark | Down | 26.8 | 304.0 | Low | 05:19:26 - 05:34:57 | 8772 |
| Manson/Chelan | 05:26:20 | -33.3 | Dark | Down | 37.7 | 293.8 | Up | 05:18:34 - 05:34:05 | 8764 |
| George/Umatilla | 05:26:29 | -34.9 | Dark | Down | 36.4 | 295.6 | Up | 05:18:43 - 05:34:14 | 8757 |
| Entiat | 05:26:21 | -33.4 | Dark | Down | 37.7 | 293.9 | Up | 05:18:35 - 05:34:06 | 8755 |
| Wenatchee | 05:26:22 | -33.5 | Dark | Down | 37.6 | 294.0 | Up | 05:18:36 - 05:34:07 | 8744 |
| Patrick | 05:27:10 | -44.8 | Dark | Down | 27.4 | 303.7 | Low | 05:19:25 - 05:34:56 | 8742 |
| Kingman/Dolan Springs | 05:27:11 | -44.8 | Dark | Down | 27.4 | 303.7 | Low | 05:19:26 - 05:34:57 | 8722 |
| Ellensburg | 05:26:24 | -33.6 | Dark | Down | 37.6 | 294.2 | Up | 05:18:39 - 05:34:10 | 8721 |
| Toppenish/White Swan | 05:26:27 | -34.1 | Dark | Down | 37.2 | 294.7 | Up | 05:18:41 - 05:34:12 | 8713 |
| Yakima | 05:26:26 | -33.8 | Dark | Down | 37.4 | 294.5 | Up | 05:18:41 - 05:34:12 | 8710 |
| Henderson | 05:27:09 | -43.7 | Dark | Down | 28.5 | 303.0 | Low | 05:19:23 - 05:34:54 | 8698 |
| Laughlin/Bullhead City | 05:27:12 | -44.4 | Dark | Down | 27.8 | 303.5 | Low | 05:19:26 - 05:34:57 | 8691 |
| Lake Havasu City | 05:27:14 | -45.0 | Dark | Down | 27.2 | 303.9 | Low | 05:19:29 - 05:35:00 | 8681 |
| Mohave Valley | 05:27:13 | -44.6 | Dark | Down | 27.6 | 303.6 | Low | 05:19:28 - 05:34:59 | 8681 |
| Searchlight/Boulder City | 05:27:11 | -44.0 | Dark | Down | 28.2 | 303.3 | Low | 05:19:25 - 05:34:56 | 8681 |
| Indian Springs | 05:27:07 | -42.9 | Dark | Down | 29.3 | 302.5 | Low | 05:19:21 - 05:34:52 | 8676 |
| Goldendale | 05:26:30 | -34.2 | Dark | Down | 37.3 | 294.9 | Up | 05:18:44 - 05:34:15 | 8675 |
| Parker | 05:27:16 | -45.2 | Dark | Down | 27.0 | 304.1 | Low | 05:19:30 - 05:35:01 | 8670 |
| The Dalles | 05:26:30 | -34.1 | Dark | Down | 37.4 | 294.9 | Up | 05:18:45 - 05:34:16 | 8649 |
| Maupin | 05:26:32 | -34.4 | Dark | Down | 37.1 | 295.2 | Up | 05:18:47 - 05:34:18 | 8643 |
| Tonopah | 05:27:02 | -41.0 | Dark | Down | 31.1 | 301.2 | Up | 05:19:16 - 05:34:47 | 8637 |
| Blythe | 05:27:18 | -45.4 | Dark | Down | 26.9 | 304.2 | Low | 05:19:33 - 05:35:04 | 8632 |
| Madras/Culver | 05:26:35 | -34.7 | Dark | Down | 36.9 | 295.6 | Up | 05:18:49 - 05:34:20 | 8625 |
| Beatty | 05:27:07 | -42.0 | Dark | Down | 30.2 | 302.0 | Up | 05:19:21 - 05:34:52 | 8623 |
| Redmond | 05:26:37 | -34.9 | Dark | Down | 36.8 | 295.8 | Up | 05:18:51 - 05:34:22 | 8611 |
| Paisley | 05:26:43 | -36.2 | Dark | Down | 35.7 | 297.2 | Up | 05:18:58 - 05:34:29 | 8598 |
| Bend | 05:26:38 | -34.9 | Dark | Down | 36.8 | 295.9 | Up | 05:18:52 - 05:34:23 | 8597 |
| North Lake | 05:26:41 | -35.7 | Dark | Down | 36.2 | 296.6 | Up | 05:18:56 - 05:34:27 | 8595 |
| Yuma | 05:27:21 | -45.9 | Dark | Down | 26.4 | 304.6 | Low | 05:19:36 - 05:35:07 | 8594 |
| Lakeview | 05:26:45 | -36.6 | Dark | Down | 35.3 | 297.6 | Up | 05:19:00 - 05:34:31 | 8593 |
| Sisters | 05:26:37 | -34.6 | Dark | Down | 37.1 | 295.6 | Up | 05:18:51 - 05:34:22 | 8590 |
| Oregon Observatory | 05:26:38 | -35.0 | Dark | Down | 36.8 | 296.0 | Up | 05:18:52 - 05:34:23 | 8584 |
| Cedarville | 05:26:48 | -37.1 | Dark | Down | 34.9 | 298.0 | Up | 05:19:03 - 05:34:34 | 8582 |
| La Pine/Gilchrist | 05:26:39 | -35.1 | Dark | Down | 36.8 | 296.1 | Up | 05:18:54 - 05:34:25 | 8575 |
| Hawthorne | 05:27:01 | -39.8 | Dark | Down | 32.3 | 300.4 | Up | 05:19:15 - 05:34:46 | 8570 |
| Calipatria | 05:27:21 | -45.0 | Dark | Down | 27.3 | 304.1 | Low | 05:19:35 - 05:35:06 | 8556 |
| Yerington | 05:26:59 | -39.2 | Dark | Down | 32.9 | 300.0 | Up | 05:19:13 - 05:34:44 | 8555 |
| Bishop | 05:27:05 | -40.6 | Dark | Down | 31.6 | 301.1 | Up | 05:19:20 - 05:34:51 | 8542 |
| Reno | 05:26:57 | -38.5 | Dark | Down | 33.7 | 299.4 | Up | 05:19:11 - 05:34:42 | 8535 |
| Lone Pine | 05:27:08 | -41.3 | Dark | Down | 30.9 | 301.7 | Up | 05:19:23 - 05:34:54 | 8534 |
| Carson City | 05:26:58 | -38.7 | Dark | Down | 33.5 | 299.6 | Up | 05:19:13 - 05:34:44 | 8524 |
| Tulelake | 05:26:47 | -36.1 | Dark | Down | 35.9 | 297.2 | Up | 05:19:01 - 05:34:32 | 8521 |
| Lee Vining | 05:27:03 | -39.8 | Dark | Down | 32.4 | 300.6 | Up | 05:19:17 - 05:34:48 | 8521 |
| Chiloquin | 05:26:44 | -35.5 | Dark | Down | 36.5 | 296.7 | Up | 05:18:59 - 05:34:30 | 8519 |
| Gardnerville | 05:26:59 | -38.9 | Dark | Down | 33.3 | 299.8 | Up | 05:19:14 - 05:34:45 | 8518 |
| Susanville | 05:26:53 | -37.4 | Dark | Down | 34.7 | 298.5 | Up | 05:19:08 - 05:34:39 | 8516 |
| Klamath Falls | 05:26:45 | -35.7 | Dark | Down | 36.3 | 296.9 | Up | 05:19:00 - 05:34:31 | 8512 |
| Idyllwild | 05:27:19 | -43.8 | Dark | Down | 28.4 | 303.5 | Low | 05:19:33 - 05:35:04 | 8507 |
| Portola | 05:26:56 | -37.9 | Dark | Down | 34.2 | 299.0 | Up | 05:19:10 - 05:34:41 | 8506 |
| Fall River/Burney | 05:26:51 | -36.6 | Dark | Down | 35.5 | 297.8 | Up | 05:19:05 - 05:34:36 | 8495 |
| Gimple | 05:26:54 | -37.5 | Dark | Down | 34.7 | 298.6 | Up | 05:19:09 - 05:34:40 | 8494 |
| Greenville | 05:26:54 | -37.4 | Dark | Down | 34.7 | 298.6 | Up | 05:19:09 - 05:34:40 | 8490 |
| Quincy | 05:26:55 | -37.5 | Dark | Down | 34.6 | 298.7 | Up | 05:19:10 - 05:34:41 | 8483 |
| Wildwood | 05:27:18 | -42.3 | Dark | Down | 30.0 | 302.7 | Low | 05:19:33 - 05:35:04 | 8404 |
| CPSLO | 05:27:14 | -40.2 | Dark | Down | 32.0 | 301.5 | Up | 05:19:29 - 05:35:00 | 8324 |
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 248835, (2018/03/12 05:25UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 28.19 138 Algol 03:08:10.1 +40:57:20 2.1 5.84 121 PPM 046386 03:38:00.2 +42:34:58 6.2 0.70 126 PPM 046433 03:40:49.8 +41:50:30 8.2 0.36 127 PPM 046417 03:39:26.2 +41:41:10 8.8 0.24 127 248835 03:38:55.6 +41:54:20 14.6 127 Positions are for J2000
Event circumstances last updated at 2018/01/15 17:51:30 UT
Marc W. Buie, Southwest Research Institute