Event between 12HE85 and star UC4-349-164722 with event index number of 120438
Geocentric closest approach at 2017/08/09 08:54:14 UTC
J2000 position of star is 19:02:16.3 -20:16:44
Equinox of date position of star is 19:03:16.4 -20:15:12
Stellar brightness R=16.2
Star is 51 degrees from the moon.
Moon is 97% illuminated.
TNO apparent brightness V=26.1
[RECON map]
TNO is 40.1 AU from the Sun
and 39.3 AU from the Earth.
The TNO is moving 19.8
km/sec on the sky relative to the star, or,
2.5 arcsec/hr.
The 1-sigma error in the time of the event is 1393 seconds.
The 1-sigma cross-track error in the shadow position is
1669 km.
The sky-plane scale is
28472.8 km/arcsec.
The TNO has an absolute magnitude Hv=10.1
Diameter=58.9 km assuming a 5% albedo -- 3.0 sec chord
Diameter=24.0 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is CLASSICAL
Star training set for 12HE85, (2017/08/09 08:54UT) Object RA Dec mag sep mel Antares 16:30:29.4 -26:28:11 0.9 35.49 86 Nunki 18:56:21.3 -26:16:24 2.0 6.23 53 PPM 235418 19:04:06.0 -19:13:08 5.9 1.05 51 PPM 269246 19:04:35.5 -20:06:06 8.2 0.34 51 PPM 269222 19:03:06.4 -20:19:57 9.2 0.09 51 12HE85 19:03:18.8 -20:15:09 16.2 51 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
0.6 sigma about the mid-time.
The median site spacing is 0.0 km
RECON observability=0.0 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) |
| Oroville | 08:51:08 | -24.4 | Dark | Up | 9.7 | 223.0 | Really Low | 08:36:08 - 09:06:08 | 844 |
| Tonasket | 08:51:07 | -24.7 | Dark | Up | 9.8 | 223.1 | Really Low | 08:36:07 - 09:06:07 | 830 |
| Okanogan | 08:51:07 | -25.0 | Dark | Up | 10.2 | 223.0 | Really Low | 08:36:07 - 09:06:07 | 815 |
| Brewster | 08:51:06 | -25.3 | Dark | Up | 10.5 | 222.8 | Really Low | 08:36:06 - 09:06:06 | 805 |
| Manson/Chelan | 08:51:07 | -25.6 | Dark | Up | 10.8 | 222.6 | Really Low | 08:36:07 - 09:06:07 | 802 |
| Entiat | 08:51:06 | -25.8 | Dark | Up | 11.0 | 222.5 | Really Low | 08:36:06 - 09:06:06 | 792 |
| Wenatchee | 08:51:06 | -26.1 | Dark | Up | 11.2 | 222.5 | Really Low | 08:36:06 - 09:06:06 | 779 |
| Ellensburg | 08:51:05 | -26.5 | Dark | Up | 11.6 | 222.3 | Really Low | 08:36:05 - 09:06:05 | 761 |
| Yakima | 08:51:04 | -26.9 | Dark | Up | 11.9 | 222.4 | Really Low | 08:36:04 - 09:06:04 | 738 |
| Toppenish/White Swan | 08:51:04 | -27.1 | Dark | Up | 12.0 | 222.6 | Really Low | 08:36:04 - 09:06:04 | 721 |
| Goldendale | 08:51:03 | -27.7 | Dark | Up | 12.6 | 222.3 | Really Low | 08:36:03 - 09:06:03 | 699 |
| The Dalles | 08:51:04 | -28.0 | Dark | Up | 12.9 | 222.0 | Really Low | 08:36:04 - 09:06:04 | 695 |
| Pasco | 08:51:00 | -27.0 | Dark | Up | 11.5 | 223.6 | Really Low | 08:36:00 - 09:06:00 | 681 |
| Maupin | 08:51:02 | -28.4 | Dark | Up | 13.2 | 222.2 | Really Low | 08:36:02 - 09:06:02 | 667 |
| George/Umatilla | 08:51:00 | -27.4 | Dark | Up | 11.8 | 223.5 | Really Low | 08:36:00 - 09:06:00 | 666 |
| PNWRO | 08:50:59 | -27.2 | Dark | Up | 11.6 | 223.8 | Really Low | 08:35:59 - 09:05:59 | 660 |
| Madras/Culver | 08:51:01 | -28.9 | Dark | Up | 13.6 | 222.2 | Really Low | 08:36:01 - 09:06:01 | 635 |
| Sisters | 08:51:02 | -29.3 | Dark | Up | 14.1 | 221.9 | Really Low | 08:36:02 - 09:06:02 | 627 |
| Redmond | 08:51:01 | -29.3 | Dark | Up | 13.9 | 222.2 | Really Low | 08:36:01 - 09:06:01 | 614 |
| Bend | 08:51:00 | -29.5 | Dark | Up | 14.2 | 222.1 | Really Low | 08:36:00 - 09:06:00 | 605 |
| Oregon Observatory | 08:51:00 | -29.7 | Dark | Up | 14.4 | 222.1 | Really Low | 08:36:00 - 09:06:00 | 598 |
| La Pine/Gilchrist | 08:51:00 | -29.9 | Dark | Up | 14.5 | 222.0 | Really Low | 08:36:00 - 09:06:00 | 587 |
| North Lake | 08:50:57 | -30.2 | Dark | Up | 14.6 | 222.6 | Really Low | 08:35:57 - 09:05:57 | 543 |
| Chiloquin | 08:50:58 | -31.0 | Dark | Up | 15.5 | 221.9 | Really Low | 08:35:58 - 09:05:58 | 526 |
| Klamath Falls | 08:50:57 | -31.4 | Dark | Up | 15.8 | 222.1 | Really Low | 08:35:57 - 09:05:57 | 502 |
| Paisley | 08:50:55 | -30.7 | Dark | Up | 14.8 | 223.0 | Really Low | 08:35:55 - 09:05:55 | 498 |
| Tulelake | 08:50:56 | -31.6 | Dark | Up | 15.8 | 222.4 | Really Low | 08:35:56 - 09:05:56 | 476 |
| Lakeview | 08:50:53 | -31.2 | Dark | Up | 15.1 | 223.2 | Really Low | 08:35:53 - 09:05:53 | 460 |
| Fall River/Burney | 08:50:54 | -32.5 | Dark | Up | 16.4 | 222.6 | Really Low | 08:35:54 - 09:05:54 | 414 |
| Cedarville | 08:50:51 | -31.8 | Dark | Up | 15.5 | 223.5 | Really Low | 08:35:51 - 09:05:51 | 412 |
| Susanville | 08:50:50 | -33.0 | Dark | Up | 16.5 | 223.3 | Really Low | 08:35:50 - 09:05:50 | 351 |
| Greenville | 08:50:50 | -33.3 | Dark | Up | 16.9 | 223.1 | Really Low | 08:35:50 - 09:05:50 | 341 |
| Gimple | 08:50:50 | -33.3 | Dark | Up | 16.8 | 223.2 | Really Low | 08:35:50 - 09:05:50 | 338 |
| Quincy | 08:50:50 | -33.5 | Dark | Up | 17.0 | 223.2 | Really Low | 08:35:50 - 09:05:50 | 327 |
| Portola | 08:50:49 | -33.5 | Dark | Up | 16.9 | 223.6 | Really Low | 08:35:49 - 09:05:49 | 305 |
| Reno | 08:50:46 | -33.7 | Dark | Up | 16.7 | 224.2 | Really Low | 08:35:46 - 09:05:46 | 268 |
| Carson City | 08:50:45 | -34.0 | Dark | Up | 17.0 | 224.3 | Really Low | 08:35:45 - 09:05:45 | 243 |
| Gardnerville | 08:50:45 | -34.2 | Dark | Up | 17.1 | 224.3 | Really Low | 08:35:45 - 09:05:45 | 224 |
| Yerington | 08:50:43 | -34.1 | Dark | Up | 16.8 | 224.8 | Really Low | 08:35:43 - 09:05:43 | 211 |
| Hawthorne | 08:50:41 | -34.4 | Dark | Up | 16.8 | 225.3 | Really Low | 08:35:41 - 09:05:41 | 162 |
| Lee Vining | 08:50:41 | -35.1 | Dark | Up | 17.5 | 225.0 | Really Low | 08:35:41 - 09:05:41 | 137 |
| Tonopah | 08:50:36 | -34.6 | Dark | Up | 16.3 | 226.5 | Really Low | 08:35:36 - 09:05:36 | 89 |
| Bishop | 08:50:38 | -35.5 | Dark | Up | 17.5 | 225.7 | Really Low | 08:35:38 - 09:05:38 | 73 |
| Lone Pine | 08:50:35 | -36.2 | Dark | Up | 17.8 | 226.2 | Really Low | 08:35:35 - 09:05:35 | 11 |
| Beatty | 08:50:32 | -35.6 | Dark | Up | 16.9 | 227.1 | Really Low | 08:35:32 - 09:05:32 | -12 |
| CPSLO | 08:50:41 | -38.0 | Dark | Up | 20.2 | 224.5 | Low | 08:35:41 - 09:05:41 | -14 |
| Indian Springs | 08:50:29 | -35.6 | Dark | Up | 16.5 | 228.0 | Really Low | 08:35:29 - 09:05:29 | -69 |
| Niwot | 08:50:12 | -29.1 | Dark | Up | 7.9 | 235.0 | Really Low | 08:35:12 - 09:05:12 | -129 |
| Henderson | 08:50:26 | -36.0 | Dark | Up | 16.4 | 228.6 | Really Low | 08:35:26 - 09:05:26 | -131 |
| Wildwood | 08:50:32 | -38.7 | Dark | Up | 19.9 | 226.4 | Really Low | 08:35:32 - 09:05:32 | -166 |
| Searchlight/Boulder City | 08:50:24 | -36.5 | Dark | Up | 16.8 | 228.8 | Really Low | 08:35:24 - 09:05:24 | -176 |
| Laughlin/Bullhead City | 08:50:23 | -36.7 | Dark | Up | 16.7 | 229.1 | Really Low | 08:35:23 - 09:05:23 | -210 |
| Patrick | 08:50:21 | -36.3 | Dark | Up | 16.2 | 229.6 | Really Low | 08:35:21 - 09:05:21 | -213 |
| Kingman/Dolan Springs | 08:50:21 | -36.5 | Dark | Up | 16.4 | 229.5 | Really Low | 08:35:21 - 09:05:21 | -224 |
| Mohave Valley | 08:50:22 | -36.9 | Dark | Up | 16.9 | 229.2 | Really Low | 08:35:22 - 09:05:22 | -231 |
| Idyllwild | 08:50:26 | -38.6 | Dark | Up | 19.0 | 227.9 | Really Low | 08:35:26 - 09:05:26 | -252 |
| DCO | 08:50:19 | -36.3 | Dark | Up | 15.9 | 230.1 | Really Low | 08:35:19 - 09:05:19 | -259 |
| Lake Havasu City | 08:50:21 | -37.2 | Dark | Up | 17.0 | 229.4 | Really Low | 08:35:21 - 09:05:21 | -270 |
| Parker | 08:50:20 | -37.6 | Dark | Up | 17.2 | 229.5 | Really Low | 08:35:20 - 09:05:20 | -298 |
| Blythe | 08:50:20 | -38.1 | Dark | Up | 17.8 | 229.4 | Really Low | 08:35:20 - 09:05:20 | -330 |
| Calipatria | 08:50:21 | -38.9 | Dark | Up | 18.7 | 228.9 | Really Low | 08:35:21 - 09:05:21 | -339 |
| Yuma | 08:50:18 | -39.0 | Dark | Up | 18.4 | 229.6 | Really Low | 08:35:18 - 09:05:18 | -402 |
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 12HE85, (2017/08/09 08:54UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:55 0.9 35.49 86 Nunki 18:55:15.9 -26:17:49 2.0 6.23 53 PPM 235418 19:03:04.0 -19:14:44 5.9 1.05 51 PPM 269246 19:03:33.1 -20:07:43 8.2 0.34 51 PPM 269222 19:02:03.9 -20:21:32 9.2 0.09 51 12HE85 19:02:16.3 -20:16:44 16.2 51 Positions are for J2000
Event circumstances last updated at 2016/12/09 18:52:21 UT
Marc W. Buie, Southwest Research Institute