Event between (516977) 12HZ84 and star GA0700:32595639 with event index number of 267049
Geocentric closest approach at 2019/08/01 08:33:10 UTC
J2000 position of star is 19:15:03.4 -19:24:26
Equinox of date position of star is 19:16:11.8 -19:22:20
Stellar brightness G=16.5,
use SENSEUP=128
Star is 155 degrees from the moon.
Moon is 0% illuminated.
TNO apparent brightness V=24.9
[RECON map]
TNO is 40.0 AU from the Sun
and 39.1 AU from the Earth.
The TNO is moving 22.4
km/sec on the sky relative to the star, or,
2.8 arcsec/hr.
The 1-sigma error in the time of the event is 365 seconds.
The 1-sigma cross-track error in the shadow position is
3321 km.
The sky-plane scale is
28323.4 km/arcsec.
The TNO has an absolute magnitude Hv=8.9
Diameter=100.0 km assuming a 5% albedo -- 4.5 sec chord
Diameter=40.8 km assuming a 30% albedo -- 1.8 sec chord
Dynamical classification is SCATNEAR
Star training set for 516977, (2019/08/01 08:33UT) Object RA Dec mag sep mel Antares 16:30:36.7 -26:28:26 0.9 38.62 118 Nunki 18:56:28.7 -26:16:15 2.0 8.26 150 43 Sgr 19:18:46.7 -18:55:00 4.9 0.76 156 PPM 235722 19:16:35.4 -19:45:06 8.1 0.39 155 PPM 235724 19:16:40.1 -19:19:55 9.4 0.12 155 516977 19:16:12.4 -19:22:19 16.5 155 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
2.5 sigma about the mid-time.
The median site spacing is 17.7 km
RECON observability=0.7 and success probability=0.4%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kelowna | 08:31:09 | -21.8 | Dark | Down | 16.0 | 208.7 | Really Low | 08:16:09 - 08:46:09 | 12199 |
| Summerland | 08:31:08 | -22.1 | Dark | Down | 16.4 | 208.5 | Really Low | 08:16:08 - 08:46:08 | 12191 |
| Penticton | 08:31:07 | -22.2 | Dark | Down | 16.4 | 208.6 | Really Low | 08:16:07 - 08:46:07 | 12185 |
| Okanagan Falls | 08:31:09 | -22.3 | Dark | Down | 16.5 | 208.6 | Really Low | 08:16:09 - 08:46:09 | 12176 |
| Oliver | 08:31:08 | -22.5 | Dark | Down | 16.7 | 208.6 | Really Low | 08:16:08 - 08:46:08 | 12168 |
| Anarchist Mountain Observatory | 08:31:07 | -22.7 | Dark | Down | 16.8 | 208.8 | Really Low | 08:16:07 - 08:46:07 | 12156 |
| Oroville | 08:31:06 | -22.7 | Dark | Down | 16.9 | 208.8 | Really Low | 08:16:06 - 08:46:06 | 12153 |
| Tonasket | 08:31:07 | -23.0 | Dark | Down | 17.1 | 208.8 | Really Low | 08:16:07 - 08:46:07 | 12142 |
| Okanogan | 08:31:06 | -23.3 | Dark | Down | 17.4 | 208.7 | Really Low | 08:16:06 - 08:46:06 | 12128 |
| Brewster | 08:31:07 | -23.6 | Dark | Down | 17.7 | 208.6 | Really Low | 08:16:07 - 08:46:07 | 12118 |
| Manson/Chelan | 08:31:08 | -23.8 | Dark | Down | 18.0 | 208.3 | Really Low | 08:16:08 - 08:46:08 | 12115 |
| Entiat | 08:31:07 | -24.1 | Dark | Down | 18.2 | 208.2 | Really Low | 08:16:07 - 08:46:07 | 12105 |
| Wenatchee | 08:31:08 | -24.3 | Dark | Down | 18.5 | 208.2 | Really Low | 08:16:08 - 08:46:08 | 12094 |
| Ellensburg | 08:31:08 | -24.8 | Dark | Down | 18.9 | 208.0 | Really Low | 08:16:08 - 08:46:08 | 12077 |
| Yakima | 08:31:08 | -25.2 | Dark | Down | 19.3 | 208.1 | Really Low | 08:16:08 - 08:46:08 | 12056 |
| Toppenish/White Swan | 08:31:07 | -25.4 | Dark | Down | 19.4 | 208.3 | Really Low | 08:16:07 - 08:46:07 | 12041 |
| Goldendale | 08:31:07 | -25.9 | Dark | Down | 20.0 | 208.0 | Low | 08:16:07 - 08:46:07 | 12020 |
| The Dalles | 08:31:08 | -26.2 | Dark | Down | 20.4 | 207.7 | Low | 08:16:08 - 08:46:08 | 12016 |
| Pasco | 08:31:03 | -25.4 | Dark | Down | 19.1 | 209.5 | Really Low | 08:16:03 - 08:46:03 | 12008 |
| George/Umatilla | 08:31:02 | -25.7 | Dark | Down | 19.5 | 209.3 | Really Low | 08:16:02 - 08:46:02 | 11994 |
| Maupin | 08:31:07 | -26.6 | Dark | Down | 20.7 | 207.8 | Low | 08:16:07 - 08:46:07 | 11991 |
| PNWRO | 08:31:01 | -25.6 | Dark | Down | 19.2 | 209.7 | Really Low | 08:16:01 - 08:46:01 | 11990 |
| Madras/Culver | 08:31:05 | -27.2 | Dark | Down | 21.2 | 207.9 | Low | 08:16:05 - 08:46:05 | 11961 |
| Sisters | 08:31:07 | -27.5 | Dark | Down | 21.6 | 207.5 | Low | 08:16:07 - 08:46:07 | 11952 |
| Redmond | 08:31:06 | -27.5 | Dark | Down | 21.5 | 207.9 | Low | 08:16:06 - 08:46:06 | 11942 |
| Bend | 08:31:06 | -27.7 | Dark | Down | 21.8 | 207.8 | Low | 08:16:06 - 08:46:06 | 11933 |
| Oregon Observatory | 08:31:06 | -27.9 | Dark | Down | 22.0 | 207.7 | Low | 08:16:06 - 08:46:06 | 11926 |
| La Pine/Gilchrist | 08:31:06 | -28.1 | Dark | Down | 22.2 | 207.7 | Low | 08:16:06 - 08:46:06 | 11916 |
| North Lake | 08:31:04 | -28.5 | Dark | Down | 22.4 | 208.4 | Low | 08:16:04 - 08:46:04 | 11878 |
| Chiloquin | 08:31:06 | -29.3 | Dark | Down | 23.3 | 207.6 | Low | 08:16:06 - 08:46:06 | 11859 |
| Paisley | 08:31:03 | -29.0 | Dark | Down | 22.7 | 208.8 | Low | 08:16:03 - 08:46:03 | 11838 |
| Klamath Falls | 08:31:05 | -29.6 | Dark | Down | 23.6 | 207.7 | Low | 08:16:05 - 08:46:05 | 11837 |
| Tulelake | 08:31:05 | -29.8 | Dark | Down | 23.7 | 208.1 | Low | 08:16:05 - 08:46:05 | 11814 |
| Lakeview | 08:31:01 | -29.5 | Dark | Down | 23.1 | 209.1 | Low | 08:16:01 - 08:46:01 | 11803 |
| Cedarville | 08:31:00 | -30.2 | Dark | Down | 23.6 | 209.4 | Low | 08:16:00 - 08:46:00 | 11759 |
| Fall River/Burney | 08:31:03 | -30.7 | Dark | Down | 24.5 | 208.3 | Low | 08:16:03 - 08:46:03 | 11757 |
| Susanville | 08:31:00 | -31.3 | Dark | Down | 24.7 | 209.2 | Low | 08:16:00 - 08:46:00 | 11702 |
| Greenville | 08:31:01 | -31.6 | Dark | Down | 25.1 | 209.0 | Low | 08:16:01 - 08:46:01 | 11691 |
| Gimple | 08:31:00 | -31.6 | Dark | Down | 25.1 | 209.0 | Low | 08:16:00 - 08:46:00 | 11689 |
| Quincy | 08:31:01 | -31.8 | Dark | Down | 25.3 | 209.0 | Low | 08:16:01 - 08:46:01 | 11678 |
| Portola | 08:30:59 | -31.9 | Dark | Down | 25.2 | 209.5 | Low | 08:15:59 - 08:45:59 | 11659 |
| Reno | 08:30:56 | -32.1 | Dark | Down | 25.2 | 210.2 | Low | 08:15:56 - 08:45:56 | 11627 |
| Carson City | 08:30:56 | -32.5 | Dark | Down | 25.5 | 210.3 | Low | 08:15:56 - 08:45:56 | 11603 |
| Gardnerville | 08:30:55 | -32.7 | Dark | Down | 25.7 | 210.4 | Low | 08:15:55 - 08:45:55 | 11587 |
| Yerington | 08:30:53 | -32.6 | Dark | Down | 25.4 | 210.9 | Low | 08:15:53 - 08:45:53 | 11576 |
| Hawthorne | 08:30:52 | -33.0 | Dark | Down | 25.6 | 211.5 | Low | 08:15:52 - 08:45:52 | 11533 |
| Lee Vining | 08:30:52 | -33.6 | Dark | Down | 26.3 | 211.2 | Low | 08:15:52 - 08:45:52 | 11507 |
| Tonopah | 08:30:46 | -33.3 | Dark | Down | 25.4 | 212.9 | Low | 08:15:46 - 08:45:46 | 11467 |
| Bishop | 08:30:49 | -34.1 | Dark | Down | 26.5 | 212.0 | Low | 08:15:49 - 08:45:49 | 11449 |
| Lone Pine | 08:30:47 | -34.8 | Dark | Down | 27.0 | 212.5 | Low | 08:15:47 - 08:45:47 | 11389 |
| Beatty | 08:30:44 | -34.3 | Dark | Down | 26.2 | 213.7 | Low | 08:15:44 - 08:45:44 | 11377 |
| CPSLO | 08:30:55 | -36.4 | Dark | Down | 29.2 | 210.4 | Low | 08:15:55 - 08:45:55 | 11363 |
| Indian Springs | 08:30:40 | -34.5 | Dark | Down | 26.0 | 214.7 | Low | 08:15:40 - 08:45:40 | 11326 |
| Niwot | 08:30:14 | -28.7 | Dark | Down | 18.1 | 222.9 | Really Low | 08:15:14 - 08:45:14 | 11291 |
| SwRI | 08:30:13 | -28.8 | Dark | Down | 18.2 | 222.8 | Really Low | 08:15:13 - 08:45:13 | 11286 |
| Henderson | 08:30:36 | -34.9 | Dark | Down | 26.1 | 215.5 | Low | 08:15:36 - 08:45:36 | 11271 |
| Searchlight/Boulder City | 08:30:36 | -35.5 | Dark | Down | 26.5 | 215.7 | Low | 08:15:36 - 08:45:36 | 11228 |
| Wildwood | 08:30:47 | -37.4 | Dark | Down | 29.4 | 212.8 | Low | 08:15:47 - 08:45:47 | 11226 |
| Laughlin/Bullhead City | 08:30:35 | -35.7 | Dark | Down | 26.6 | 216.1 | Low | 08:15:35 - 08:45:35 | 11198 |
| Patrick | 08:30:31 | -35.3 | Dark | Down | 26.1 | 216.7 | Low | 08:15:31 - 08:45:31 | 11197 |
| Kingman/Dolan Springs | 08:30:33 | -35.6 | Dark | Down | 26.4 | 216.6 | Low | 08:15:33 - 08:45:33 | 11186 |
| Mohave Valley | 08:30:34 | -35.9 | Dark | Down | 26.8 | 216.2 | Low | 08:15:34 - 08:45:34 | 11178 |
| DCO | 08:30:30 | -35.5 | Dark | Down | 26.0 | 217.4 | Low | 08:15:30 - 08:45:30 | 11155 |
| Idyllwild | 08:30:40 | -37.5 | Dark | Down | 28.8 | 214.6 | Low | 08:15:40 - 08:45:40 | 11150 |
| Lake Havasu City | 08:30:33 | -36.3 | Dark | Down | 27.0 | 216.6 | Low | 08:15:33 - 08:45:33 | 11142 |
| Parker | 08:30:32 | -36.6 | Dark | Down | 27.3 | 216.7 | Low | 08:15:32 - 08:45:32 | 11116 |
| Blythe | 08:30:33 | -37.2 | Dark | Down | 27.9 | 216.6 | Low | 08:15:33 - 08:45:33 | 11085 |
| Calipatria | 08:30:35 | -37.8 | Dark | Down | 28.7 | 215.9 | Low | 08:15:35 - 08:45:35 | 11074 |
| Yuma | 08:30:32 | -38.1 | Dark | Down | 28.6 | 216.8 | Low | 08:15:32 - 08:45:32 | 11017 |
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 516977, (2019/08/01 08:33UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 38.62 118 Nunki 18:55:15.9 -26:17:49 2.0 8.26 150 43 Sgr 19:17:38.1 -18:57:11 4.9 0.76 156 PPM 235722 19:15:26.3 -19:47:14 8.1 0.39 155 PPM 235724 19:15:31.2 -19:22:03 9.4 0.12 155 516977 19:15:03.4 -19:24:26 16.5 155 Positions are for J2000
Event circumstances last updated at 2019/06/07 22:29:53 UT
Marc W. Buie, Southwest Research Institute