Event between 15KH173 and star GA0740:06192179 with event index number of 1012163
Geocentric closest approach at 2020/02/04 11:45:43 UTC
J2000 position of star is 16:38:31.2 -14:12:19
Equinox of date position of star is 16:39:35.4 -14:14:30
Stellar brightness G=15.3,
use SENSEUP=128
Star is 174 degrees from the moon.
Moon is 73% illuminated.
TNO apparent brightness V=25.0
[RECON map]
TNO is 30.2 AU from the Sun
and 30.6 AU from the Earth.
The TNO is moving 19.5
km/sec on the sky relative to the star, or,
3.2 arcsec/hr.
The 1-sigma error in the time of the event is 1195 seconds.
The 1-sigma cross-track error in the shadow position is
5116 km.
The sky-plane scale is
22173.9 km/arcsec.
The TNO has an absolute magnitude Hv=10.0
Diameter=59.2 km assuming a 5% albedo -- 3.0 sec chord
Diameter=24.2 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is 3:2E
Star training set for 15KH173, (2020/02/04 11:46UT) Object RA Dec mag sep mel Antares 16:30:38.6 -26:28:30 0.9 12.41 173 13Zet Oph 16:38:16.0 -10:36:23 2.6 3.65 170 PPM 232182 16:49:35.6 -14:56:37 6.2 2.50 175 PPM 231910 16:37:53.1 -13:45:37 8.1 0.65 173 PPM 231960 16:39:53.9 -14:08:02 9.1 0.12 174 15KH173 16:39:39.4 -14:14:38 15.3 174 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
0.8 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) |
| Kelowna | 11:43:03 | -36.0 | Dark | Down | 7.6 | 122.9 | Really Low | 11:28:03 - 11:58:03 | 12044 |
| Summerland | 11:43:02 | -36.2 | Dark | Down | 7.4 | 122.6 | Really Low | 11:28:02 - 11:58:02 | 12037 |
| Penticton | 11:43:01 | -36.2 | Dark | Down | 7.7 | 122.7 | Really Low | 11:28:01 - 11:58:01 | 12022 |
| Okanagan Falls | 11:43:00 | -36.3 | Dark | Down | 7.8 | 122.7 | Really Low | 11:28:00 - 11:58:00 | 12012 |
| Oliver | 11:42:59 | -36.3 | Dark | Down | 7.9 | 122.7 | Really Low | 11:27:59 - 11:57:59 | 12004 |
| Anarchist Mountain Observatory | 11:42:58 | -36.3 | Dark | Down | 8.1 | 122.8 | Really Low | 11:27:58 - 11:57:58 | 11997 |
| Oroville | 11:42:58 | -36.3 | Dark | Down | 8.1 | 122.7 | Really Low | 11:27:58 - 11:57:58 | 11992 |
| Tonasket | 11:42:57 | -36.4 | Dark | Down | 8.2 | 122.7 | Really Low | 11:27:57 - 11:57:57 | 11979 |
| Okanogan | 11:42:56 | -36.6 | Dark | Down | 8.3 | 122.5 | Really Low | 11:27:56 - 11:57:56 | 11959 |
| Brewster | 11:42:52 | -36.8 | Dark | Down | 8.3 | 122.3 | Really Low | 11:27:52 - 11:57:52 | 11941 |
| Manson/Chelan | 11:42:53 | -37.1 | Dark | Down | 8.2 | 122.0 | Really Low | 11:27:53 - 11:57:53 | 11924 |
| Entiat | 11:42:51 | -37.2 | Dark | Down | 8.3 | 121.9 | Really Low | 11:27:51 - 11:57:51 | 11911 |
| Wenatchee | 11:42:49 | -37.4 | Dark | Down | 8.4 | 121.8 | Really Low | 11:27:49 - 11:57:49 | 11895 |
| Ellensburg | 11:42:49 | -37.7 | Dark | Down | 8.5 | 121.6 | Really Low | 11:27:49 - 11:57:49 | 11869 |
| Yakima | 11:42:47 | -37.8 | Dark | Down | 8.7 | 121.5 | Really Low | 11:27:47 - 11:57:47 | 11845 |
| Pasco | 11:42:48 | -36.9 | Dark | Down | 9.7 | 122.6 | Really Low | 11:27:48 - 11:57:48 | 11844 |
| Toppenish/White Swan | 11:42:46 | -37.8 | Dark | Down | 8.9 | 121.6 | Really Low | 11:27:46 - 11:57:46 | 11834 |
| PNWRO | 11:42:48 | -36.9 | Dark | Down | 10.0 | 122.7 | Really Low | 11:27:48 - 11:57:48 | 11832 |
| George/Umatilla | 11:42:47 | -37.2 | Dark | Down | 9.8 | 122.4 | Really Low | 11:27:47 - 11:57:47 | 11821 |
| Goldendale | 11:42:44 | -38.2 | Dark | Down | 8.9 | 121.2 | Really Low | 11:27:44 - 11:57:44 | 11796 |
| The Dalles | 11:42:42 | -38.5 | Dark | Down | 8.8 | 120.9 | Really Low | 11:27:42 - 11:57:42 | 11777 |
| Maupin | 11:42:40 | -38.6 | Dark | Down | 9.1 | 120.9 | Really Low | 11:27:40 - 11:57:40 | 11753 |
| Madras/Culver | 11:42:38 | -38.8 | Dark | Down | 9.3 | 120.8 | Really Low | 11:27:38 - 11:57:38 | 11719 |
| Redmond | 11:42:36 | -38.9 | Dark | Down | 9.5 | 120.7 | Really Low | 11:27:36 - 11:57:36 | 11696 |
| Sisters | 11:42:35 | -39.2 | Dark | Down | 9.2 | 120.4 | Really Low | 11:27:35 - 11:57:35 | 11692 |
| Bend | 11:42:35 | -39.1 | Dark | Down | 9.5 | 120.5 | Really Low | 11:27:35 - 11:57:35 | 11681 |
| Oregon Observatory | 11:42:34 | -39.2 | Dark | Down | 9.5 | 120.4 | Really Low | 11:27:34 - 11:57:34 | 11668 |
| La Pine/Gilchrist | 11:42:33 | -39.3 | Dark | Down | 9.6 | 120.3 | Really Low | 11:27:33 - 11:57:33 | 11654 |
| North Lake | 11:42:32 | -39.0 | Dark | Down | 10.2 | 120.7 | Really Low | 11:27:32 - 11:57:32 | 11635 |
| Niwot | 11:43:05 | -27.8 | Dark | Down | 21.5 | 132.6 | Low | 11:28:05 - 11:58:05 | 11626 |
| Paisley | 11:42:32 | -38.9 | Dark | Down | 10.7 | 120.9 | Really Low | 11:27:32 - 11:57:32 | 11605 |
| Chiloquin | 11:42:28 | -39.9 | Dark | Down | 9.9 | 119.9 | Really Low | 11:27:28 - 11:57:28 | 11578 |
| Lakeview | 11:42:30 | -38.9 | Dark | Down | 11.1 | 121.0 | Really Low | 11:27:30 - 11:57:30 | 11575 |
| Klamath Falls | 11:42:27 | -39.9 | Dark | Down | 10.1 | 119.9 | Really Low | 11:27:27 - 11:57:27 | 11556 |
| Tulelake | 11:42:26 | -39.8 | Dark | Down | 10.4 | 120.1 | Really Low | 11:27:26 - 11:57:26 | 11543 |
| Cedarville | 11:42:28 | -38.9 | Dark | Down | 11.5 | 121.0 | Really Low | 11:27:28 - 11:57:28 | 11534 |
| Fall River/Burney | 11:42:24 | -40.0 | Dark | Down | 10.9 | 120.0 | Really Low | 11:27:24 - 11:57:24 | 11484 |
| Susanville | 11:42:23 | -39.6 | Dark | Down | 11.7 | 120.4 | Really Low | 11:27:23 - 11:57:23 | 11452 |
| Gimple | 11:42:22 | -39.8 | Dark | Down | 11.7 | 120.2 | Really Low | 11:27:22 - 11:57:22 | 11430 |
| Greenville | 11:42:20 | -39.9 | Dark | Down | 11.7 | 120.1 | Really Low | 11:27:20 - 11:57:20 | 11429 |
| Quincy | 11:42:21 | -39.9 | Dark | Down | 11.8 | 120.1 | Really Low | 11:27:21 - 11:57:21 | 11415 |
| Portola | 11:42:21 | -39.6 | Dark | Down | 12.2 | 120.4 | Really Low | 11:27:21 - 11:57:21 | 11413 |
| Reno | 11:42:22 | -39.1 | Dark | Down | 12.7 | 120.9 | Really Low | 11:27:22 - 11:57:22 | 11405 |
| Carson City | 11:42:21 | -39.2 | Dark | Down | 12.9 | 120.8 | Really Low | 11:27:21 - 11:57:21 | 11380 |
| Yerington | 11:42:21 | -38.7 | Dark | Down | 13.5 | 121.2 | Really Low | 11:27:21 - 11:57:21 | 11376 |
| Gardnerville | 11:42:20 | -39.2 | Dark | Down | 13.1 | 120.8 | Really Low | 11:27:20 - 11:57:20 | 11364 |
| Hawthorne | 11:42:22 | -38.4 | Dark | Down | 14.1 | 121.5 | Really Low | 11:27:22 - 11:57:22 | 11351 |
| Tonopah | 11:42:23 | -37.4 | Dark | Down | 15.2 | 122.4 | Really Low | 11:27:23 - 11:57:23 | 11339 |
| Lee Vining | 11:42:18 | -38.9 | Dark | Down | 14.0 | 121.0 | Really Low | 11:27:18 - 11:57:18 | 11304 |
| Bishop | 11:42:19 | -38.4 | Dark | Down | 14.8 | 121.4 | Really Low | 11:27:19 - 11:57:19 | 11272 |
| Beatty | 11:42:20 | -37.2 | Dark | Down | 16.2 | 122.5 | Really Low | 11:27:20 - 11:57:20 | 11263 |
| Indian Springs | 11:42:22 | -36.4 | Dark | Down | 17.1 | 123.2 | Really Low | 11:27:22 - 11:57:22 | 11254 |
| Henderson | 11:42:22 | -35.9 | Dark | Down | 17.8 | 123.6 | Really Low | 11:27:22 - 11:57:22 | 11225 |
| Lone Pine | 11:42:16 | -38.3 | Dark | Down | 15.4 | 121.5 | Really Low | 11:27:16 - 11:57:16 | 11222 |
| Patrick | 11:42:24 | -35.0 | Dark | Down | 18.9 | 124.2 | Really Low | 11:27:24 - 11:57:24 | 11194 |
| Searchlight/Boulder City | 11:42:20 | -35.9 | Dark | Down | 18.2 | 123.5 | Really Low | 11:27:20 - 11:57:20 | 11184 |
| DCO | 11:42:25 | -34.5 | Dark | Down | 19.6 | 124.7 | Really Low | 11:27:25 - 11:57:25 | 11182 |
| Kingman/Dolan Springs | 11:42:24 | -35.2 | Dark | Down | 18.9 | 124.0 | Really Low | 11:27:24 - 11:57:24 | 11175 |
| Laughlin/Bullhead City | 11:42:21 | -35.6 | Dark | Down | 18.6 | 123.6 | Really Low | 11:27:21 - 11:57:21 | 11167 |
| Mohave Valley | 11:42:20 | -35.7 | Dark | Down | 18.7 | 123.5 | Really Low | 11:27:20 - 11:57:20 | 11146 |
| Lake Havasu City | 11:42:19 | -35.5 | Dark | Down | 19.1 | 123.6 | Really Low | 11:27:19 - 11:57:19 | 11120 |
| Parker | 11:42:19 | -35.5 | Dark | Down | 19.3 | 123.5 | Really Low | 11:27:19 - 11:57:19 | 11093 |
| CPSLO | 11:42:06 | -40.6 | Dark | Down | 14.2 | 119.3 | Really Low | 11:27:06 - 11:57:06 | 11085 |
| Blythe | 11:42:16 | -35.8 | Dark | Down | 19.4 | 123.2 | Really Low | 11:27:16 - 11:57:16 | 11049 |
| Idyllwild | 11:42:10 | -37.5 | Dark | Down | 17.8 | 121.7 | Really Low | 11:27:10 - 11:57:10 | 11027 |
| Wildwood | 11:42:07 | -39.1 | Dark | Down | 16.3 | 120.5 | Really Low | 11:27:07 - 11:57:07 | 11026 |
| Calipatria | 11:42:12 | -36.6 | Dark | Down | 19.0 | 122.3 | Really Low | 11:27:12 - 11:57:12 | 10998 |
| Yuma | 11:42:14 | -35.9 | Dark | Down | 19.9 | 122.8 | Really Low | 11:27:14 - 11:57:14 | 10977 |
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 15KH173, (2020/02/04 11:46UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 12.41 173 13Zet Oph 16:37:09.6 -10:34:01 2.6 3.65 170 PPM 232182 16:48:27.0 -14:54:34 6.2 2.50 175 PPM 231910 16:36:45.1 -13:43:15 8.1 0.65 173 PPM 231960 16:38:45.8 -14:05:43 9.1 0.12 174 15KH173 16:38:31.2 -14:12:19 15.3 174 Positions are for J2000
Event circumstances last updated at 2018/12/02 21:47:10 UT
Marc W. Buie, Southwest Research Institute