Event between (469707) 05GB187 and star GA0760:07430834 with event index number of 1684268
Geocentric closest approach at 2027/04/28 08:39:56 UTC
J2000 position of star is 17:27:11.1 -12:44:34
Equinox of date position of star is 17:28:28.3 -12:45:38
Stellar brightness G=12.9,
use SENSEUP=32 with the MallinCam and and exposure
time of 500 milli-seconds with the QHY174 camera.
Star is 42 degrees from the moon.
Moon is 55% illuminated.
TNO apparent brightness V=22.5
[RECON map]
TNO is 32.8 AU from the Sun
and 32.1 AU from the Earth.
The TNO is moving 16.1
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 191 seconds.
The 1-sigma cross-track error in the shadow position is
2016 km.
The sky-plane scale is
23290.0 km/arcsec.
The TNO has an absolute magnitude Hv=7.2
Diameter=214.8 km assuming a 5% albedo -- 13.3 sec chord
Diameter=87.7 km assuming a 30% albedo -- 5.4 sec chord
Dynamical classification is 3:2E
Star training set for 469707, (2027/04/28 08:39UT) Object RA Dec mag sep mel Antares 16:31:05.2 -26:29:25 0.9 19.27 53 35Eta Oph 17:11:56.8 -15:45:24 2.6 5.05 45 53Nu Ser 17:22:21.9 -12:52:20 4.0 1.55 44 PPM 233084 17:28:34.2 -12:32:03 6.6 0.23 42 PPM 233089 17:28:43.4 -12:43:21 9.8 0.04 42 469707 17:28:43.3 -12:45:50 12.9 42 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
4.7 sigma about the mid-time.
The median site spacing is 14.5 km
RECON observability=1.0 and success probability=23.0%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 08:43:22 | -20.2 | Dark | Down | 22.7 | 158.0 | Low | 08:28:22 - 08:58:22 | 302 |
| Kamloops | 08:44:13 | -24.4 | Dark | Down | 19.6 | 143.6 | Really Low | 08:29:13 - 08:59:13 | -188 |
| Kelowna | 08:44:11 | -25.1 | Dark | Down | 20.6 | 144.2 | Low | 08:29:11 - 08:59:11 | -217 |
| Peachland | 08:44:12 | -25.3 | Dark | Down | 20.6 | 143.9 | Low | 08:29:12 - 08:59:12 | -233 |
| Summerland | 08:44:12 | -25.4 | Dark | Down | 20.7 | 144.0 | Low | 08:29:12 - 08:59:12 | -240 |
| Penticton | 08:44:12 | -25.4 | Dark | Down | 20.8 | 144.1 | Low | 08:29:12 - 08:59:12 | -242 |
| Oliver | 08:44:13 | -25.8 | Dark | Down | 21.1 | 144.0 | Low | 08:29:13 - 08:59:13 | -266 |
| Anarchist Mountain Observatory | 08:44:12 | -25.9 | Dark | Down | 21.3 | 144.2 | Low | 08:29:12 - 08:59:12 | -271 |
| Okanogan | 08:44:14 | -26.6 | Dark | Down | 21.8 | 143.8 | Low | 08:29:14 - 08:59:14 | -323 |
| Brewster | 08:44:15 | -26.9 | Dark | Down | 21.9 | 143.5 | Low | 08:29:15 - 08:59:15 | -348 |
| Manson/Chelan | 08:44:17 | -27.1 | Dark | Down | 21.9 | 143.1 | Low | 08:29:17 - 08:59:17 | -374 |
| Wenatchee | 08:44:18 | -27.6 | Dark | Down | 22.3 | 142.9 | Low | 08:29:18 - 08:59:18 | -412 |
| Victoria | 08:44:26 | -26.9 | Dark | Down | 20.1 | 140.2 | Low | 08:29:26 - 08:59:26 | -425 |
| Dunrhomin | 08:43:24 | -30.4 | Dark | Up | 33.8 | 156.3 | Up | 08:28:24 - 08:58:24 | -439 |
| Ellensburg | 08:44:19 | -28.1 | Dark | Down | 22.5 | 142.6 | Low | 08:29:19 - 08:59:19 | -449 |
| CU-SBO | 08:43:25 | -30.6 | Dark | Up | 34.0 | 156.1 | Up | 08:28:25 - 08:58:25 | -460 |
| PNWRO | 08:44:15 | -28.8 | Dark | Down | 24.0 | 143.9 | Low | 08:29:15 - 08:59:15 | -470 |
| Yakima | 08:44:20 | -28.5 | Dark | Down | 22.8 | 142.4 | Low | 08:29:20 - 08:59:20 | -479 |
| Toppenish/White Swan | 08:44:20 | -28.6 | Dark | Down | 23.1 | 142.5 | Low | 08:29:20 - 08:59:20 | -489 |
| The Dalles | 08:44:23 | -29.5 | Dark | Down | 23.3 | 141.6 | Low | 08:29:23 - 08:59:23 | -571 |
| Maupin | 08:44:24 | -29.9 | Dark | Down | 23.7 | 141.6 | Low | 08:29:24 - 08:59:24 | -598 |
| Sisters | 08:44:27 | -30.8 | Dark | Down | 24.2 | 140.9 | Low | 08:29:27 - 08:59:27 | -680 |
| Bend | 08:44:26 | -31.0 | Dark | Down | 24.5 | 141.1 | Low | 08:29:26 - 08:59:26 | -689 |
| Oregon Observatory | 08:44:27 | -31.2 | Dark | Down | 24.6 | 140.9 | Low | 08:29:27 - 08:59:27 | -707 |
| Chiloquin | 08:44:29 | -32.6 | Dark | Down | 25.4 | 140.1 | Low | 08:29:29 - 08:59:29 | -822 |
| Klamath Falls | 08:44:30 | -32.9 | Dark | Down | 25.7 | 140.1 | Low | 08:29:30 - 08:59:30 | -846 |
| Cedarville | 08:44:25 | -33.3 | Dark | Down | 27.0 | 141.4 | Low | 08:29:25 - 08:59:25 | -847 |
| Fall River/Burney | 08:44:30 | -34.0 | Dark | Down | 26.8 | 140.1 | Low | 08:29:30 - 08:59:30 | -926 |
| Gimple | 08:44:29 | -34.8 | Dark | Down | 27.7 | 140.3 | Low | 08:29:29 - 08:59:29 | -981 |
| Greenville | 08:44:29 | -34.8 | Dark | Down | 27.7 | 140.2 | Low | 08:29:29 - 08:59:29 | -983 |
| Reno | 08:44:25 | -35.2 | Dark | Down | 28.7 | 141.1 | Low | 08:29:25 - 08:59:25 | -992 |
| Portola | 08:44:28 | -35.1 | Dark | Down | 28.2 | 140.5 | Low | 08:29:28 - 08:59:28 | -993 |
| Quincy | 08:44:29 | -35.0 | Dark | Down | 27.8 | 140.1 | Low | 08:29:29 - 08:59:29 | -999 |
| Yerington | 08:44:23 | -35.6 | Dark | Down | 29.4 | 141.5 | Low | 08:29:23 - 08:59:23 | -1014 |
| Carson City | 08:44:26 | -35.5 | Dark | Down | 29.0 | 141.0 | Low | 08:29:26 - 08:59:26 | -1020 |
| Hawthorne | 08:44:21 | -35.9 | Dark | Down | 30.1 | 141.9 | Up | 08:29:21 - 08:59:21 | -1033 |
| Gardnerville | 08:44:26 | -35.8 | Dark | Down | 29.2 | 140.9 | Low | 08:29:26 - 08:59:26 | -1038 |
| Lee Vining | 08:44:24 | -36.6 | Dark | Down | 30.3 | 141.2 | Up | 08:29:24 - 08:59:24 | -1096 |
| Beatty | 08:44:15 | -37.1 | Dark | Down | 32.2 | 143.1 | Up | 08:29:15 - 08:59:15 | -1099 |
| Patrick | 08:44:03 | -37.7 | Dark | Up | 34.8 | 145.4 | Up | 08:29:03 - 08:59:03 | -1117 |
| Bishop | 08:44:21 | -37.0 | Dark | Down | 31.1 | 141.7 | Up | 08:29:21 - 08:59:21 | -1119 |
| Laughlin/Bullhead City | 08:44:06 | -38.1 | Dark | Up | 34.7 | 144.6 | Up | 08:29:06 - 08:59:06 | -1163 |
| George/Scottsdale | 08:43:54 | -38.6 | Dark | Up | 37.1 | 146.8 | Up | 08:28:54 - 08:58:54 | -1183 |
| Lake Havasu City | 08:44:05 | -38.7 | Dark | Up | 35.3 | 144.6 | Up | 08:29:05 - 08:59:05 | -1209 |
| Idyllwild | 08:44:16 | -40.1 | Dark | Up | 34.8 | 141.9 | Up | 08:29:16 - 08:59:16 | -1361 |
| Calipatria | 08:44:11 | -40.3 | Dark | Up | 35.8 | 142.8 | Up | 08:29:11 - 08:59:11 | -1369 |
| Yuma | 08:44:06 | -40.4 | Dark | Up | 36.6 | 143.5 | Up | 08:29:06 - 08:59:06 | -1372 |
| Wildwood | 08:44:24 | -40.2 | Dark | Down | 33.5 | 140.2 | Up | 08:29:24 - 08:59:24 | -1400 |
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 469707, (2027/04/28 08:39UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 19.27 53 35Eta Oph 17:10:22.7 -15:43:29 2.6 5.05 45 53Nu Ser 17:20:49.7 -12:50:49 4.0 1.55 44 PPM 233084 17:27:02.2 -12:30:46 6.6 0.23 42 PPM 233089 17:27:11.3 -12:42:05 9.8 0.04 42 469707 17:27:11.1 -12:44:34 12.9 42 Positions are for J2000
Event circumstances last updated at 2022/11/20 02:47:10 UT
Marc W. Buie, Southwest Research Institute