Event between (612574) 03QB91 and star GA0940:00163804 with event index number of 2815429
Geocentric closest approach at 2027/10/28 05:51:41 UTC
J2000 position of star is 01:42:55.5 +04:01:54
Equinox of date position of star is 01:44:05.2 +04:08:38
Stellar brightness G=13.6,
use SENSEUP=64 with the MallinCam and and exposure
time of 1 seconds with the QHY174 camera.
Star is 167 degrees from the moon.
Moon is 2% illuminated.
TNO apparent brightness V=23.5
[RECON map]
TNO is 46.6 AU from the Sun
and 45.6 AU from the Earth.
The TNO is moving 25.6
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 426 seconds.
The 1-sigma cross-track error in the shadow position is
4951 km.
The sky-plane scale is
33108.3 km/arcsec.
The TNO has an absolute magnitude Hv=6.8
Diameter=269.2 km assuming a 5% albedo -- 10.5 sec chord
Diameter=109.9 km assuming a 30% albedo -- 4.3 sec chord
Dynamical classification is 3:2E
Star training set for 612574, (2027/10/28 05:52UT) Object RA Dec mag sep mel Aldebaran 04:37:31.2 +16:33:47 0.8 44.23 127 68Omi Cet 02:20:45.3 -02:51:09 2.0 11.49 155 106Nu Psc 01:42:53.0 +05:37:38 4.4 1.50 168 PPM 144956 01:47:10.5 +03:48:22 7.1 0.79 166 PPM 144900 01:43:39.0 +04:34:11 9.2 0.44 167 PPM 144916 01:44:48.9 +04:10:06 10.8 0.11 166 612574 01:44:22.2 +04:10:16 13.6 166 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
2.1 sigma about the mid-time.
The median site spacing is 21.4 km
RECON observability=1.0 and success probability=8.5%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kamloops | 05:51:35 | -45.9 | Dark | Down | 39.9 | 151.1 | Up | 05:36:35 - 06:06:35 | 650 |
| Victoria | 05:51:47 | -46.0 | Dark | Down | 40.7 | 146.4 | Up | 05:36:47 - 06:06:47 | 593 |
| Peachland | 05:51:35 | -46.8 | Dark | Down | 40.9 | 151.4 | Up | 05:36:35 - 06:06:35 | 579 |
| Kelowna | 05:51:34 | -46.8 | Dark | Down | 40.9 | 151.9 | Up | 05:36:34 - 06:06:34 | 578 |
| Summerland | 05:51:35 | -47.0 | Dark | Down | 41.0 | 151.5 | Up | 05:36:35 - 06:06:35 | 567 |
| Penticton | 05:51:35 | -47.1 | Dark | Down | 41.1 | 151.6 | Up | 05:36:35 - 06:06:35 | 560 |
| Oliver | 05:51:36 | -47.3 | Dark | Down | 41.4 | 151.5 | Up | 05:36:36 - 06:06:36 | 538 |
| Anarchist Mountain Observatory | 05:51:36 | -47.5 | Dark | Down | 41.7 | 151.6 | Up | 05:36:36 - 06:06:36 | 523 |
| Tonasket | 05:51:37 | -47.7 | Dark | Down | 41.9 | 151.4 | Up | 05:36:37 - 06:06:37 | 505 |
| Okanogan | 05:51:38 | -47.9 | Dark | Down | 42.1 | 151.1 | Up | 05:36:38 - 06:06:38 | 487 |
| Brewster | 05:51:39 | -48.0 | Dark | Down | 42.3 | 150.7 | Up | 05:36:39 - 06:06:39 | 475 |
| Manson/Chelan | 05:51:40 | -48.0 | Dark | Down | 42.4 | 150.2 | Up | 05:36:40 - 06:06:40 | 471 |
| Wenatchee | 05:51:42 | -48.3 | Dark | Down | 42.7 | 149.7 | Up | 05:36:42 - 06:06:42 | 444 |
| Ellensburg | 05:51:43 | -48.5 | Dark | Down | 43.0 | 149.3 | Up | 05:36:43 - 06:06:43 | 423 |
| Yakima | 05:51:44 | -48.8 | Dark | Down | 43.4 | 149.1 | Up | 05:36:44 - 06:06:44 | 396 |
| Sleaford | 05:50:57 | -49.3 | Dark | Down | 41.5 | 169.9 | Up | 05:35:57 - 06:05:57 | 391 |
| Toppenish/White Swan | 05:51:44 | -49.0 | Dark | Down | 43.6 | 149.2 | Up | 05:36:44 - 06:06:44 | 378 |
| Goldendale | 05:51:47 | -49.2 | Dark | Down | 43.9 | 148.4 | Up | 05:36:47 - 06:06:47 | 352 |
| The Dalles | 05:51:48 | -49.1 | Dark | Down | 44.0 | 147.8 | Up | 05:36:48 - 06:06:48 | 346 |
| Maupin | 05:51:49 | -49.5 | Dark | Down | 44.4 | 147.7 | Up | 05:36:49 - 06:06:49 | 315 |
| PNWRO | 05:51:41 | -50.0 | Dark | Down | 44.4 | 150.9 | Up | 05:36:41 - 06:06:41 | 313 |
| Sisters | 05:51:52 | -49.8 | Dark | Down | 44.9 | 146.6 | Up | 05:36:52 - 06:06:52 | 269 |
| Bend | 05:51:52 | -50.1 | Dark | Down | 45.2 | 146.8 | Up | 05:36:52 - 06:06:52 | 245 |
| Oregon Observatory | 05:51:52 | -50.2 | Dark | Down | 45.3 | 146.6 | Up | 05:36:52 - 06:06:52 | 237 |
| North Lake | 05:51:52 | -50.9 | Dark | Down | 46.1 | 146.9 | Up | 05:36:52 - 06:06:52 | 177 |
| Chiloquin | 05:51:57 | -50.8 | Dark | Down | 46.3 | 145.3 | Up | 05:36:57 - 06:06:57 | 156 |
| Klamath Falls | 05:51:57 | -51.1 | Dark | Down | 46.6 | 145.2 | Up | 05:36:57 - 06:06:57 | 129 |
| Lakeview | 05:51:53 | -51.9 | Dark | Down | 47.2 | 147.0 | Up | 05:36:53 - 06:06:53 | 86 |
| Cedarville | 05:51:54 | -52.4 | Dark | Down | 47.8 | 146.9 | Up | 05:36:54 - 06:06:54 | 33 |
| Fall River/Burney | 05:51:59 | -52.1 | Dark | Down | 47.7 | 145.0 | Up | 05:36:59 - 06:06:59 | 33 |
| Susanville | 05:51:58 | -52.9 | Dark | Down | 48.6 | 145.6 | Up | 05:36:58 - 06:06:58 | -35 |
| Greenville | 05:51:59 | -52.9 | Dark | Down | 48.7 | 145.0 | Up | 05:36:59 - 06:06:59 | -47 |
| Gimple | 05:51:59 | -52.9 | Dark | Down | 48.7 | 145.1 | Up | 05:36:59 - 06:06:59 | -50 |
| Quincy | 05:52:00 | -53.0 | Dark | Down | 48.8 | 144.9 | Up | 05:37:00 - 06:07:00 | -63 |
| Portola | 05:51:59 | -53.4 | Dark | Down | 49.1 | 145.4 | Up | 05:36:59 - 06:06:59 | -86 |
| Reno | 05:51:57 | -53.9 | Dark | Down | 49.6 | 146.1 | Up | 05:36:57 - 06:06:57 | -125 |
| Carson City | 05:51:58 | -54.2 | Dark | Down | 49.9 | 145.9 | Up | 05:36:58 - 06:06:58 | -153 |
| Gardnerville | 05:51:58 | -54.4 | Dark | Down | 50.2 | 145.9 | Up | 05:36:58 - 06:06:58 | -173 |
| Yerington | 05:51:57 | -54.7 | Dark | Down | 50.4 | 146.7 | Up | 05:36:57 - 06:06:57 | -187 |
| Hawthorne | 05:51:56 | -55.3 | Dark | Down | 51.0 | 147.1 | Up | 05:36:56 - 06:06:56 | -239 |
| Lee Vining | 05:51:59 | -55.4 | Dark | Down | 51.3 | 146.1 | Up | 05:36:59 - 06:06:59 | -267 |
| Tonopah | 05:51:53 | -56.4 | Dark | Down | 52.0 | 148.9 | Up | 05:36:53 - 06:06:53 | -317 |
| Bishop | 05:51:58 | -56.2 | Dark | Down | 52.1 | 146.7 | Up | 05:36:58 - 06:06:58 | -337 |
| Beatty | 05:51:54 | -57.5 | Dark | Down | 53.1 | 148.8 | Up | 05:36:54 - 06:06:54 | -424 |
| Indian Springs | 05:51:51 | -58.3 | Dark | Down | 53.9 | 150.2 | Up | 05:36:51 - 06:06:51 | -484 |
| Dunrhomin | 05:51:13 | -60.4 | Dark | Down | 53.3 | 168.7 | Up | 05:36:13 - 06:06:13 | -503 |
| CU-SBO | 05:51:13 | -60.6 | Dark | Down | 53.5 | 168.5 | Up | 05:36:13 - 06:06:13 | -521 |
| Henderson | 05:51:50 | -59.1 | Dark | Down | 54.6 | 150.9 | Up | 05:36:50 - 06:06:50 | -549 |
| Wildwood | 05:52:05 | -58.0 | Dark | Down | 54.7 | 143.9 | Up | 05:37:05 - 06:07:05 | -596 |
| Laughlin/Bullhead City | 05:51:50 | -59.9 | Dark | Down | 55.5 | 151.0 | Up | 05:36:50 - 06:06:50 | -634 |
| Patrick | 05:51:48 | -60.2 | Dark | Down | 55.6 | 152.3 | Up | 05:36:48 - 06:06:48 | -636 |
| Kingman/Dolan Springs | 05:51:49 | -60.2 | Dark | Down | 55.7 | 151.8 | Up | 05:36:49 - 06:06:49 | -648 |
| Mohave Valley | 05:51:51 | -60.1 | Dark | Down | 55.8 | 150.8 | Up | 05:36:51 - 06:06:51 | -657 |
| Idyllwild | 05:52:00 | -59.5 | Dark | Down | 55.9 | 146.5 | Up | 05:37:00 - 06:07:00 | -685 |
| Lake Havasu City | 05:51:51 | -60.5 | Dark | Down | 56.2 | 150.9 | Up | 05:36:51 - 06:06:51 | -699 |
| Parker | 05:51:51 | -60.8 | Dark | Down | 56.5 | 150.7 | Up | 05:36:51 - 06:06:51 | -729 |
| Calipatria | 05:51:57 | -60.6 | Dark | Down | 56.9 | 147.9 | Up | 05:36:57 - 06:06:57 | -776 |
| Yuma | 05:51:55 | -61.5 | Dark | Down | 57.7 | 149.0 | Up | 05:36:55 - 06:06:55 | -842 |
| George/Scottsdale | 05:51:44 | -62.5 | Dark | Down | 57.8 | 154.5 | Up | 05:36:44 - 06:06:44 | -843 |
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 612574, (2027/10/28 05:52UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 44.23 127 68Omi Cet 02:19:20.8 -02:58:45 2.0 11.49 155 106Nu Psc 01:41:25.9 +05:29:15 4.4 1.50 168 PPM 144956 01:45:43.9 +03:40:03 7.1 0.79 166 PPM 144900 01:42:12.1 +04:25:49 9.2 0.44 167 PPM 144916 01:43:22.2 +04:01:45 10.8 0.11 166 612574 01:42:55.5 +04:01:54 13.6 167 Positions are for J2000
Event circumstances last updated at 2022/05/16 23:02:31 UT
Marc W. Buie, Southwest Research Institute