Event between 04PW107 and star GA0980:00124228 with event index number of 1549241
Geocentric closest approach at 2026/09/09 08:52:51 UTC
J2000 position of star is 01:25:35.9 +08:46:28
Equinox of date position of star is 01:26:45.4 +08:53:19
Stellar brightness G=14.2,
use SENSEUP=64 with the MallinCam and and exposure
time of 1 seconds with the QHY174 camera.
Star is 121 degrees from the moon.
Moon is 4% illuminated.
TNO apparent brightness V=22.9
[RECON map]
TNO is 38.0 AU from the Sun
and 37.2 AU from the Earth.
The TNO is moving 18.8
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 424 seconds.
The 1-sigma cross-track error in the shadow position is
4515 km.
The sky-plane scale is
26949.8 km/arcsec.
The TNO has an absolute magnitude Hv=7.0
Diameter=238.8 km assuming a 5% albedo -- 12.7 sec chord
Diameter=97.5 km assuming a 30% albedo -- 5.2 sec chord
Dynamical classification is 7:4EEE
Star training set for 04PW107, (2026/09/09 08:53UT) Object RA Dec mag sep mel Aldebaran 04:37:27.3 +16:33:39 0.8 46.96 74 6Bet Ari 01:56:07.2 +20:56:15 2.6 13.92 109 PPM 144653 01:30:26.9 +07:25:52 6.4 1.71 120 PPM 144536 01:24:31.0 +09:19:33 7.7 0.74 121 PPM 144596 01:26:57.3 +09:26:17 10.0 0.53 120 PPM 144593 01:26:50.0 +09:05:46 10.1 0.19 121 04PW107 01:27:00.1 +08:54:45 14.2 120 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 21.7 km
RECON observability=1.0 and success probability=8.1%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kamloops | 08:52:35 | -32.9 | Dark | Down | 44.9 | 151.2 | Up | 08:37:35 - 09:07:35 | 4902 |
| Victoria | 08:52:52 | -35.5 | Dark | Down | 45.7 | 146.1 | Up | 08:37:52 - 09:07:52 | 4851 |
| Peachland | 08:52:35 | -33.7 | Dark | Down | 45.9 | 151.6 | Up | 08:37:35 - 09:07:35 | 4824 |
| Kelowna | 08:52:34 | -33.5 | Dark | Down | 45.9 | 152.0 | Up | 08:37:34 - 09:07:34 | 4823 |
| Summerland | 08:52:36 | -33.8 | Dark | Down | 46.1 | 151.6 | Up | 08:37:36 - 09:07:36 | 4812 |
| Penticton | 08:52:37 | -33.8 | Dark | Down | 46.1 | 151.7 | Up | 08:37:37 - 09:07:37 | 4804 |
| Oliver | 08:52:37 | -34.2 | Dark | Down | 46.5 | 151.6 | Up | 08:37:37 - 09:07:37 | 4780 |
| Anarchist Mountain Observatory | 08:52:37 | -34.3 | Dark | Down | 46.7 | 151.8 | Up | 08:37:37 - 09:07:37 | 4763 |
| Tonasket | 08:52:38 | -34.6 | Dark | Down | 46.9 | 151.5 | Up | 08:37:38 - 09:07:38 | 4744 |
| Okanogan | 08:52:40 | -35.0 | Dark | Down | 47.2 | 151.1 | Up | 08:37:40 - 09:07:40 | 4726 |
| Brewster | 08:52:41 | -35.3 | Dark | Down | 47.3 | 150.7 | Up | 08:37:41 - 09:07:41 | 4713 |
| Manson/Chelan | 08:52:44 | -35.5 | Dark | Down | 47.4 | 150.1 | Up | 08:37:44 - 09:07:44 | 4710 |
| Wenatchee | 08:52:45 | -36.0 | Dark | Down | 47.8 | 149.6 | Up | 08:37:45 - 09:07:45 | 4683 |
| Ellensburg | 08:52:47 | -36.4 | Dark | Down | 48.0 | 149.1 | Up | 08:37:47 - 09:07:47 | 4661 |
| Yakima | 08:52:48 | -36.8 | Dark | Down | 48.4 | 148.9 | Up | 08:37:48 - 09:07:48 | 4633 |
| Toppenish/White Swan | 08:52:49 | -37.0 | Dark | Down | 48.6 | 149.0 | Up | 08:37:49 - 09:07:49 | 4613 |
| Sleaford | 08:51:45 | -28.0 | Dark | Down | 46.4 | 171.4 | Up | 08:36:45 - 09:06:45 | 4595 |
| Goldendale | 08:52:52 | -37.6 | Dark | Down | 49.0 | 148.1 | Up | 08:37:52 - 09:07:52 | 4587 |
| The Dalles | 08:52:54 | -37.9 | Dark | Down | 49.0 | 147.4 | Up | 08:37:54 - 09:07:54 | 4583 |
| Maupin | 08:52:55 | -38.3 | Dark | Down | 49.4 | 147.3 | Up | 08:37:55 - 09:07:55 | 4550 |
| PNWRO | 08:52:44 | -37.0 | Dark | Down | 49.5 | 150.8 | Up | 08:37:44 - 09:07:44 | 4540 |
| Sisters | 08:52:59 | -39.2 | Dark | Down | 50.0 | 146.1 | Up | 08:37:59 - 09:07:59 | 4503 |
| Bend | 08:53:00 | -39.4 | Dark | Down | 50.3 | 146.3 | Up | 08:38:00 - 09:08:00 | 4477 |
| Oregon Observatory | 08:53:00 | -39.6 | Dark | Down | 50.4 | 146.0 | Up | 08:38:00 - 09:08:00 | 4469 |
| North Lake | 08:53:00 | -40.1 | Dark | Down | 51.1 | 146.3 | Up | 08:38:00 - 09:08:00 | 4404 |
| Chiloquin | 08:53:05 | -40.9 | Dark | Down | 51.3 | 144.5 | Up | 08:38:05 - 09:08:05 | 4386 |
| Klamath Falls | 08:53:07 | -41.3 | Dark | Down | 51.6 | 144.4 | Up | 08:38:07 - 09:08:07 | 4357 |
| Lakeview | 08:53:01 | -41.0 | Dark | Down | 52.2 | 146.4 | Up | 08:38:01 - 09:08:01 | 4307 |
| Fall River/Burney | 08:53:09 | -42.3 | Dark | Down | 52.7 | 144.1 | Up | 08:38:09 - 09:08:09 | 4255 |
| Cedarville | 08:53:02 | -41.6 | Dark | Down | 52.8 | 146.2 | Up | 08:38:02 - 09:08:02 | 4251 |
| Susanville | 08:53:08 | -42.7 | Dark | Down | 53.6 | 144.7 | Up | 08:38:08 - 09:08:08 | 4182 |
| Greenville | 08:53:10 | -43.1 | Dark | Down | 53.6 | 144.0 | Up | 08:38:10 - 09:08:10 | 4170 |
| Gimple | 08:53:10 | -43.0 | Dark | Down | 53.7 | 144.1 | Up | 08:38:10 - 09:08:10 | 4167 |
| Quincy | 08:53:11 | -43.3 | Dark | Down | 53.8 | 143.9 | Up | 08:38:11 - 09:08:11 | 4154 |
| Portola | 08:53:09 | -43.3 | Dark | Down | 54.1 | 144.5 | Up | 08:38:09 - 09:08:09 | 4128 |
| Reno | 08:53:08 | -43.4 | Dark | Down | 54.6 | 145.2 | Up | 08:38:08 - 09:08:08 | 4085 |
| Carson City | 08:53:09 | -43.7 | Dark | Down | 54.9 | 145.0 | Up | 08:38:09 - 09:08:09 | 4056 |
| Gardnerville | 08:53:09 | -43.9 | Dark | Down | 55.2 | 144.9 | Up | 08:38:09 - 09:08:09 | 4035 |
| Yerington | 08:53:07 | -43.7 | Dark | Down | 55.4 | 145.8 | Up | 08:38:07 - 09:08:07 | 4018 |
| Hawthorne | 08:53:07 | -44.0 | Dark | Down | 56.0 | 146.2 | Up | 08:38:07 - 09:08:07 | 3962 |
| Lee Vining | 08:53:09 | -44.6 | Dark | Down | 56.2 | 145.0 | Up | 08:38:09 - 09:08:09 | 3934 |
| Tonopah | 08:53:02 | -44.0 | Dark | Down | 57.0 | 148.1 | Up | 08:38:02 - 09:08:02 | 3874 |
| Bishop | 08:53:09 | -45.0 | Dark | Down | 57.1 | 145.7 | Up | 08:38:09 - 09:08:09 | 3859 |
| Beatty | 08:53:03 | -44.9 | Dark | Down | 58.2 | 147.9 | Up | 08:38:03 - 09:08:03 | 3762 |
| Indian Springs | 08:53:00 | -44.8 | Dark | Down | 58.9 | 149.5 | Up | 08:38:00 - 09:08:00 | 3696 |
| Dunrhomin | 08:52:07 | -37.5 | Dark | Down | 58.2 | 170.4 | Up | 08:37:07 - 09:07:07 | 3643 |
| Henderson | 08:52:59 | -45.1 | Dark | Down | 59.6 | 150.2 | Up | 08:37:59 - 09:07:59 | 3626 |
| Wildwood | 08:53:19 | -48.1 | Dark | Down | 59.6 | 142.3 | Up | 08:38:19 - 09:08:19 | 3594 |
| Laughlin/Bullhead City | 08:52:59 | -45.7 | Dark | Down | 60.5 | 150.2 | Up | 08:37:59 - 09:07:59 | 3536 |
| Patrick | 08:52:56 | -45.2 | Dark | Down | 60.6 | 151.7 | Up | 08:37:56 - 09:07:56 | 3532 |
| Kingman/Dolan Springs | 08:52:57 | -45.5 | Dark | Down | 60.7 | 151.2 | Up | 08:37:57 - 09:07:57 | 3520 |
| Mohave Valley | 08:53:00 | -45.9 | Dark | Down | 60.8 | 150.0 | Up | 08:38:00 - 09:08:00 | 3513 |
| Idyllwild | 08:53:13 | -47.7 | Dark | Down | 60.8 | 145.1 | Up | 08:38:13 - 09:08:13 | 3493 |
| Lake Havasu City | 08:53:00 | -46.2 | Dark | Down | 61.2 | 150.1 | Up | 08:38:00 - 09:08:00 | 3469 |
| Parker | 08:53:01 | -46.5 | Dark | Down | 61.6 | 149.8 | Up | 08:38:01 - 09:08:01 | 3437 |
| Calipatria | 08:53:09 | -47.8 | Dark | Down | 61.9 | 146.6 | Up | 08:38:09 - 09:08:09 | 3395 |
| Yuma | 08:53:06 | -47.9 | Dark | Down | 62.7 | 147.8 | Up | 08:38:06 - 09:08:06 | 3323 |
| George/Scottsdale | 08:52:52 | -45.8 | Dark | Down | 62.9 | 154.1 | Up | 08:37:52 - 09:07:52 | 3310 |
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 04PW107, (2026/09/09 08:53UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 46.96 74 6Bet Ari 01:54:38.6 +20:48:26 2.6 13.92 109 PPM 144653 01:29:03.1 +07:17:38 6.4 1.71 120 PPM 144536 01:23:06.9 +09:11:14 7.7 0.74 121 PPM 144596 01:25:33.1 +09:18:00 10.0 0.53 120 PPM 144593 01:25:25.8 +08:57:28 10.1 0.19 121 04PW107 01:25:35.9 +08:46:28 14.2 121 Positions are for J2000
Event circumstances last updated at 2022/01/16 23:42:19 UT
Marc W. Buie, Southwest Research Institute