Event between (574398) 10LO33 and star GA0960:17070089 with event index number of 2519363
Geocentric closest approach at 2026/07/27 04:41:52 UTC
J2000 position of star is 21:39:25.6 +06:02:36
Equinox of date position of star is 21:40:31.6 +06:08:38
Stellar brightness G=14.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 56 degrees from the moon.
Moon is 95% illuminated.
TNO apparent brightness V=20.6
[RECON map]
TNO is 15.7 AU from the Sun
and 14.8 AU from the Earth.
The TNO is moving 18.4
km/sec on the sky relative to the star, or,
6.2 arcsec/hr.
The 1-sigma error in the time of the event is 625 seconds.
The 1-sigma cross-track error in the shadow position is
4900 km.
The sky-plane scale is
10748.4 km/arcsec.
The TNO has an absolute magnitude Hv=8.6
Diameter=116.4 km assuming a 5% albedo -- 6.3 sec chord
Diameter=47.5 km assuming a 30% albedo -- 2.6 sec chord
Dynamical classification is CENTAURR
Star training set for 574398, (2026/07/27 04:42UT) Object RA Dec mag sep mel Vega 18:37:50.3 +38:48:34 0.0 52.55 66 Markab 23:06:05.2 +15:20:55 2.5 22.86 78 4 Peg 21:39:51.7 +05:53:34 5.9 0.35 56 PPM 172013 21:38:33.6 +05:58:18 8.2 0.58 55 4 Peg 21:39:51.7 +05:53:34 5.9 0.35 56 PPM 172078 21:41:09.3 +06:21:15 10.5 0.21 56 574398 21:40:45.1 +06:09:53 14.8 56 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
1.4 sigma about the mid-time.
The median site spacing is 24.3 km
RECON observability=0.4 and success probability=2.4%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kamloops | 04:44:45 | -7.1 | NT | Up | 17.8 | 102.6 | Really Low | 04:29:45 - 04:59:45 | 7304 |
| Kelowna | 04:44:47 | -8.1 | NT | Up | 18.5 | 103.0 | Really Low | 04:29:47 - 04:59:47 | 7243 |
| Sleaford | 04:44:15 | -11.9 | NT | Up | 25.8 | 115.5 | Low | 04:29:15 - 04:59:15 | 7241 |
| Peachland | 04:44:48 | -8.0 | NT | Up | 18.4 | 102.8 | Really Low | 04:29:48 - 04:59:48 | 7239 |
| Summerland | 04:44:49 | -8.2 | NT | Up | 18.5 | 102.8 | Really Low | 04:29:49 - 04:59:49 | 7229 |
| Penticton | 04:44:49 | -8.3 | NT | Up | 18.6 | 102.9 | Really Low | 04:29:49 - 04:59:49 | 7223 |
| Oliver | 04:44:51 | -8.5 | NT | Up | 18.7 | 102.8 | Really Low | 04:29:51 - 04:59:51 | 7200 |
| Victoria | 04:44:59 | -7.1 | NT | Up | 16.3 | 99.5 | Really Low | 04:29:59 - 04:59:59 | 7197 |
| Anarchist Mountain Observatory | 04:44:51 | -8.7 | NT | Up | 18.8 | 102.9 | Really Low | 04:29:51 - 04:59:51 | 7187 |
| Tonasket | 04:44:53 | -8.9 | NT | Up | 18.8 | 102.7 | Really Low | 04:29:53 - 04:59:53 | 7167 |
| Okanogan | 04:44:55 | -9.1 | NT | Up | 18.8 | 102.5 | Really Low | 04:29:55 - 04:59:55 | 7147 |
| Brewster | 04:44:56 | -9.1 | NT | Up | 18.8 | 102.2 | Really Low | 04:29:56 - 04:59:56 | 7131 |
| Manson/Chelan | 04:44:58 | -9.1 | NT | Up | 18.6 | 101.9 | Really Low | 04:29:58 - 04:59:58 | 7121 |
| Wenatchee | 04:45:01 | -9.3 | NT | Up | 18.6 | 101.6 | Really Low | 04:30:01 - 05:00:01 | 7091 |
| Ellensburg | 04:45:02 | -9.5 | NT | Up | 18.5 | 101.3 | Really Low | 04:30:02 - 05:00:02 | 7065 |
| Yakima | 04:45:04 | -9.8 | NT | Up | 18.6 | 101.2 | Really Low | 04:30:04 - 05:00:04 | 7037 |
| Toppenish/White Swan | 04:45:05 | -10.0 | NT | Up | 18.7 | 101.2 | Really Low | 04:30:05 - 05:00:05 | 7020 |
| Goldendale | 04:45:08 | -10.2 | NT | Up | 18.5 | 100.7 | Really Low | 04:30:08 - 05:00:08 | 6987 |
| PNWRO | 04:45:05 | -11.0 | NT | Up | 19.8 | 102.2 | Really Low | 04:30:05 - 05:00:05 | 6978 |
| The Dalles | 04:45:10 | -10.1 | NT | Up | 18.3 | 100.4 | Really Low | 04:30:10 - 05:00:10 | 6975 |
| Maupin | 04:45:11 | -10.5 | NT | Up | 18.5 | 100.3 | Really Low | 04:30:11 - 05:00:11 | 6944 |
| Sisters | 04:45:16 | -10.8 | NT | Up | 18.3 | 99.7 | Really Low | 04:30:16 - 05:00:16 | 6887 |
| Bend | 04:45:17 | -11.1 | NT | Up | 18.5 | 99.8 | Really Low | 04:30:17 - 05:00:17 | 6867 |
| Oregon Observatory | 04:45:18 | -11.1 | NT | Up | 18.5 | 99.6 | Really Low | 04:30:18 - 05:00:18 | 6856 |
| North Lake | 04:45:20 | -11.9 | NT | Up | 19.0 | 99.8 | Really Low | 04:30:20 - 05:00:20 | 6803 |
| Chiloquin | 04:45:24 | -11.8 | NT | Up | 18.4 | 98.9 | Really Low | 04:30:24 - 05:00:24 | 6764 |
| Klamath Falls | 04:45:26 | -12.1 | AT | Up | 18.5 | 98.9 | Really Low | 04:30:26 - 05:00:26 | 6737 |
| Lakeview | 04:45:23 | -12.9 | AT | Up | 19.6 | 99.9 | Really Low | 04:30:23 - 05:00:23 | 6718 |
| Cedarville | 04:45:27 | -13.4 | AT | Up | 19.8 | 99.8 | Really Low | 04:30:27 - 05:00:27 | 6666 |
| Fall River/Burney | 04:45:30 | -13.0 | AT | Up | 19.0 | 98.8 | Really Low | 04:30:30 - 05:00:30 | 6643 |
| Susanville | 04:45:32 | -13.9 | AT | Up | 19.7 | 99.1 | Really Low | 04:30:32 - 05:00:32 | 6586 |
| Greenville | 04:45:33 | -13.9 | AT | Up | 19.5 | 98.8 | Really Low | 04:30:33 - 05:00:33 | 6568 |
| Gimple | 04:45:33 | -14.0 | AT | Up | 19.6 | 98.8 | Really Low | 04:30:33 - 05:00:33 | 6566 |
| Quincy | 04:45:34 | -14.0 | AT | Up | 19.5 | 98.7 | Really Low | 04:30:34 - 05:00:34 | 6552 |
| Portola | 04:45:34 | -14.4 | AT | Up | 19.9 | 99.0 | Really Low | 04:30:34 - 05:00:34 | 6536 |
| Reno | 04:45:34 | -15.0 | AT | Up | 20.4 | 99.3 | Low | 04:30:34 - 05:00:34 | 6507 |
| Carson City | 04:45:35 | -15.2 | AT | Up | 20.5 | 99.2 | Low | 04:30:35 - 05:00:35 | 6479 |
| Gardnerville | 04:45:37 | -15.4 | AT | Up | 20.6 | 99.2 | Low | 04:30:37 - 05:00:37 | 6458 |
| Yerington | 04:45:35 | -15.7 | AT | Up | 21.0 | 99.6 | Low | 04:30:35 - 05:00:35 | 6455 |
| Hawthorne | 04:45:37 | -16.3 | AT | Up | 21.5 | 99.8 | Low | 04:30:37 - 05:00:37 | 6411 |
| Dunrhomin | 04:45:00 | -21.9 | Dark | Up | 31.0 | 110.4 | Up | 04:30:00 - 05:00:00 | 6373 |
| Lee Vining | 04:45:40 | -16.4 | AT | Up | 21.3 | 99.2 | Low | 04:30:40 - 05:00:40 | 6372 |
| Tonopah | 04:45:36 | -17.5 | AT | Up | 22.7 | 100.5 | Low | 04:30:36 - 05:00:36 | 6355 |
| Bishop | 04:45:41 | -17.3 | AT | Up | 21.9 | 99.5 | Low | 04:30:41 - 05:00:41 | 6313 |
| Beatty | 04:45:40 | -18.5 | Dark | Up | 23.3 | 100.4 | Low | 04:30:40 - 05:00:40 | 6254 |
| Indian Springs | 04:45:39 | -19.4 | Dark | Up | 24.2 | 100.9 | Low | 04:30:39 - 05:00:39 | 6212 |
| Henderson | 04:45:39 | -20.1 | Dark | Up | 24.8 | 101.2 | Low | 04:30:39 - 05:00:39 | 6157 |
| Patrick | 04:45:38 | -21.2 | Dark | Up | 25.9 | 101.6 | Low | 04:30:38 - 05:00:38 | 6089 |
| Laughlin/Bullhead City | 04:45:41 | -21.0 | Dark | Up | 25.4 | 101.0 | Low | 04:30:41 - 05:00:41 | 6078 |
| Kingman/Dolan Springs | 04:45:41 | -21.3 | Dark | Up | 25.8 | 101.4 | Low | 04:30:41 - 05:00:41 | 6073 |
| Mohave Valley | 04:45:42 | -21.2 | Dark | Up | 25.4 | 100.9 | Low | 04:30:42 - 05:00:42 | 6054 |
| Wildwood | 04:45:53 | -19.3 | Dark | Up | 22.3 | 98.1 | Low | 04:30:53 - 05:00:53 | 6041 |
| Lake Havasu City | 04:45:43 | -21.6 | Dark | Up | 25.7 | 100.9 | Low | 04:30:43 - 05:00:43 | 6016 |
| Parker | 04:45:45 | -21.9 | Dark | Up | 25.8 | 100.7 | Low | 04:30:45 - 05:00:45 | 5985 |
| Idyllwild | 04:45:52 | -20.7 | Dark | Up | 23.9 | 99.1 | Low | 04:30:52 - 05:00:52 | 5984 |
| George/Scottsdale | 04:45:41 | -23.6 | Dark | Up | 27.8 | 102.1 | Low | 04:30:41 - 05:00:41 | 5914 |
| Calipatria | 04:45:51 | -21.9 | Dark | Up | 25.0 | 99.5 | Low | 04:30:51 - 05:00:51 | 5914 |
| Yuma | 04:45:51 | -22.7 | Dark | Up | 25.8 | 99.9 | Low | 04:30:51 - 05:00:51 | 5863 |
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 574398, (2026/07/27 04:42UT) Object RA Dec mag sep mel Vega 18:36:56.7 +38:47:07 0.0 52.55 66 Markab 23:04:45.8 +15:12:18 2.5 22.86 78 4 Peg 21:38:32.1 +05:46:19 5.9 0.35 56 PPM 172013 21:37:14.0 +05:51:05 8.2 0.58 55 4 Peg 21:38:32.1 +05:46:19 5.9 0.35 56 PPM 172078 21:39:49.8 +06:13:58 10.5 0.21 56 574398 21:39:25.6 +06:02:36 14.8 56 Positions are for J2000
Event circumstances last updated at 2022/01/15 23:54:29 UT
Marc W. Buie, Southwest Research Institute