Event between (69990) 98WU31 and star GA1080:02144159 with event index number of 1429841
Geocentric closest approach at 2025/01/21 03:15:46 UTC
J2000 position of star is 06:33:07.9 +18:44:59
Equinox of date position of star is 06:34:34.1 +18:43:47
Stellar brightness G=16.7,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 106 degrees from the moon.
Moon is 57% illuminated.
Apparent brightness V=23.9
[RECON map]
Object is 36.7 AU from the Sun
and 35.8 AU from the Earth.
Apparent velocity is 22.9
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 496 seconds.
The 1-sigma cross-track error in the shadow position is
2063 km.
The sky-plane scale is
25939.2 km/arcsec.
The object has an absolute magnitude Hv=8.2
Diameter=144.5 km assuming a 5% albedo -- 6.1 sec chord
Diameter=59.0 km assuming a 30% albedo -- 2.5 sec chord
Dynamical classification is 3:2E
Star training set for 69990, (2025/01/21 03:16UT) Object RA Dec mag sep mel Betelgeuse 05:56:31.7 +07:24:35 0.4 14.62 113 Alhena 06:39:09.5 +16:22:33 1.9 2.59 104 18Nu Gem 06:30:27.0 +20:11:38 4.1 1.76 107 PPM 122704 06:36:13.8 +18:19:49 8.4 0.55 105 PPM 122665 06:35:00.1 +18:33:32 9.0 0.19 105 69990 06:34:36.2 +18:43:45 16.7 105 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
1.8 sigma about the mid-time.
The median site spacing is 32.3 km
RECON observability=1.0 and success probability=2.9%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kamloops | 03:18:13 | -25.5 | Dark | Down | 40.4 | 111.8 | Up | 03:03:13 - 03:33:13 | 6014 |
| Sleaford | 03:17:37 | -34.3 | Dark | Down | 47.4 | 128.5 | Up | 03:02:37 - 03:32:37 | 5991 |
| Kelowna | 03:18:13 | -26.1 | Dark | Down | 41.2 | 112.0 | Up | 03:03:13 - 03:33:13 | 5928 |
| Peachland | 03:18:14 | -25.9 | Dark | Down | 41.1 | 111.7 | Up | 03:03:14 - 03:33:14 | 5922 |
| Summerland | 03:18:14 | -26.0 | Dark | Down | 41.2 | 111.6 | Up | 03:03:14 - 03:33:14 | 5907 |
| Penticton | 03:18:14 | -26.0 | Dark | Down | 41.3 | 111.7 | Up | 03:03:14 - 03:33:14 | 5900 |
| Oliver | 03:18:15 | -26.0 | Dark | Down | 41.4 | 111.4 | Up | 03:03:15 - 03:33:15 | 5867 |
| Victoria | 03:18:25 | -23.5 | Dark | Down | 39.2 | 107.3 | Up | 03:03:25 - 03:33:25 | 5860 |
| Anarchist Mountain Observatory | 03:18:14 | -26.2 | Dark | Down | 41.6 | 111.4 | Up | 03:03:14 - 03:33:14 | 5849 |
| Okanogan | 03:18:16 | -26.0 | Dark | Down | 41.7 | 110.7 | Up | 03:03:16 - 03:33:16 | 5792 |
| Brewster | 03:18:17 | -25.9 | Dark | Down | 41.6 | 110.3 | Up | 03:03:17 - 03:33:17 | 5770 |
| Manson/Chelan | 03:18:19 | -25.6 | Dark | Down | 41.5 | 109.8 | Up | 03:03:19 - 03:33:19 | 5755 |
| Wenatchee | 03:18:21 | -25.5 | Dark | Down | 41.5 | 109.2 | Up | 03:03:21 - 03:33:21 | 5713 |
| Ellensburg | 03:18:22 | -25.3 | Dark | Down | 41.5 | 108.7 | Up | 03:03:22 - 03:33:22 | 5678 |
| Yakima | 03:18:22 | -25.3 | Dark | Down | 41.7 | 108.3 | Up | 03:03:22 - 03:33:22 | 5640 |
| Toppenish/White Swan | 03:18:23 | -25.4 | Dark | Down | 41.8 | 108.3 | Up | 03:03:23 - 03:33:23 | 5617 |
| PNWRO | 03:18:21 | -26.4 | Dark | Down | 42.9 | 109.4 | Up | 03:03:21 - 03:33:21 | 5561 |
| The Dalles | 03:18:26 | -24.8 | Dark | Down | 41.6 | 106.9 | Up | 03:03:26 - 03:33:26 | 5555 |
| Maupin | 03:18:27 | -24.9 | Dark | Down | 41.8 | 106.7 | Up | 03:03:27 - 03:33:27 | 5514 |
| Sisters | 03:18:30 | -24.5 | Dark | Down | 41.7 | 105.5 | Up | 03:03:30 - 03:33:30 | 5437 |
| Bend | 03:18:30 | -24.6 | Dark | Down | 41.9 | 105.5 | Up | 03:03:30 - 03:33:30 | 5410 |
| Oregon Observatory | 03:18:31 | -24.5 | Dark | Down | 41.9 | 105.3 | Up | 03:03:31 - 03:33:31 | 5396 |
| Chiloquin | 03:18:35 | -24.1 | Dark | Down | 41.9 | 103.8 | Up | 03:03:35 - 03:33:35 | 5274 |
| Klamath Falls | 03:18:36 | -24.2 | Dark | Down | 42.1 | 103.5 | Up | 03:03:36 - 03:33:36 | 5240 |
| Cedarville | 03:18:33 | -25.3 | Dark | Down | 43.4 | 104.2 | Up | 03:03:33 - 03:33:33 | 5146 |
| Fall River/Burney | 03:18:36 | -24.3 | Dark | Down | 42.6 | 102.8 | Up | 03:03:36 - 03:33:36 | 5118 |
| Greenville | 03:18:38 | -24.6 | Dark | Down | 43.1 | 102.4 | Up | 03:03:38 - 03:33:38 | 5020 |
| Gimple | 03:18:37 | -24.6 | Dark | Down | 43.2 | 102.4 | Up | 03:03:37 - 03:33:37 | 5019 |
| Quincy | 03:18:38 | -24.6 | Dark | Down | 43.2 | 102.2 | Up | 03:03:38 - 03:33:38 | 5000 |
| Portola | 03:18:37 | -24.9 | Dark | Down | 43.6 | 102.4 | Up | 03:03:37 - 03:33:37 | 4980 |
| Reno | 03:18:36 | -25.4 | Dark | Down | 44.1 | 102.7 | Up | 03:03:36 - 03:33:36 | 4943 |
| Carson City | 03:18:37 | -25.4 | Dark | Down | 44.2 | 102.4 | Up | 03:03:37 - 03:33:37 | 4907 |
| Gardnerville | 03:18:37 | -25.4 | Dark | Down | 44.3 | 102.2 | Up | 03:03:37 - 03:33:37 | 4881 |
| Yerington | 03:18:35 | -25.8 | Dark | Down | 44.7 | 102.7 | Up | 03:03:35 - 03:33:35 | 4877 |
| Dunrhomin | 03:17:53 | -36.5 | Dark | Down | 54.3 | 117.2 | Up | 03:02:53 - 03:32:53 | 4832 |
| Hawthorne | 03:18:35 | -26.2 | Dark | Down | 45.2 | 102.7 | Up | 03:03:35 - 03:33:35 | 4822 |
| Nikitin | 03:17:53 | -36.5 | Dark | Down | 54.4 | 116.9 | Up | 03:02:53 - 03:32:53 | 4813 |
| CU-SBO | 03:17:54 | -36.4 | Dark | Down | 54.4 | 116.8 | Up | 03:02:54 - 03:32:54 | 4807 |
| Lee Vining | 03:18:38 | -25.8 | Dark | Down | 45.0 | 101.7 | Up | 03:03:38 - 03:33:38 | 4773 |
| Bishop | 03:18:36 | -26.3 | Dark | Down | 45.7 | 101.7 | Up | 03:03:36 - 03:33:36 | 4700 |
| Beatty | 03:18:33 | -27.5 | Dark | Down | 47.0 | 102.5 | Up | 03:03:33 - 03:33:33 | 4628 |
| Patrick | 03:18:26 | -29.7 | Dark | Down | 49.6 | 103.1 | Up | 03:03:26 - 03:33:26 | 4432 |
| Laughlin/Bullhead City | 03:18:29 | -29.1 | Dark | Down | 49.1 | 102.3 | Up | 03:03:29 - 03:33:29 | 4416 |
| Wildwood | 03:18:42 | -25.8 | Dark | Down | 46.1 | 98.2 | Up | 03:03:42 - 03:33:42 | 4366 |
| Lake Havasu City | 03:18:29 | -29.3 | Dark | Down | 49.5 | 101.7 | Up | 03:03:29 - 03:33:29 | 4342 |
| Idyllwild | 03:18:37 | -27.3 | Dark | Down | 47.7 | 99.2 | Up | 03:03:37 - 03:33:37 | 4299 |
| George/Scottsdale | 03:18:23 | -31.2 | Dark | Down | 51.6 | 102.7 | Up | 03:03:23 - 03:33:23 | 4227 |
| Calipatria | 03:18:35 | -28.2 | Dark | Down | 48.7 | 99.3 | Up | 03:03:35 - 03:33:35 | 4216 |
| Yuma | 03:18:33 | -28.9 | Dark | Down | 49.5 | 99.4 | Up | 03:03:33 - 03:33:33 | 4157 |
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 69990, (2025/01/21 03:16UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 14.62 113 Alhena 06:37:42.8 +16:23:57 1.9 2.59 104 18Nu Gem 06:28:57.8 +20:12:43 4.1 1.76 107 PPM 122704 06:34:45.8 +18:21:06 8.4 0.55 105 PPM 122665 06:33:31.9 +18:34:47 9.0 0.19 105 69990 06:33:07.9 +18:44:59 16.7 105 Positions are for J2000
Event circumstances last updated at 2024/06/12 03:42:21 UT
Marc W. Buie, Southwest Research Institute