Event between (612141) 99XY143 and star GA1080:02795257 with event index number of 2806179
Geocentric closest approach at 2025/02/21 02:19:53 UTC
J2000 position of star is 07:08:56.3 +18:36:53
Equinox of date position of star is 07:10:17.5 +18:34:34
Stellar brightness G=16.0,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 140 degrees from the moon.
Moon is 47% illuminated.
Apparent brightness V=22.8
[RECON map]
Object is 45.2 AU from the Sun
and 44.5 AU from the Earth.
Apparent velocity is 16.9
km/sec on the sky relative to the star, or,
1.9 arcsec/hr.
The 1-sigma error in the time of the event is 334 seconds.
The 1-sigma cross-track error in the shadow position is
3388 km.
The sky-plane scale is
32268.1 km/arcsec.
The object has an absolute magnitude Hv=6.2
Diameter=348.3 km assuming a 5% albedo -- 20.6 sec chord
Diameter=142.2 km assuming a 30% albedo -- 8.4 sec chord
Dynamical classification is CLASSICAL
Star training set for 612141, (2025/02/21 02:21UT) Object RA Dec mag sep mel Pollux 07:46:51.2 +27:57:48 1.1 12.57 134 Alhena 06:39:09.8 +16:22:32 1.9 7.77 146 51 Gem 07:14:48.8 +16:06:51 5.0 2.67 138 PPM 123618 07:10:53.5 +18:30:27 8.1 0.13 139 612141 07:10:24.4 +18:34:23 16.0 139 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
2.7 sigma about the mid-time.
The median site spacing is 19.4 km
RECON observability=0.1 and success probability=4.0%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 02:22:12 | -18.2 | Dark | Down | 50.7 | 138.4 | Up | 02:07:12 - 02:37:12 | -5919 |
| Kamloops | 02:23:04 | -9.4 | NT | Down | 44.7 | 119.9 | Up | 02:08:04 - 02:38:04 | -6028 |
| Kelowna | 02:23:02 | -9.9 | NT | Down | 45.6 | 120.2 | Up | 02:08:02 - 02:38:02 | -6111 |
| Peachland | 02:23:04 | -9.7 | NT | Down | 45.5 | 119.8 | Up | 02:08:04 - 02:38:04 | -6120 |
| Summerland | 02:23:03 | -9.7 | NT | Down | 45.6 | 119.7 | Up | 02:08:03 - 02:38:03 | -6135 |
| Penticton | 02:23:04 | -9.8 | NT | Down | 45.7 | 119.8 | Up | 02:08:04 - 02:38:04 | -6142 |
| Oliver | 02:23:05 | -9.8 | NT | Down | 45.9 | 119.5 | Up | 02:08:05 - 02:38:05 | -6177 |
| Anarchist Mountain Observatory | 02:23:05 | -9.9 | NT | Down | 46.1 | 119.5 | Up | 02:08:05 - 02:38:05 | -6194 |
| Victoria | 02:23:18 | -7.2 | NT | Down | 43.9 | 114.9 | Up | 02:08:18 - 02:38:18 | -6219 |
| Okanogan | 02:23:07 | -9.7 | NT | Down | 46.3 | 118.7 | Up | 02:08:07 - 02:38:07 | -6256 |
| Brewster | 02:23:07 | -9.5 | NT | Down | 46.3 | 118.3 | Up | 02:08:07 - 02:38:07 | -6282 |
| Manson/Chelan | 02:23:09 | -9.3 | NT | Down | 46.2 | 117.7 | Up | 02:08:09 - 02:38:09 | -6301 |
| Wenatchee | 02:23:12 | -9.1 | NT | Down | 46.3 | 117.1 | Up | 02:08:12 - 02:38:12 | -6347 |
| Ellensburg | 02:23:13 | -8.9 | NT | Down | 46.3 | 116.5 | Up | 02:08:13 - 02:38:13 | -6387 |
| Yakima | 02:23:14 | -8.9 | NT | Down | 46.5 | 116.1 | Up | 02:08:14 - 02:38:14 | -6427 |
| Toppenish/White Swan | 02:23:13 | -9.0 | NT | Down | 46.7 | 116.0 | Up | 02:08:13 - 02:38:13 | -6450 |
| PNWRO | 02:23:09 | -10.0 | NT | Down | 47.8 | 117.2 | Up | 02:08:09 - 02:38:09 | -6494 |
| The Dalles | 02:23:18 | -8.4 | NT | Down | 46.5 | 114.5 | Up | 02:08:18 - 02:38:18 | -6523 |
| Maupin | 02:23:18 | -8.4 | NT | Down | 46.8 | 114.2 | Up | 02:08:18 - 02:38:18 | -6566 |
| Sisters | 02:23:23 | -7.9 | NT | Down | 46.8 | 112.9 | Up | 02:08:23 - 02:38:23 | -6652 |
| Bend | 02:23:21 | -8.1 | NT | Down | 47.1 | 112.9 | Up | 02:08:21 - 02:38:21 | -6678 |
| Oregon Observatory | 02:23:22 | -8.0 | NT | Down | 47.1 | 112.6 | Up | 02:08:22 - 02:38:22 | -6695 |
| Chiloquin | 02:23:28 | -7.5 | NT | Down | 47.3 | 110.9 | Up | 02:08:28 - 02:38:28 | -6827 |
| Klamath Falls | 02:23:27 | -7.5 | NT | Down | 47.5 | 110.6 | Up | 02:08:27 - 02:38:27 | -6863 |
| Cedarville | 02:23:22 | -8.6 | NT | Down | 48.8 | 111.4 | Up | 02:08:22 - 02:38:22 | -6944 |
| Fall River/Burney | 02:23:27 | -7.7 | NT | Down | 48.1 | 109.7 | Up | 02:08:27 - 02:38:27 | -6987 |
| Greenville | 02:23:27 | -7.9 | NT | Down | 48.8 | 109.2 | Up | 02:08:27 - 02:38:27 | -7084 |
| Gimple | 02:23:28 | -8.0 | NT | Down | 48.8 | 109.3 | Up | 02:08:28 - 02:38:28 | -7085 |
| Quincy | 02:23:28 | -7.9 | NT | Down | 48.8 | 109.0 | Up | 02:08:28 - 02:38:28 | -7106 |
| Dunrhomin | 02:22:22 | -19.7 | Dark | Down | 59.2 | 127.1 | Up | 02:07:22 - 02:37:22 | -7107 |
| Portola | 02:23:26 | -8.2 | NT | Down | 49.2 | 109.3 | Up | 02:08:26 - 02:38:26 | -7122 |
| Nikitin | 02:22:23 | -19.7 | Dark | Down | 59.3 | 126.8 | Up | 02:07:23 - 02:37:23 | -7126 |
| CU-SBO | 02:22:21 | -19.7 | Dark | Down | 59.3 | 126.6 | Up | 02:07:21 - 02:37:21 | -7133 |
| Reno | 02:23:24 | -8.7 | NT | Down | 49.8 | 109.6 | Up | 02:08:24 - 02:38:24 | -7153 |
| Carson City | 02:23:24 | -8.7 | NT | Down | 49.9 | 109.2 | Up | 02:08:24 - 02:38:24 | -7191 |
| Yerington | 02:23:23 | -9.1 | NT | Down | 50.4 | 109.6 | Up | 02:08:23 - 02:38:23 | -7215 |
| Gardnerville | 02:23:25 | -8.7 | NT | Down | 50.0 | 109.0 | Up | 02:08:25 - 02:38:25 | -7217 |
| Hawthorne | 02:23:19 | -9.5 | NT | Down | 51.0 | 109.5 | Up | 02:08:19 - 02:38:19 | -7267 |
| Lee Vining | 02:23:23 | -9.0 | NT | Down | 50.8 | 108.4 | Up | 02:08:23 - 02:38:23 | -7324 |
| Bishop | 02:23:21 | -9.5 | NT | Down | 51.5 | 108.4 | Up | 02:08:21 - 02:38:21 | -7391 |
| Beatty | 02:23:16 | -10.8 | NT | Down | 52.9 | 109.3 | Up | 02:08:16 - 02:38:16 | -7448 |
| Patrick | 02:23:03 | -13.0 | AT | Down | 55.6 | 110.1 | Up | 02:08:03 - 02:38:03 | -7618 |
| Laughlin/Bullhead City | 02:23:07 | -12.4 | AT | Down | 55.1 | 109.1 | Up | 02:08:07 - 02:38:07 | -7642 |
| Lake Havasu City | 02:23:09 | -12.5 | AT | Down | 55.5 | 108.5 | Up | 02:08:09 - 02:38:09 | -7716 |
| Wildwood | 02:23:27 | -9.0 | NT | Down | 52.3 | 104.2 | Up | 02:08:27 - 02:38:27 | -7741 |
| Idyllwild | 02:23:18 | -10.5 | NT | Down | 53.9 | 105.3 | Up | 02:08:18 - 02:38:18 | -7788 |
| George/Scottsdale | 02:22:58 | -14.5 | AT | Down | 57.7 | 109.7 | Up | 02:07:58 - 02:37:58 | -7805 |
| Calipatria | 02:23:15 | -11.5 | NT | Down | 55.0 | 105.5 | Up | 02:08:15 - 02:38:15 | -7860 |
| Yuma | 02:23:11 | -12.2 | AT | Down | 55.8 | 105.7 | Up | 02:08:11 - 02:38:11 | -7910 |
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 612141, (2025/02/21 02:21UT) Object RA Dec mag sep mel Pollux 07:45:17.9 +28:01:33 1.1 12.57 134 Alhena 06:37:42.8 +16:23:56 1.9 7.77 146 51 Gem 07:13:22.3 +16:09:31 5.0 2.67 138 PPM 123618 07:09:25.5 +18:32:59 8.1 0.13 139 612141 07:08:56.3 +18:36:53 16.0 140 Positions are for J2000
Event circumstances last updated at 2023/03/04 04:05:11 UT
Marc W. Buie, Southwest Research Institute