Event between (78799) 02XW93 and star GA1240:02804763 with event index number of 2436598
Geocentric closest approach at 2026/01/23 04:32:11 UTC
J2000 position of star is 06:37:20.6 +34:44:10
Equinox of date position of star is 06:38:57.0 +34:42:50
Stellar brightness G=16.4,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 102 degrees from the moon.
Moon is 19% illuminated.
Apparent brightness V=21.6
[RECON map]
Object is 46.3 AU from the Sun
and 45.4 AU from the Earth.
Apparent velocity is 23.8
km/sec on the sky relative to the star, or,
2.6 arcsec/hr.
The 1-sigma error in the time of the event is 184 seconds.
The 1-sigma cross-track error in the shadow position is
1816 km.
The sky-plane scale is
32941.1 km/arcsec.
The object has an absolute magnitude Hv=4.9
Diameter=605.4 km assuming a 5% albedo -- 26.5 sec chord
Diameter=247.1 km assuming a 30% albedo -- 10.8 sec chord
Dynamical classification is CENTAURR
Star training set for 78799, (2026/01/23 04:35UT) Object RA Dec mag sep mel Pollux 07:46:54.6 +27:57:40 1.1 15.95 118 34Bet Aur 06:01:26.5 +44:56:50 1.9 12.51 94 PPM 071742 06:34:09.2 +32:26:03 6.0 2.50 101 PPM 071753 06:34:29.3 +35:02:30 8.1 1.00 101 PPM 071867 06:39:04.0 +34:30:01 9.9 0.21 102 PPM 071858 06:38:46.2 +34:44:44 10.5 0.07 102 78799 06:39:04.5 +34:42:44 16.4 103 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
4.9 sigma about the mid-time.
The median site spacing is 28.2 km
RECON observability=1.0 and success probability=0.0%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kamloops | 04:33:34 | -36.9 | Dark | Up | 63.8 | 116.4 | Up | 04:18:34 - 04:48:34 | 8361 |
| Sleaford | 04:32:52 | -44.6 | Dark | Down | 69.8 | 143.4 | Up | 04:17:52 - 04:47:52 | 8282 |
| Kelowna | 04:33:33 | -37.7 | Dark | Up | 64.7 | 116.1 | Up | 04:18:33 - 04:48:33 | 8261 |
| Peachland | 04:33:34 | -37.6 | Dark | Up | 64.5 | 115.5 | Up | 04:18:34 - 04:48:34 | 8256 |
| Summerland | 04:33:34 | -37.7 | Dark | Up | 64.7 | 115.3 | Up | 04:18:34 - 04:48:34 | 8239 |
| Penticton | 04:33:34 | -37.7 | Dark | Up | 64.8 | 115.3 | Up | 04:18:34 - 04:48:34 | 8230 |
| Victoria | 04:33:45 | -35.5 | Dark | Up | 62.8 | 108.6 | Up | 04:18:45 - 04:48:45 | 8211 |
| Oliver | 04:33:34 | -37.8 | Dark | Up | 64.9 | 114.6 | Up | 04:18:34 - 04:48:34 | 8194 |
| Anarchist Mountain Observatory | 04:33:35 | -38.0 | Dark | Up | 65.1 | 114.6 | Up | 04:18:35 - 04:48:35 | 8173 |
| Okanogan | 04:33:36 | -38.0 | Dark | Up | 65.2 | 113.0 | Up | 04:18:36 - 04:48:36 | 8112 |
| Brewster | 04:33:37 | -38.0 | Dark | Up | 65.2 | 112.2 | Up | 04:18:37 - 04:48:37 | 8088 |
| Manson/Chelan | 04:33:38 | -37.8 | Dark | Up | 65.1 | 111.3 | Up | 04:18:38 - 04:48:38 | 8075 |
| Wenatchee | 04:33:40 | -37.8 | Dark | Up | 65.1 | 110.2 | Up | 04:18:40 - 04:48:40 | 8030 |
| Ellensburg | 04:33:41 | -37.7 | Dark | Up | 65.1 | 109.1 | Up | 04:18:41 - 04:48:41 | 7992 |
| Yakima | 04:33:42 | -37.8 | Dark | Up | 65.2 | 108.2 | Up | 04:18:42 - 04:48:42 | 7951 |
| Toppenish/White Swan | 04:33:41 | -38.0 | Dark | Up | 65.4 | 108.0 | Up | 04:18:41 - 04:48:41 | 7925 |
| The Dalles | 04:33:45 | -37.6 | Dark | Up | 65.1 | 105.4 | Up | 04:18:45 - 04:48:45 | 7863 |
| PNWRO | 04:33:38 | -39.0 | Dark | Up | 66.5 | 109.0 | Up | 04:18:38 - 04:48:38 | 7855 |
| Maupin | 04:33:45 | -37.7 | Dark | Up | 65.3 | 104.7 | Up | 04:18:45 - 04:48:45 | 7817 |
| Sisters | 04:33:49 | -37.5 | Dark | Up | 65.2 | 102.3 | Up | 04:18:49 - 04:48:49 | 7738 |
| Bend | 04:33:48 | -37.8 | Dark | Up | 65.4 | 102.1 | Up | 04:18:48 - 04:48:48 | 7708 |
| Oregon Observatory | 04:33:49 | -37.7 | Dark | Up | 65.4 | 101.6 | Up | 04:18:49 - 04:48:49 | 7693 |
| Chiloquin | 04:33:52 | -37.6 | Dark | Up | 65.3 | 98.4 | Up | 04:18:52 - 04:48:52 | 7566 |
| Klamath Falls | 04:33:53 | -37.7 | Dark | Up | 65.4 | 97.7 | Up | 04:18:53 - 04:48:53 | 7529 |
| Cedarville | 04:33:49 | -39.0 | Dark | Up | 66.7 | 97.6 | Up | 04:18:49 - 04:48:49 | 7417 |
| Fall River/Burney | 04:33:53 | -38.1 | Dark | Up | 65.8 | 95.4 | Up | 04:18:53 - 04:48:53 | 7396 |
| Greenville | 04:33:54 | -38.6 | Dark | Up | 66.2 | 93.8 | Up | 04:18:54 - 04:48:54 | 7290 |
| Gimple | 04:33:53 | -38.7 | Dark | Up | 66.3 | 93.8 | Up | 04:18:53 - 04:48:53 | 7288 |
| Quincy | 04:33:54 | -38.6 | Dark | Up | 66.3 | 93.3 | Up | 04:18:54 - 04:48:54 | 7269 |
| Portola | 04:33:52 | -39.0 | Dark | Up | 66.6 | 93.4 | Up | 04:18:52 - 04:48:52 | 7244 |
| Reno | 04:33:51 | -39.5 | Dark | Up | 67.1 | 93.2 | Up | 04:18:51 - 04:48:51 | 7200 |
| Carson City | 04:33:51 | -39.6 | Dark | Up | 67.2 | 92.4 | Up | 04:18:51 - 04:48:51 | 7162 |
| Gardnerville | 04:33:51 | -39.6 | Dark | Up | 67.2 | 91.8 | Up | 04:18:51 - 04:48:51 | 7135 |
| Yerington | 04:33:49 | -40.1 | Dark | Up | 67.7 | 92.4 | Up | 04:18:49 - 04:48:49 | 7126 |
| Hawthorne | 04:33:49 | -40.6 | Dark | Up | 68.1 | 91.6 | Up | 04:18:49 - 04:48:49 | 7064 |
| Lee Vining | 04:33:51 | -40.2 | Dark | Up | 67.7 | 89.9 | Up | 04:18:51 - 04:48:51 | 7016 |
| Dunrhomin | 04:33:02 | -50.1 | Dark | Down | 77.8 | 112.6 | Up | 04:18:02 - 04:48:02 | 7006 |
| Nikitin | 04:33:02 | -50.2 | Dark | Down | 77.9 | 111.8 | Up | 04:18:02 - 04:48:02 | 6986 |
| CU-SBO | 04:33:01 | -50.2 | Dark | Down | 77.8 | 111.3 | Up | 04:18:01 - 04:48:01 | 6980 |
| Bishop | 04:33:49 | -40.9 | Dark | Up | 68.3 | 88.8 | Up | 04:18:49 - 04:48:49 | 6935 |
| Beatty | 04:33:45 | -42.2 | Dark | Up | 69.6 | 88.5 | Up | 04:18:45 - 04:48:45 | 6848 |
| Patrick | 04:33:36 | -44.7 | Dark | Up | 71.8 | 85.6 | Up | 04:18:36 - 04:48:36 | 6625 |
| Laughlin/Bullhead City | 04:33:39 | -44.1 | Dark | Up | 71.2 | 84.7 | Up | 04:18:39 - 04:48:39 | 6614 |
| Wildwood | 04:33:54 | -41.0 | Dark | Up | 67.8 | 80.7 | Up | 04:18:54 - 04:48:54 | 6592 |
| Lake Havasu City | 04:33:39 | -44.4 | Dark | Up | 71.3 | 82.8 | Up | 04:18:39 - 04:48:39 | 6536 |
| Idyllwild | 04:33:48 | -42.6 | Dark | Up | 69.3 | 80.1 | Up | 04:18:48 - 04:48:48 | 6508 |
| Calipatria | 04:33:45 | -43.6 | Dark | Up | 70.2 | 78.7 | Up | 04:18:45 - 04:48:45 | 6415 |
| George/Scottsdale | 04:33:31 | -46.5 | Dark | Up | 73.2 | 80.8 | Up | 04:18:31 - 04:48:31 | 6401 |
| Yuma | 04:33:41 | -44.3 | Dark | Up | 70.8 | 77.5 | Up | 04:18:41 - 04:48:41 | 6348 |
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 78799, (2026/01/23 04:35UT) Object RA Dec mag sep mel Pollux 07:45:17.9 +28:01:33 1.1 15.95 118 34Bet Aur 05:59:31.6 +44:56:51 1.9 12.51 94 PPM 071742 06:32:27.1 +32:27:18 6.0 2.50 101 PPM 071753 06:32:45.0 +35:03:47 8.1 1.00 101 PPM 071867 06:37:20.2 +34:31:28 9.9 0.21 102 PPM 071858 06:37:02.3 +34:46:10 10.5 0.07 102 78799 06:37:20.6 +34:44:10 16.4 102 Positions are for J2000
Event circumstances last updated at 2024/03/04 05:39:07 UT
Marc W. Buie, Southwest Research Institute