Event between (525815) 05SD278 and star GA0940:00516552 with event index number of 2116834
Geocentric closest approach at 2026/12/26 10:51:00 UTC
J2000 position of star is 04:52:08.3 +04:26:55
Equinox of date position of star is 04:53:24.2 +04:29:14
Stellar brightness G=15.2,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 59 degrees from the moon.
Moon is 92% illuminated.
Apparent brightness V=22.9
[RECON map]
Object is 45.0 AU from the Sun
and 44.1 AU from the Earth.
Apparent velocity is 23.6
km/sec on the sky relative to the star, or,
2.7 arcsec/hr.
The 1-sigma error in the time of the event is 174 seconds.
The 1-sigma cross-track error in the shadow position is
1902 km.
The sky-plane scale is
32015.4 km/arcsec.
The object has an absolute magnitude Hv=6.3
Diameter=346.7 km assuming a 5% albedo -- 14.1 sec chord
Diameter=141.6 km assuming a 30% albedo -- 5.8 sec chord
Dynamical classification is SCATNEAR
Star training set for 525815, (2026/12/26 10:51UT) Object RA Dec mag sep mel Aldebaran 04:37:28.3 +16:33:42 0.8 12.70 59 Bellatrix 05:26:34.8 +06:22:19 1.6 8.43 50 3Pi 4Ori 04:52:38.7 +05:38:57 3.7 1.18 58 PPM 148046 04:52:05.8 +04:20:17 8.0 0.40 59 PPM 148084 04:53:21.0 +04:33:52 9.0 0.09 59 525815 04:53:34.0 +04:29:31 15.2 58 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
5.2 sigma about the mid-time.
The median site spacing is 28.1 km
RECON observability=0.7 and success probability=5.2%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 10:48:25 | -38.9 | Dark | Up | 10.8 | 263.3 | Really Low | 10:33:25 - 11:03:25 | -1909 |
| Kamloops | 10:48:34 | -47.9 | Dark | Up | 19.9 | 251.9 | Really Low | 10:33:34 - 11:03:34 | -2093 |
| Kelowna | 10:48:31 | -47.7 | Dark | Up | 19.6 | 252.9 | Really Low | 10:33:31 - 11:03:31 | -2145 |
| Peachland | 10:48:31 | -47.9 | Dark | Up | 19.8 | 252.7 | Really Low | 10:33:31 - 11:03:31 | -2154 |
| Summerland | 10:48:30 | -47.9 | Dark | Up | 19.8 | 252.8 | Really Low | 10:33:30 - 11:03:30 | -2165 |
| Penticton | 10:48:30 | -47.8 | Dark | Up | 19.7 | 252.9 | Really Low | 10:33:30 - 11:03:30 | -2169 |
| Oliver | 10:48:28 | -48.0 | Dark | Up | 19.8 | 253.0 | Really Low | 10:33:28 - 11:03:28 | -2194 |
| Anarchist Mountain Observatory | 10:48:27 | -47.9 | Dark | Up | 19.8 | 253.3 | Really Low | 10:33:27 - 11:03:27 | -2205 |
| Okanogan | 10:48:25 | -48.3 | Dark | Up | 20.1 | 253.3 | Low | 10:33:25 - 11:03:25 | -2254 |
| Victoria | 10:48:32 | -50.6 | Dark | Up | 22.5 | 250.1 | Low | 10:33:32 - 11:03:32 | -2267 |
| Brewster | 10:48:25 | -48.5 | Dark | Up | 20.3 | 253.2 | Low | 10:33:25 - 11:03:25 | -2275 |
| Manson/Chelan | 10:48:25 | -48.8 | Dark | Up | 20.6 | 253.0 | Low | 10:33:25 - 11:03:25 | -2293 |
| Wenatchee | 10:48:23 | -49.1 | Dark | Up | 20.9 | 253.0 | Low | 10:33:23 - 11:03:23 | -2330 |
| Ellensburg | 10:48:22 | -49.4 | Dark | Up | 21.1 | 253.0 | Low | 10:33:22 - 11:03:22 | -2362 |
| Yakima | 10:48:21 | -49.6 | Dark | Up | 21.3 | 253.1 | Low | 10:33:21 - 11:03:21 | -2393 |
| Toppenish/White Swan | 10:48:20 | -49.5 | Dark | Up | 21.2 | 253.3 | Low | 10:33:20 - 11:03:20 | -2408 |
| PNWRO | 10:48:17 | -48.7 | Dark | Up | 20.3 | 254.7 | Low | 10:33:17 - 11:03:17 | -2426 |
| The Dalles | 10:48:19 | -50.3 | Dark | Up | 22.0 | 253.0 | Low | 10:33:19 - 11:03:19 | -2474 |
| Maupin | 10:48:18 | -50.4 | Dark | Up | 22.0 | 253.2 | Low | 10:33:18 - 11:03:18 | -2505 |
| Sisters | 10:48:16 | -51.0 | Dark | Up | 22.6 | 253.2 | Low | 10:33:16 - 11:03:16 | -2578 |
| Bend | 10:48:15 | -50.9 | Dark | Up | 22.5 | 253.5 | Low | 10:33:15 - 11:03:15 | -2595 |
| Oregon Observatory | 10:48:14 | -51.1 | Dark | Up | 22.7 | 253.4 | Low | 10:33:14 - 11:03:14 | -2609 |
| Chiloquin | 10:48:11 | -51.8 | Dark | Up | 23.3 | 253.7 | Low | 10:33:11 - 11:03:11 | -2719 |
| Klamath Falls | 10:48:10 | -51.8 | Dark | Up | 23.4 | 253.9 | Low | 10:33:10 - 11:03:10 | -2746 |
| Dunrhomin | 10:47:44 | -39.9 | Dark | Up | 11.5 | 266.1 | Really Low | 10:32:44 - 11:02:44 | -2788 |
| Cedarville | 10:48:05 | -50.9 | Dark | Up | 22.4 | 255.3 | Low | 10:33:05 - 11:03:05 | -2792 |
| Nikitin | 10:47:44 | -39.9 | Dark | Up | 11.5 | 266.1 | Really Low | 10:32:44 - 11:02:44 | -2803 |
| CU-SBO | 10:47:43 | -40.0 | Dark | Up | 11.6 | 266.1 | Really Low | 10:32:43 - 11:02:43 | -2809 |
| Fall River/Burney | 10:48:06 | -51.9 | Dark | Up | 23.4 | 254.6 | Low | 10:33:06 - 11:03:06 | -2841 |
| Gimple | 10:48:03 | -51.7 | Dark | Up | 23.3 | 255.4 | Low | 10:33:03 - 11:03:03 | -2914 |
| Greenville | 10:48:03 | -51.8 | Dark | Up | 23.3 | 255.3 | Low | 10:33:03 - 11:03:03 | -2914 |
| Quincy | 10:48:02 | -51.8 | Dark | Up | 23.4 | 255.4 | Low | 10:33:02 - 11:03:02 | -2931 |
| Portola | 10:48:01 | -51.5 | Dark | Up | 23.1 | 255.8 | Low | 10:33:01 - 11:03:01 | -2938 |
| Reno | 10:47:59 | -51.1 | Dark | Up | 22.7 | 256.4 | Low | 10:32:59 - 11:02:59 | -2956 |
| Carson City | 10:47:58 | -51.1 | Dark | Up | 22.7 | 256.5 | Low | 10:32:58 - 11:02:58 | -2986 |
| Yerington | 10:47:56 | -50.7 | Dark | Up | 22.3 | 257.0 | Low | 10:32:56 - 11:02:56 | -2998 |
| Gardnerville | 10:47:57 | -51.2 | Dark | Up | 22.8 | 256.7 | Low | 10:32:57 - 11:02:57 | -3007 |
| Hawthorne | 10:47:54 | -50.4 | Dark | Up | 22.0 | 257.6 | Low | 10:32:54 - 11:02:54 | -3034 |
| Lee Vining | 10:47:53 | -50.9 | Dark | Up | 22.5 | 257.5 | Low | 10:32:53 - 11:02:53 | -3087 |
| Bishop | 10:47:51 | -50.4 | Dark | Up | 22.1 | 258.2 | Low | 10:32:51 - 11:02:51 | -3134 |
| Beatty | 10:47:47 | -49.2 | Dark | Up | 20.9 | 259.5 | Low | 10:32:47 - 11:02:47 | -3162 |
| Patrick | 10:47:39 | -47.0 | Dark | Up | 18.9 | 261.8 | Really Low | 10:32:39 - 11:02:39 | -3271 |
| Laughlin/Bullhead City | 10:47:39 | -47.6 | Dark | Up | 19.5 | 261.5 | Really Low | 10:32:39 - 11:02:39 | -3299 |
| Lake Havasu City | 10:47:37 | -47.4 | Dark | Up | 19.4 | 261.8 | Really Low | 10:32:37 - 11:02:37 | -3358 |
| George/Scottsdale | 10:47:32 | -45.4 | Dark | Up | 17.5 | 263.6 | Really Low | 10:32:32 - 11:02:32 | -3409 |
| Wildwood | 10:47:43 | -50.9 | Dark | Up | 22.9 | 259.4 | Low | 10:32:43 - 11:02:43 | -3429 |
| Idyllwild | 10:47:39 | -49.4 | Dark | Up | 21.4 | 260.7 | Low | 10:32:39 - 11:02:39 | -3446 |
| Calipatria | 10:47:35 | -48.5 | Dark | Up | 20.6 | 261.6 | Low | 10:32:35 - 11:02:35 | -3493 |
| Yuma | 10:47:33 | -47.7 | Dark | Up | 19.9 | 262.3 | Really Low | 10:32:33 - 11:02:33 | -3525 |
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 525815, (2026/12/26 10:51UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 12.70 59 Bellatrix 05:25:07.8 +06:20:58 1.6 8.43 50 3Pi 4Ori 04:51:12.4 +05:36:18 3.7 1.18 58 PPM 148046 04:50:40.2 +04:17:37 8.0 0.40 59 PPM 148084 04:51:55.3 +04:31:16 9.0 0.09 59 525815 04:52:08.3 +04:26:55 15.2 59 Positions are for J2000
Event circumstances last updated at 2023/11/23 04:17:17 UT
Marc W. Buie, Southwest Research Institute