Event between (552678) 10JG210 and star GA0820:08660494 with event index number of 2222816
Geocentric closest approach at 2025/07/21 07:07:06 UTC
J2000 position of star is 18:18:45.2 -06:07:02
Equinox of date position of star is 18:19:58.7 -06:06:24
Stellar brightness G=14.4,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 149 degrees from the moon.
Moon is 16% illuminated.
TNO apparent brightness V=21.1
[RECON map]
TNO is 17.9 AU from the Sun
and 17.0 AU from the Earth.
The TNO is moving 20.2
km/sec on the sky relative to the star, or,
5.9 arcsec/hr.
The 1-sigma error in the time of the event is 81 seconds.
The 1-sigma cross-track error in the shadow position is
1002 km.
The sky-plane scale is
12301.9 km/arcsec.
The TNO has an absolute magnitude Hv=8.5
Diameter=114.3 km assuming a 5% albedo -- 5.8 sec chord
Diameter=46.7 km assuming a 30% albedo -- 2.4 sec chord
Dynamical classification is CENTAURR
Star training set for 552678, (2025/07/21 07:06UT) Object RA Dec mag sep mel Antares 16:30:58.7 -26:29:11 0.9 33.03 177 60Bet Oph 17:44:44.2 +04:33:30 2.8 13.85 145 PPM 201730 18:26:05.1 -07:03:37 6.5 1.76 148 PPM 201612 18:20:40.3 -05:28:31 8.5 0.64 148 PPM 201598 18:19:55.2 -06:05:45 9.1 0.05 149 552678 18:20:07.4 -06:06:19 14.4 148 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
5.0 sigma about the mid-time.
The median site spacing is 21.6 km
RECON observability=1.0 and success probability=0.7%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kamloops | 07:05:01 | -17.6 | AT | Down | 32.5 | 192.4 | Up | 06:57:46 - 07:12:16 | 5011 |
| Victoria | 07:05:12 | -19.1 | Dark | Down | 35.0 | 189.1 | Up | 06:57:57 - 07:12:27 | 4955 |
| Peachland | 07:04:58 | -18.6 | Dark | Down | 33.3 | 193.2 | Up | 06:57:43 - 07:12:13 | 4937 |
| Kelowna | 07:04:58 | -18.5 | Dark | Down | 33.2 | 193.6 | Up | 06:57:43 - 07:12:13 | 4936 |
| Summerland | 07:04:59 | -18.7 | Dark | Down | 33.4 | 193.4 | Up | 06:57:44 - 07:12:14 | 4925 |
| Penticton | 07:04:59 | -18.8 | Dark | Down | 33.5 | 193.5 | Up | 06:57:44 - 07:12:14 | 4918 |
| Oliver | 07:04:59 | -19.2 | Dark | Down | 33.8 | 193.6 | Up | 06:57:44 - 07:12:14 | 4895 |
| Anarchist Mountain Observatory | 07:04:58 | -19.4 | Dark | Down | 34.0 | 193.8 | Up | 06:57:43 - 07:12:13 | 4879 |
| Tonasket | 07:04:57 | -19.6 | Dark | Down | 34.3 | 193.8 | Up | 06:57:42 - 07:12:12 | 4860 |
| Okanogan | 07:04:59 | -19.9 | Dark | Down | 34.6 | 193.7 | Up | 06:57:44 - 07:12:14 | 4842 |
| Brewster | 07:05:00 | -20.2 | Dark | Down | 34.9 | 193.5 | Up | 06:57:45 - 07:12:15 | 4829 |
| Manson/Chelan | 07:05:01 | -20.3 | Dark | Down | 35.2 | 193.1 | Up | 06:57:46 - 07:12:16 | 4826 |
| Wenatchee | 07:05:02 | -20.7 | Dark | Down | 35.7 | 192.9 | Up | 06:57:47 - 07:12:17 | 4799 |
| Ellensburg | 07:05:03 | -21.1 | Dark | Down | 36.1 | 192.8 | Up | 06:57:48 - 07:12:18 | 4777 |
| Yakima | 07:05:03 | -21.5 | Dark | Down | 36.5 | 192.8 | Up | 06:57:48 - 07:12:18 | 4750 |
| Sleaford | 07:04:17 | -17.5 | AT | Up | 28.1 | 208.2 | Low | 06:57:02 - 07:11:32 | 4736 |
| Toppenish/White Swan | 07:05:03 | -21.7 | Dark | Down | 36.7 | 193.0 | Up | 06:57:48 - 07:12:18 | 4730 |
| Goldendale | 07:05:04 | -22.2 | Dark | Down | 37.3 | 192.6 | Up | 06:57:49 - 07:12:19 | 4704 |
| The Dalles | 07:05:06 | -22.3 | Dark | Down | 37.6 | 192.2 | Up | 06:57:51 - 07:12:21 | 4699 |
| Maupin | 07:05:06 | -22.7 | Dark | Down | 38.0 | 192.4 | Up | 06:57:51 - 07:12:21 | 4667 |
| PNWRO | 07:04:58 | -22.3 | Dark | Down | 36.8 | 194.9 | Up | 06:57:43 - 07:12:13 | 4663 |
| Sisters | 07:05:08 | -23.5 | Dark | Down | 38.9 | 191.9 | Up | 06:57:53 - 07:12:23 | 4620 |
| Bend | 07:05:07 | -23.8 | Dark | Down | 39.1 | 192.3 | Up | 06:57:52 - 07:12:22 | 4595 |
| Oregon Observatory | 07:05:08 | -23.9 | Dark | Down | 39.3 | 192.2 | Up | 06:57:53 - 07:12:23 | 4587 |
| North Lake | 07:05:07 | -24.6 | Dark | Down | 39.8 | 193.0 | Up | 06:57:52 - 07:12:22 | 4525 |
| Chiloquin | 07:05:11 | -25.1 | Dark | Down | 40.6 | 191.9 | Up | 06:57:56 - 07:12:26 | 4505 |
| Klamath Falls | 07:05:10 | -25.4 | Dark | Down | 40.9 | 192.1 | Up | 06:57:55 - 07:12:25 | 4477 |
| Lakeview | 07:05:05 | -25.8 | Dark | Down | 40.8 | 193.9 | Up | 06:57:50 - 07:12:20 | 4431 |
| Fall River/Burney | 07:05:10 | -26.6 | Dark | Down | 42.0 | 192.8 | Up | 06:57:55 - 07:12:25 | 4378 |
| Cedarville | 07:05:05 | -26.4 | Dark | Down | 41.4 | 194.3 | Up | 06:57:50 - 07:12:20 | 4377 |
| Susanville | 07:05:08 | -27.4 | Dark | Down | 42.5 | 193.9 | Up | 06:57:53 - 07:12:23 | 4308 |
| Greenville | 07:05:09 | -27.6 | Dark | Down | 42.8 | 193.6 | Up | 06:57:54 - 07:12:24 | 4296 |
| Gimple | 07:05:08 | -27.6 | Dark | Down | 42.8 | 193.7 | Up | 06:57:53 - 07:12:23 | 4293 |
| Quincy | 07:05:09 | -27.8 | Dark | Down | 43.0 | 193.6 | Up | 06:57:54 - 07:12:24 | 4280 |
| Portola | 07:05:07 | -28.0 | Dark | Down | 43.1 | 194.3 | Up | 06:57:52 - 07:12:22 | 4256 |
| Reno | 07:05:05 | -28.4 | Dark | Down | 43.2 | 195.2 | Up | 06:57:50 - 07:12:20 | 4215 |
| Carson City | 07:05:04 | -28.8 | Dark | Down | 43.5 | 195.3 | Up | 06:57:49 - 07:12:19 | 4187 |
| Gardnerville | 07:05:05 | -29.0 | Dark | Down | 43.8 | 195.4 | Up | 06:57:50 - 07:12:20 | 4166 |
| Yerington | 07:05:03 | -29.1 | Dark | Down | 43.6 | 196.2 | Up | 06:57:48 - 07:12:18 | 4151 |
| Hawthorne | 07:05:01 | -29.6 | Dark | Down | 43.9 | 197.0 | Up | 06:57:46 - 07:12:16 | 4098 |
| Lee Vining | 07:05:03 | -30.1 | Dark | Down | 44.6 | 196.5 | Up | 06:57:48 - 07:12:18 | 4069 |
| Tonopah | 07:04:56 | -30.4 | Dark | Down | 44.0 | 199.0 | Up | 06:57:41 - 07:12:11 | 4016 |
| Bishop | 07:05:01 | -30.8 | Dark | Down | 45.0 | 197.7 | Up | 06:57:46 - 07:12:16 | 3997 |
| Beatty | 07:04:55 | -31.6 | Dark | Down | 45.0 | 200.0 | Up | 06:57:40 - 07:12:10 | 3907 |
| Indian Springs | 07:04:51 | -32.1 | Dark | Down | 45.0 | 201.6 | Up | 06:57:36 - 07:12:06 | 3845 |
| Dunrhomin | 07:04:10 | -29.3 | Dark | Down | 38.0 | 212.9 | Up | 06:56:55 - 07:11:25 | 3815 |
| CU-SBO | 07:04:12 | -29.6 | Dark | Down | 38.3 | 212.9 | Up | 06:56:57 - 07:11:27 | 3798 |
| Henderson | 07:04:49 | -32.7 | Dark | Down | 45.3 | 202.7 | Up | 06:57:34 - 07:12:04 | 3777 |
| Wildwood | 07:05:04 | -33.9 | Dark | Down | 48.1 | 198.5 | Up | 06:57:49 - 07:12:19 | 3735 |
| Laughlin/Bullhead City | 07:04:47 | -33.6 | Dark | Down | 46.0 | 203.6 | Up | 06:57:32 - 07:12:02 | 3690 |
| Patrick | 07:04:44 | -33.5 | Dark | Down | 45.5 | 204.4 | Up | 06:57:29 - 07:11:59 | 3688 |
| Kingman/Dolan Springs | 07:04:45 | -33.7 | Dark | Down | 45.8 | 204.3 | Up | 06:57:30 - 07:12:00 | 3675 |
| Mohave Valley | 07:04:47 | -33.9 | Dark | Down | 46.2 | 203.7 | Up | 06:57:32 - 07:12:02 | 3667 |
| Idyllwild | 07:04:57 | -34.7 | Dark | Down | 48.0 | 201.3 | Up | 06:57:42 - 07:12:12 | 3641 |
| Lake Havasu City | 07:04:47 | -34.3 | Dark | Down | 46.5 | 204.2 | Up | 06:57:32 - 07:12:02 | 3625 |
| Parker | 07:04:47 | -34.7 | Dark | Down | 46.8 | 204.4 | Up | 06:57:32 - 07:12:02 | 3594 |
| Calipatria | 07:04:53 | -35.5 | Dark | Down | 48.2 | 203.2 | Up | 06:57:38 - 07:12:08 | 3548 |
| Yuma | 07:04:49 | -36.0 | Dark | Down | 48.2 | 204.6 | Up | 06:57:34 - 07:12:04 | 3480 |
| George/Scottsdale | 07:04:38 | -35.4 | Dark | Down | 46.3 | 207.8 | Up | 06:57:23 - 07:11:53 | 3475 |
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 552678, (2025/07/21 07:06UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 33.03 177 60Bet Oph 17:43:28.3 +04:34:06 2.8 13.85 145 PPM 201730 18:24:42.3 -07:04:34 6.5 1.76 148 PPM 201612 18:19:18.4 -05:29:15 8.5 0.64 148 PPM 201598 18:18:33.0 -06:06:28 9.1 0.05 149 552678 18:18:45.2 -06:07:02 14.4 149 Positions are for J2000
Event circumstances last updated at 2022/10/27 03:13:36 UT
Marc W. Buie, Southwest Research Institute