Event between 13MR18 and star GA0980:04817942 with event index number of 2068959
Geocentric closest approach at 2025/08/01 08:21:40 UTC
J2000 position of star is 17:19:00.3 +08:49:37
Equinox of date position of star is 17:20:05.8 +08:48:17
Stellar brightness G=14.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 53 degrees from the moon.
Moon is 48% illuminated.
TNO apparent brightness V=22.3
[RECON map]
TNO is 26.6 AU from the Sun
and 26.1 AU from the Earth.
The TNO is moving 16.8
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 159 seconds.
The 1-sigma cross-track error in the shadow position is
1869 km.
The sky-plane scale is
18901.8 km/arcsec.
The TNO has an absolute magnitude Hv=7.9
Diameter=158.5 km assuming a 5% albedo -- 9.5 sec chord
Diameter=64.7 km assuming a 30% albedo -- 3.9 sec chord
Dynamical classification is 3:2E+6:4II
Star training set for 13MR18, (2025/08/01 08:21UT) Object RA Dec mag sep mel Vega 18:37:48.3 +38:48:31 0.0 34.69 83 Rasalhague 17:36:07.4 +12:32:37 2.1 5.41 58 PPM 163642 17:12:59.3 +07:51:56 6.3 2.02 51 PPM 163833 17:21:24.7 +09:26:06 8.4 0.70 53 PPM 163782 17:19:10.9 +09:07:26 10.0 0.41 53 PPM 163813 17:20:29.6 +08:48:07 10.2 0.07 53 13MR18 17:20:13.7 +08:48:07 14.8 53 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 31.0 km
RECON observability=1.0 and success probability=8.5%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kamloops | 08:16:18 | -21.4 | Dark | Down | 29.0 | 246.4 | Low | 08:02:32 - 08:30:04 | -3282 |
| Sleaford | 08:15:53 | -18.5 | Dark | Down | 20.1 | 258.2 | Low | 08:02:07 - 08:29:39 | -3349 |
| Kelowna | 08:16:16 | -22.2 | Dark | Down | 28.8 | 247.6 | Low | 08:02:30 - 08:30:02 | -3385 |
| Peachland | 08:16:16 | -22.3 | Dark | Down | 29.1 | 247.4 | Low | 08:02:30 - 08:30:02 | -3390 |
| Summerland | 08:16:16 | -22.4 | Dark | Down | 29.1 | 247.5 | Low | 08:02:30 - 08:30:02 | -3408 |
| Penticton | 08:16:16 | -22.5 | Dark | Down | 29.0 | 247.7 | Low | 08:02:30 - 08:30:02 | -3417 |
| Victoria | 08:16:25 | -23.6 | Dark | Down | 31.7 | 244.7 | Up | 08:02:39 - 08:30:11 | -3437 |
| Oliver | 08:16:15 | -22.9 | Dark | Down | 29.1 | 247.9 | Low | 08:02:29 - 08:30:01 | -3454 |
| Anarchist Mountain Observatory | 08:16:15 | -23.0 | Dark | Down | 29.1 | 248.1 | Low | 08:02:29 - 08:30:01 | -3476 |
| Tonasket | 08:16:16 | -23.3 | Dark | Down | 29.3 | 248.2 | Low | 08:02:30 - 08:30:02 | -3507 |
| Okanogan | 08:16:15 | -23.7 | Dark | Down | 29.5 | 248.3 | Low | 08:02:29 - 08:30:01 | -3539 |
| Brewster | 08:16:16 | -23.9 | Dark | Down | 29.7 | 248.2 | Low | 08:02:30 - 08:30:02 | -3563 |
| Manson/Chelan | 08:16:17 | -24.2 | Dark | Down | 30.0 | 248.0 | Low | 08:02:31 - 08:30:03 | -3577 |
| Wenatchee | 08:16:17 | -24.6 | Dark | Down | 30.3 | 248.1 | Up | 08:02:31 - 08:30:03 | -3624 |
| Ellensburg | 08:16:17 | -25.1 | Dark | Down | 30.6 | 248.1 | Up | 08:02:31 - 08:30:03 | -3662 |
| Yakima | 08:16:18 | -25.5 | Dark | Down | 30.7 | 248.4 | Up | 08:02:32 - 08:30:04 | -3704 |
| Toppenish/White Swan | 08:16:20 | -25.7 | Dark | Down | 30.7 | 248.6 | Up | 08:02:34 - 08:30:06 | -3731 |
| Goldendale | 08:16:19 | -26.2 | Dark | Down | 31.2 | 248.6 | Up | 08:02:33 - 08:30:05 | -3780 |
| The Dalles | 08:16:20 | -26.5 | Dark | Down | 31.5 | 248.4 | Up | 08:02:34 - 08:30:06 | -3795 |
| PNWRO | 08:16:14 | -26.0 | Dark | Down | 29.9 | 250.1 | Low | 08:02:28 - 08:30:00 | -3803 |
| Maupin | 08:16:20 | -26.9 | Dark | Down | 31.6 | 248.7 | Up | 08:02:34 - 08:30:06 | -3841 |
| Sisters | 08:16:22 | -27.8 | Dark | Down | 32.2 | 248.8 | Up | 08:02:36 - 08:30:08 | -3922 |
| Bend | 08:16:20 | -28.0 | Dark | Down | 32.1 | 249.2 | Up | 08:02:34 - 08:30:06 | -3954 |
| Oregon Observatory | 08:16:21 | -28.2 | Dark | Down | 32.3 | 249.2 | Up | 08:02:35 - 08:30:07 | -3969 |
| North Lake | 08:16:20 | -28.8 | Dark | Down | 32.1 | 250.0 | Up | 08:02:34 - 08:30:06 | -4049 |
| Chiloquin | 08:16:23 | -29.5 | Dark | Down | 33.0 | 249.6 | Up | 08:02:37 - 08:30:09 | -4097 |
| Klamath Falls | 08:16:23 | -29.9 | Dark | Down | 33.1 | 249.9 | Up | 08:02:37 - 08:30:09 | -4135 |
| Lakeview | 08:16:19 | -29.9 | Dark | Down | 32.1 | 251.1 | Up | 08:02:33 - 08:30:05 | -4175 |
| Cedarville | 08:16:20 | -30.5 | Dark | Down | 32.2 | 251.6 | Up | 08:02:34 - 08:30:06 | -4249 |
| Fall River/Burney | 08:16:23 | -31.0 | Dark | Down | 33.2 | 250.9 | Up | 08:02:37 - 08:30:09 | -4270 |
| Susanville | 08:16:21 | -31.6 | Dark | Down | 32.9 | 251.9 | Up | 08:02:35 - 08:30:07 | -4355 |
| Greenville | 08:16:23 | -31.9 | Dark | Down | 33.2 | 251.8 | Up | 08:02:37 - 08:30:09 | -4377 |
| Gimple | 08:16:25 | -31.9 | Dark | Down | 33.1 | 251.9 | Up | 08:02:39 - 08:30:11 | -4379 |
| Quincy | 08:16:25 | -32.1 | Dark | Down | 33.2 | 252.0 | Up | 08:02:39 - 08:30:11 | -4399 |
| Portola | 08:16:22 | -32.2 | Dark | Down | 32.9 | 252.4 | Up | 08:02:36 - 08:30:08 | -4424 |
| Reno | 08:16:20 | -32.5 | Dark | Down | 32.5 | 253.1 | Up | 08:02:34 - 08:30:06 | -4468 |
| Carson City | 08:16:20 | -32.8 | Dark | Down | 32.6 | 253.3 | Up | 08:02:34 - 08:30:06 | -4507 |
| Gardnerville | 08:16:20 | -33.1 | Dark | Down | 32.7 | 253.5 | Up | 08:02:34 - 08:30:06 | -4534 |
| Yerington | 08:16:19 | -33.0 | Dark | Down | 32.2 | 253.9 | Up | 08:02:33 - 08:30:05 | -4543 |
| Hawthorne | 08:16:18 | -33.4 | Dark | Down | 31.9 | 254.6 | Up | 08:02:32 - 08:30:04 | -4606 |
| Dunrhomin | 08:15:47 | -29.7 | Dark | Down | 21.5 | 263.3 | Low | 08:02:01 - 08:29:33 | -4653 |
| Lee Vining | 08:16:20 | -34.0 | Dark | Down | 32.5 | 254.6 | Up | 08:02:34 - 08:30:06 | -4654 |
| CU-SBO | 08:15:49 | -29.9 | Dark | Down | 21.6 | 263.3 | Low | 08:02:03 - 08:29:35 | -4679 |
| Tonopah | 08:16:17 | -33.8 | Dark | Down | 31.0 | 255.9 | Up | 08:02:31 - 08:30:03 | -4689 |
| Bishop | 08:16:18 | -34.6 | Dark | Down | 32.1 | 255.5 | Up | 08:02:32 - 08:30:04 | -4736 |
| Beatty | 08:16:15 | -34.9 | Dark | Down | 30.9 | 256.9 | Up | 08:02:29 - 08:30:01 | -4823 |
| Indian Springs | 08:16:13 | -35.1 | Dark | Down | 30.2 | 257.9 | Up | 08:02:27 - 08:29:59 | -4882 |
| Henderson | 08:16:11 | -35.6 | Dark | Down | 29.7 | 258.7 | Low | 08:02:25 - 08:29:57 | -4955 |
| Patrick | 08:16:11 | -36.1 | Dark | Down | 28.9 | 259.7 | Low | 08:02:25 - 08:29:57 | -5046 |
| Laughlin/Bullhead City | 08:16:12 | -36.4 | Dark | Down | 29.6 | 259.4 | Low | 08:02:26 - 08:29:58 | -5057 |
| Kingman/Dolan Springs | 08:16:10 | -36.3 | Dark | Down | 29.1 | 259.7 | Low | 08:02:24 - 08:29:56 | -5066 |
| Wildwood | 08:16:23 | -37.9 | Dark | Down | 33.0 | 257.4 | Up | 08:02:37 - 08:30:09 | -5079 |
| Mohave Valley | 08:16:11 | -36.7 | Dark | Down | 29.6 | 259.6 | Low | 08:02:25 - 08:29:57 | -5087 |
| Lake Havasu City | 08:16:12 | -37.0 | Dark | Down | 29.5 | 260.0 | Low | 08:02:26 - 08:29:58 | -5135 |
| Idyllwild | 08:16:18 | -38.1 | Dark | Down | 31.5 | 258.9 | Up | 08:02:32 - 08:30:04 | -5163 |
| Parker | 08:16:12 | -37.4 | Dark | Down | 29.5 | 260.2 | Low | 08:02:26 - 08:29:58 | -5173 |
| Calipatria | 08:16:16 | -38.5 | Dark | Down | 30.7 | 260.0 | Up | 08:02:30 - 08:30:02 | -5256 |
| George/Scottsdale | 08:16:06 | -37.4 | Dark | Down | 27.6 | 261.9 | Low | 08:02:20 - 08:29:52 | -5268 |
| Yuma | 08:16:14 | -38.8 | Dark | Down | 30.0 | 260.8 | Up | 08:02:28 - 08:30:00 | -5322 |
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 13MR18, (2025/08/01 08:21UT) Object RA Dec mag sep mel Vega 18:36:56.7 +38:47:07 0.0 34.69 83 Rasalhague 17:34:56.3 +12:33:31 2.1 5.41 58 PPM 163642 17:11:45.3 +07:53:41 6.3 2.02 51 PPM 163833 17:20:11.6 +09:27:33 8.4 0.70 53 PPM 163782 17:17:57.7 +09:08:58 10.0 0.41 53 PPM 163813 17:19:16.2 +08:49:36 10.2 0.07 53 13MR18 17:19:00.3 +08:49:37 14.8 53 Positions are for J2000
Event circumstances last updated at 2022/10/27 03:16:16 UT
Marc W. Buie, Southwest Research Institute