Event between (523686) 14DB143 and star GA0880:08724610 with event index number of 1471753
Geocentric closest approach at 2025/08/25 06:20:31 UTC
J2000 position of star is 18:42:11.7 -01:35:47
Equinox of date position of star is 18:43:15.6 -01:34:31
Stellar brightness G=13.9,
use SENSEUP=64
Star is 105 degrees from the moon.
Moon is 4% illuminated.
TNO apparent brightness V=23.2
[RECON map]
TNO is 20.3 AU from the Sun
and 19.7 AU from the Earth.
The TNO is moving 14.2
km/sec on the sky relative to the star, or,
3.6 arcsec/hr.
The 1-sigma error in the time of the event is 165 seconds.
The 1-sigma cross-track error in the shadow position is
2148 km.
The sky-plane scale is
14273.8 km/arcsec.
The TNO has an absolute magnitude Hv=10.0
Diameter=91.2 km assuming a 5% albedo -- 4.3 sec chord
Diameter=37.2 km assuming a 30% albedo -- 1.7 sec chord
Dynamical classification is CENTAURR
Star training set for 523686, (2025/08/25 06:21UT) Object RA Dec mag sep mel Antares 16:30:59.1 -26:29:12 0.9 40.41 74 60Bet Oph 17:44:44.4 +04:33:30 2.8 15.91 90 5 Aql 18:47:48.0 -00:55:57 6.2 1.24 106 PPM 180411 18:44:37.8 -01:37:06 8.4 0.28 105 PPM 180409 18:44:19.5 -01:24:44 10.0 0.25 105 PPM 180407 18:44:12.1 -01:44:22 11.0 0.24 105 523686 18:43:31.5 -01:34:12 13.9 105 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 23.3 km
RECON observability=1.0 and success probability=10.0%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Victoria | 06:15:31 | -25.1 | Dark | Down | 35.8 | 209.7 | Up | 06:01:19 - 06:29:44 | 4890 |
| Clarence Fulton | 06:15:17 | -25.0 | Dark | Down | 33.0 | 213.7 | Up | 06:01:04 - 06:29:29 | 4859 |
| Peachland | 06:15:18 | -25.3 | Dark | Down | 33.6 | 213.4 | Up | 06:01:06 - 06:29:31 | 4838 |
| Kelowna | 06:15:17 | -25.3 | Dark | Down | 33.4 | 213.6 | Up | 06:01:05 - 06:29:30 | 4835 |
| Summerland | 06:15:18 | -25.5 | Dark | Down | 33.6 | 213.5 | Up | 06:01:06 - 06:29:31 | 4822 |
| Penticton | 06:15:15 | -25.6 | Dark | Down | 33.7 | 213.7 | Up | 06:01:03 - 06:29:28 | 4813 |
| Oliver | 06:15:19 | -25.9 | Dark | Down | 34.0 | 213.8 | Up | 06:01:06 - 06:29:31 | 4785 |
| Anarchist Mountain Observatory | 06:15:15 | -26.1 | Dark | Down | 34.0 | 214.1 | Up | 06:01:03 - 06:29:28 | 4763 |
| Tonasket | 06:15:17 | -26.3 | Dark | Down | 34.3 | 214.1 | Up | 06:01:05 - 06:29:30 | 4741 |
| Okanogan | 06:15:18 | -26.6 | Dark | Down | 34.6 | 214.1 | Up | 06:01:06 - 06:29:31 | 4720 |
| Brewster | 06:15:19 | -26.7 | Dark | Down | 34.9 | 214.0 | Up | 06:01:07 - 06:29:32 | 4707 |
| Manson/Chelan | 06:15:21 | -26.8 | Dark | Down | 35.3 | 213.6 | Up | 06:01:08 - 06:29:33 | 4705 |
| Entiat | 06:15:22 | -27.0 | Dark | Down | 35.5 | 213.6 | Up | 06:01:10 - 06:29:35 | 4691 |
| Wenatchee | 06:15:23 | -27.2 | Dark | Down | 35.7 | 213.6 | Up | 06:01:11 - 06:29:36 | 4674 |
| Ellensburg | 06:15:24 | -27.4 | Dark | Down | 36.1 | 213.6 | Up | 06:01:11 - 06:29:36 | 4650 |
| Yakima | 06:15:24 | -27.8 | Dark | Down | 36.5 | 213.7 | Up | 06:01:11 - 06:29:36 | 4618 |
| Toppenish/White Swan | 06:15:24 | -28.0 | Dark | Down | 36.6 | 214.0 | Up | 06:01:12 - 06:29:37 | 4593 |
| Goldendale | 06:15:26 | -28.4 | Dark | Down | 37.2 | 213.7 | Up | 06:01:13 - 06:29:38 | 4567 |
| The Dalles | 06:15:27 | -28.4 | Dark | Down | 37.5 | 213.4 | Up | 06:01:14 - 06:29:39 | 4564 |
| Pasco | 06:15:19 | -28.6 | Dark | Down | 36.2 | 215.5 | Up | 06:01:07 - 06:29:32 | 4530 |
| Maupin | 06:15:26 | -28.8 | Dark | Down | 37.8 | 213.7 | Up | 06:01:13 - 06:29:38 | 4525 |
| PNWRO | 06:15:18 | -28.9 | Dark | Down | 36.3 | 215.8 | Up | 06:01:06 - 06:29:31 | 4500 |
| Sisters | 06:15:31 | -29.4 | Dark | Down | 38.8 | 213.5 | Up | 06:01:19 - 06:29:44 | 4475 |
| Redmond | 06:15:29 | -29.6 | Dark | Down | 38.6 | 214.0 | Up | 06:01:16 - 06:29:41 | 4456 |
| Bend | 06:15:29 | -29.7 | Dark | Down | 38.9 | 213.9 | Up | 06:01:17 - 06:29:42 | 4444 |
| Oregon Observatory | 06:15:31 | -29.8 | Dark | Down | 39.1 | 213.9 | Up | 06:01:19 - 06:29:44 | 4436 |
| La Pine/Gilchrist | 06:15:31 | -29.9 | Dark | Down | 39.3 | 213.9 | Up | 06:01:19 - 06:29:44 | 4422 |
| North Lake | 06:15:30 | -30.5 | Dark | Down | 39.4 | 214.8 | Up | 06:01:17 - 06:29:42 | 4359 |
| Klamath Falls | 06:15:35 | -31.1 | Dark | Down | 40.6 | 214.3 | Up | 06:01:23 - 06:29:48 | 4314 |
| Paisley | 06:15:29 | -31.1 | Dark | Down | 39.7 | 215.5 | Up | 06:01:17 - 06:29:42 | 4297 |
| Lakeview | 06:15:29 | -31.6 | Dark | Down | 40.0 | 216.0 | Up | 06:01:16 - 06:29:41 | 4245 |
| Fall River/Burney | 06:15:36 | -32.2 | Dark | Down | 41.4 | 215.3 | Up | 06:01:23 - 06:29:48 | 4197 |
| Cedarville | 06:15:29 | -32.3 | Dark | Down | 40.4 | 216.5 | Up | 06:01:16 - 06:29:41 | 4182 |
| Susanville | 06:15:33 | -33.0 | Dark | Down | 41.6 | 216.5 | Up | 06:01:20 - 06:29:45 | 4109 |
| Greenville | 06:15:35 | -33.1 | Dark | Down | 41.9 | 216.3 | Up | 06:01:22 - 06:29:47 | 4100 |
| Gimple | 06:15:34 | -33.2 | Dark | Down | 41.9 | 216.4 | Up | 06:01:21 - 06:29:46 | 4095 |
| Quincy | 06:15:35 | -33.3 | Dark | Down | 42.1 | 216.4 | Up | 06:01:23 - 06:29:48 | 4082 |
| Portola | 06:15:33 | -33.6 | Dark | Down | 42.0 | 217.1 | Up | 06:01:20 - 06:29:45 | 4049 |
| Reno | 06:15:31 | -34.1 | Dark | Down | 41.9 | 218.0 | Up | 06:01:19 - 06:29:44 | 3996 |
| Carson City | 06:15:32 | -34.4 | Dark | Down | 42.1 | 218.2 | Up | 06:01:19 - 06:29:44 | 3964 |
| Gardnerville | 06:15:31 | -34.6 | Dark | Down | 42.3 | 218.4 | Up | 06:01:19 - 06:29:44 | 3940 |
| Yerington | 06:15:29 | -34.8 | Dark | Down | 42.0 | 219.0 | Up | 06:01:17 - 06:29:42 | 3917 |
| Hawthorne | 06:15:29 | -35.5 | Dark | Down | 42.1 | 219.9 | Up | 06:01:16 - 06:29:41 | 3851 |
| Lee Vining | 06:15:30 | -35.7 | Dark | Down | 42.8 | 219.7 | Up | 06:01:18 - 06:29:43 | 3825 |
| Tonopah | 06:15:23 | -36.4 | Dark | Down | 41.7 | 221.8 | Up | 06:01:11 - 06:29:36 | 3744 |
| Bishop | 06:15:29 | -36.5 | Dark | Down | 42.8 | 220.9 | Up | 06:01:17 - 06:29:42 | 3738 |
| CPSLO | 06:15:43 | -37.3 | Dark | Down | 45.6 | 219.6 | Up | 06:01:30 - 06:29:55 | 3666 |
| Beatty | 06:15:22 | -37.6 | Dark | Down | 42.3 | 223.0 | Up | 06:01:10 - 06:29:35 | 3618 |
| Indian Springs | 06:15:19 | -38.3 | Dark | Down | 42.0 | 224.4 | Up | 06:01:06 - 06:29:31 | 3538 |
| Henderson | 06:15:16 | -39.0 | Dark | Down | 42.0 | 225.5 | Up | 06:01:04 - 06:29:29 | 3457 |
| Wildwood | 06:15:36 | -39.2 | Dark | Down | 45.4 | 222.8 | Up | 06:01:24 - 06:29:49 | 3456 |
| Niwot | 06:14:33 | -38.0 | Dark | Down | 33.6 | 232.9 | Up | 06:00:21 - 06:28:46 | 3409 |
| SwRI | 06:14:35 | -38.1 | Dark | Down | 33.7 | 232.9 | Up | 06:00:22 - 06:28:47 | 3402 |
| Searchlight/Boulder City | 06:15:18 | -39.6 | Dark | Down | 42.3 | 226.0 | Up | 06:01:05 - 06:29:30 | 3401 |
| Laughlin/Bullhead City | 06:15:17 | -40.0 | Dark | Down | 42.3 | 226.5 | Up | 06:01:04 - 06:29:29 | 3357 |
| Patrick | 06:15:14 | -40.0 | Dark | Down | 41.7 | 227.1 | Up | 06:01:01 - 06:29:26 | 3347 |
| Kingman/Dolan Springs | 06:15:15 | -40.1 | Dark | Down | 42.0 | 227.1 | Up | 06:01:02 - 06:29:27 | 3335 |
| Mohave Valley | 06:15:17 | -40.2 | Dark | Down | 42.5 | 226.7 | Up | 06:01:05 - 06:29:30 | 3332 |
| Idyllwild | 06:15:29 | -40.4 | Dark | Down | 44.6 | 225.2 | Up | 06:01:16 - 06:29:41 | 3330 |
| DCO | 06:15:11 | -40.5 | Dark | Down | 41.5 | 228.1 | Up | 06:00:58 - 06:29:23 | 3285 |
| Lake Havasu City | 06:15:17 | -40.6 | Dark | Down | 42.6 | 227.3 | Up | 06:01:04 - 06:29:29 | 3283 |
| Parker | 06:15:18 | -41.0 | Dark | Down | 42.9 | 227.5 | Up | 06:01:05 - 06:29:30 | 3250 |
| Calipatria | 06:15:25 | -41.4 | Dark | Down | 44.3 | 226.9 | Up | 06:01:12 - 06:29:37 | 3216 |
| Blythe | 06:15:20 | -41.3 | Dark | Down | 43.4 | 227.6 | Up | 06:01:07 - 06:29:32 | 3216 |
| Yuma | 06:15:22 | -42.1 | Dark | Down | 44.0 | 228.2 | Up | 06:01:09 - 06:29:34 | 3132 |
| George/Scottsdale | 06:15:08 | -42.2 | Dark | Down | 41.6 | 230.4 | Up | 06:00:56 - 06:29:21 | 3094 |
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 523686, (2025/08/25 06:21UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 40.41 74 60Bet Oph 17:43:28.3 +04:34:06 2.8 15.91 90 5 Aql 18:46:28.6 -00:57:42 6.2 1.24 106 PPM 180411 18:43:18.0 -01:38:44 8.4 0.28 105 PPM 180409 18:42:59.8 -01:26:22 10.0 0.25 105 PPM 180407 18:42:52.2 -01:46:00 11.0 0.24 105 523686 18:42:11.7 -01:35:47 13.9 105 Positions are for J2000
Event circumstances last updated at 2020/07/19 00:25:40 UT
Marc W. Buie, Southwest Research Institute