Event between 11QY100 and star GA0880:02118204 with event index number of 1587120
Geocentric closest approach at 2025/02/20 04:16:28 UTC
J2000 position of star is 06:57:50.4 -01:33:04
Equinox of date position of star is 06:58:54.8 -01:34:51
Stellar brightness G=14.9,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 123 degrees from the moon.
Moon is 55% illuminated.
TNO apparent brightness V=21.4
[RECON map]
TNO is 20.3 AU from the Sun
and 19.7 AU from the Earth.
The TNO is moving 16.4
km/sec on the sky relative to the star, or,
4.1 arcsec/hr.
The 1-sigma error in the time of the event is 86 seconds.
The 1-sigma cross-track error in the shadow position is
1226 km.
The sky-plane scale is
14276.9 km/arcsec.
The TNO has an absolute magnitude Hv=8.2
Diameter=137.4 km assuming a 5% albedo -- 8.4 sec chord
Diameter=56.1 km assuming a 30% albedo -- 3.4 sec chord
Dynamical classification is CENTAURR
Star training set for 11QY100, (2025/02/20 04:16UT) Object RA Dec mag sep mel Sirius 06:46:15.5 -16:45:03 -1.5 15.49 117 2Bet CMa 06:23:48.4 -17:58:12 2.0 18.53 121 PPM 176522 06:55:41.3 -01:09:37 5.2 0.96 124 PPM 176560 06:58:44.0 -01:24:35 8.2 0.20 124 PPM 176570 06:59:49.4 -01:39:20 8.9 0.19 123 11QY100 06:59:06.8 -01:35:12 14.9 123 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 10.7 km
RECON observability=1.0 and success probability=0.1%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Dunrhomin | 04:19:10 | -41.5 | Dark | Down | 47.9 | 188.3 | Up | 04:11:29 - 04:26:51 | 6778 |
| Clarence Fulton | 04:20:29 | -28.8 | Dark | Down | 37.7 | 169.5 | Up | 04:12:48 - 04:28:10 | 6542 |
| Kelowna | 04:20:27 | -28.8 | Dark | Down | 38.1 | 169.2 | Up | 04:12:46 - 04:28:08 | 6512 |
| Peachland | 04:20:29 | -28.6 | Dark | Down | 38.2 | 168.9 | Up | 04:12:48 - 04:28:10 | 6490 |
| Penticton | 04:20:27 | -28.8 | Dark | Down | 38.4 | 169.1 | Up | 04:12:46 - 04:28:08 | 6488 |
| Summerland | 04:20:27 | -28.7 | Dark | Down | 38.3 | 168.9 | Up | 04:12:46 - 04:28:08 | 6486 |
| Anarchist Mountain Observatory | 04:20:25 | -29.1 | Dark | Down | 38.9 | 169.2 | Up | 04:12:44 - 04:28:06 | 6468 |
| Oliver | 04:20:29 | -28.9 | Dark | Down | 38.7 | 169.0 | Up | 04:12:48 - 04:28:10 | 6467 |
| Tonasket | 04:20:25 | -29.2 | Dark | Down | 39.2 | 169.1 | Up | 04:12:44 - 04:28:06 | 6445 |
| Okanogan | 04:20:24 | -29.2 | Dark | Down | 39.5 | 168.8 | Up | 04:12:43 - 04:28:05 | 6418 |
| Brewster | 04:20:25 | -29.1 | Dark | Down | 39.8 | 168.5 | Up | 04:12:44 - 04:28:06 | 6391 |
| Manson/Chelan | 04:20:25 | -28.9 | Dark | Down | 39.9 | 168.0 | Up | 04:12:44 - 04:28:06 | 6359 |
| Wenatchee | 04:20:24 | -29.0 | Dark | Down | 40.4 | 167.7 | Up | 04:12:43 - 04:28:05 | 6321 |
| Pasco | 04:20:17 | -30.1 | Dark | Down | 41.7 | 169.1 | Up | 04:12:36 - 04:27:58 | 6315 |
| PNWRO | 04:20:16 | -30.3 | Dark | Down | 41.9 | 169.3 | Up | 04:12:35 - 04:27:57 | 6313 |
| Ellensburg | 04:20:25 | -28.9 | Dark | Down | 40.7 | 167.4 | Up | 04:12:44 - 04:28:06 | 6284 |
| Yakima | 04:20:24 | -29.0 | Dark | Down | 41.1 | 167.3 | Up | 04:12:43 - 04:28:05 | 6258 |
| Toppenish/White Swan | 04:20:22 | -29.2 | Dark | Down | 41.4 | 167.4 | Up | 04:12:41 - 04:28:03 | 6254 |
| Victoria | 04:20:36 | -26.7 | Dark | Down | 38.8 | 164.1 | Up | 04:12:55 - 04:28:17 | 6228 |
| Goldendale | 04:20:22 | -29.1 | Dark | Down | 41.8 | 166.8 | Up | 04:12:41 - 04:28:03 | 6196 |
| The Dalles | 04:20:22 | -28.9 | Dark | Down | 42.0 | 166.2 | Up | 04:12:41 - 04:28:03 | 6161 |
| Maupin | 04:20:20 | -29.1 | Dark | Down | 42.4 | 166.3 | Up | 04:12:39 - 04:28:01 | 6141 |
| Redmond | 04:20:19 | -29.2 | Dark | Down | 43.3 | 165.9 | Up | 04:12:38 - 04:28:00 | 6078 |
| Sisters | 04:20:20 | -28.9 | Dark | Down | 43.2 | 165.4 | Up | 04:12:39 - 04:28:01 | 6057 |
| Bend | 04:20:18 | -29.2 | Dark | Down | 43.5 | 165.7 | Up | 04:12:37 - 04:27:59 | 6056 |
| Oregon Observatory | 04:20:18 | -29.1 | Dark | Down | 43.6 | 165.5 | Up | 04:12:37 - 04:27:59 | 6038 |
| North Lake | 04:20:15 | -29.6 | Dark | Down | 44.3 | 166.0 | Up | 04:12:34 - 04:27:56 | 6027 |
| La Pine/Gilchrist | 04:20:18 | -29.1 | Dark | Down | 43.8 | 165.3 | Up | 04:12:37 - 04:27:59 | 6021 |
| Paisley | 04:20:12 | -30.0 | Dark | Down | 44.9 | 166.4 | Up | 04:12:31 - 04:27:53 | 6012 |
| Lakeview | 04:20:10 | -30.3 | Dark | Down | 45.4 | 166.5 | Up | 04:12:29 - 04:27:51 | 5990 |
| George/Scottsdale | 04:19:10 | -38.6 | Dark | Down | 54.7 | 178.0 | Up | 04:11:29 - 04:26:51 | 5967 |
| Cedarville | 04:20:07 | -30.5 | Dark | Down | 46.1 | 166.6 | Up | 04:12:26 - 04:27:48 | 5957 |
| Patrick | 04:19:24 | -36.7 | Dark | Down | 52.9 | 174.8 | Up | 04:11:43 - 04:27:05 | 5947 |
| Chiloquin | 04:20:16 | -29.1 | Dark | Down | 44.8 | 164.6 | Up | 04:12:35 - 04:27:57 | 5927 |
| Kingman/Dolan Springs | 04:19:24 | -36.6 | Dark | Down | 53.1 | 174.5 | Up | 04:11:43 - 04:27:05 | 5920 |
| Henderson | 04:19:30 | -35.6 | Dark | Down | 52.2 | 173.1 | Up | 04:11:49 - 04:27:11 | 5916 |
| Klamath Falls | 04:20:15 | -29.2 | Dark | Down | 45.1 | 164.6 | Up | 04:12:34 - 04:27:56 | 5909 |
| Tonopah | 04:19:46 | -33.5 | Dark | Down | 50.0 | 170.1 | Up | 04:12:05 - 04:27:27 | 5908 |
| Indian Springs | 04:19:35 | -35.0 | Dark | Down | 51.6 | 172.1 | Up | 04:11:54 - 04:27:16 | 5907 |
| Laughlin/Bullhead City | 04:19:25 | -36.2 | Dark | Down | 53.1 | 173.6 | Up | 04:11:44 - 04:27:06 | 5884 |
| Mohave Valley | 04:19:25 | -36.2 | Dark | Down | 53.4 | 173.6 | Up | 04:11:44 - 04:27:06 | 5867 |
| Beatty | 04:19:40 | -34.1 | Dark | Down | 51.2 | 170.5 | Up | 04:11:59 - 04:27:21 | 5860 |
| Lake Havasu City | 04:19:23 | -36.5 | Dark | Down | 53.8 | 173.9 | Up | 04:11:42 - 04:27:04 | 5857 |
| Susanville | 04:20:05 | -30.4 | Dark | Down | 47.1 | 165.6 | Up | 04:12:24 - 04:27:46 | 5854 |
| Fall River/Burney | 04:20:10 | -29.8 | Dark | Down | 46.4 | 164.8 | Up | 04:12:29 - 04:27:51 | 5853 |
| Hawthorne | 04:19:52 | -32.3 | Dark | Down | 49.3 | 168.1 | Up | 04:12:11 - 04:27:33 | 5851 |
| Yerington | 04:19:56 | -31.8 | Dark | Down | 48.7 | 167.4 | Up | 04:12:15 - 04:27:37 | 5850 |
| Reno | 04:20:00 | -31.2 | Dark | Down | 48.1 | 166.6 | Up | 04:12:19 - 04:27:41 | 5847 |
| Parker | 04:19:20 | -36.6 | Dark | Down | 54.2 | 173.9 | Up | 04:11:39 - 04:27:01 | 5835 |
| Portola | 04:20:03 | -30.7 | Dark | Down | 47.7 | 165.7 | Up | 04:12:22 - 04:27:44 | 5825 |
| Carson City | 04:19:59 | -31.3 | Dark | Down | 48.5 | 166.5 | Up | 04:12:18 - 04:27:40 | 5824 |
| Gimple | 04:20:05 | -30.3 | Dark | Down | 47.3 | 165.2 | Up | 04:12:24 - 04:27:46 | 5823 |
| Greenville | 04:20:06 | -30.3 | Dark | Down | 47.3 | 165.1 | Up | 04:12:25 - 04:27:47 | 5818 |
| Gardnerville | 04:19:57 | -31.4 | Dark | Down | 48.7 | 166.5 | Up | 04:12:16 - 04:27:38 | 5810 |
| Quincy | 04:20:05 | -30.3 | Dark | Down | 47.5 | 165.1 | Up | 04:12:24 - 04:27:46 | 5805 |
| Bishop | 04:19:48 | -32.7 | Dark | Down | 50.5 | 168.1 | Up | 04:12:07 - 04:27:29 | 5788 |
| Lee Vining | 04:19:52 | -32.1 | Dark | Down | 49.8 | 167.2 | Up | 04:12:11 - 04:27:33 | 5783 |
| Blythe | 04:19:20 | -36.5 | Dark | Down | 54.6 | 173.3 | Up | 04:11:39 - 04:27:01 | 5780 |
| Yuma | 04:19:17 | -36.6 | Dark | Down | 55.6 | 173.1 | Up | 04:11:36 - 04:26:58 | 5715 |
| Calipatria | 04:19:22 | -35.8 | Dark | Down | 55.0 | 171.6 | Up | 04:11:41 - 04:27:03 | 5685 |
| Idyllwild | 04:19:29 | -34.7 | Dark | Down | 54.3 | 169.8 | Up | 04:11:48 - 04:27:10 | 5649 |
| Wildwood | 04:19:37 | -33.2 | Dark | Down | 53.6 | 166.8 | Up | 04:11:56 - 04:27:18 | 5550 |
| CPSLO | 04:19:49 | -31.3 | Dark | Down | 52.0 | 163.9 | Up | 04:12:08 - 04:27:30 | 5502 |
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 11QY100, (2025/02/20 04:16UT) Object RA Dec mag sep mel Sirius 06:45:08.1 -16:43:23 -1.5 15.49 117 2Bet CMa 06:22:42.0 -17:57:21 2.0 18.53 121 PPM 176522 06:54:24.6 -01:07:37 5.2 0.96 124 PPM 176560 06:57:27.5 -01:22:29 8.2 0.20 124 PPM 176570 06:58:33.0 -01:37:12 8.9 0.19 123 11QY100 06:57:50.4 -01:33:04 14.9 123 Positions are for J2000
Event circumstances last updated at 2021/03/02 22:26:35 UT
Marc W. Buie, Southwest Research Institute