Event between (469584) 03YW179 and star GA1040:03498475 with event index number of 2820392
Geocentric closest approach at 2023/03/20 10:36:38 UTC
J2000 position of star is 09:53:24.2 +14:46:45
Equinox of date position of star is 09:54:37.0 +14:40:23
Stellar brightness G=15.3,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 163 degrees from the moon.
Moon is 2% illuminated.
TNO apparent brightness V=22.7
[RECON map]
TNO is 36.4 AU from the Sun
and 35.5 AU from the Earth.
The TNO is moving 19.9
km/sec on the sky relative to the star, or,
2.8 arcsec/hr.
The 1-sigma error in the time of the event is 420 seconds.
The 1-sigma cross-track error in the shadow position is
3749 km.
The sky-plane scale is
25768.9 km/arcsec.
The TNO has an absolute magnitude Hv=7.0
Diameter=237.7 km assuming a 5% albedo -- 12.0 sec chord
Diameter=97.0 km assuming a 30% albedo -- 4.9 sec chord
Dynamical classification is 5:3EE
Star training set for 469584, (2023/03/20 10:37UT) Object RA Dec mag sep mel Regulus 10:09:36.4 +11:51:10 1.3 4.60 167 16Psi Leo 09:44:59.6 +13:54:52 5.3 2.46 161 PPM 126851 09:52:05.9 +14:00:41 8.5 0.90 163 PPM 126876 09:53:26.5 +14:22:22 9.0 0.42 163 469584 09:54:39.8 +14:40:08 15.3 164 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
2.1 sigma about the mid-time.
The median site spacing is 15.0 km
RECON observability=0.9 and success probability=3.1%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 10:34:47 | -23.0 | Dark | Down | 16.4 | 273.1 | Really Low | 10:19:47 - 10:49:47 | 7667 |
| Kamloops | 10:34:50 | -30.8 | Dark | Down | 25.5 | 262.2 | Low | 10:19:50 - 10:49:50 | 7289 |
| Kelowna | 10:34:45 | -31.0 | Dark | Down | 25.0 | 263.3 | Low | 10:19:45 - 10:49:45 | 7272 |
| Peachland | 10:34:44 | -31.2 | Dark | Down | 25.2 | 263.1 | Low | 10:19:44 - 10:49:44 | 7260 |
| Summerland | 10:34:44 | -31.3 | Dark | Down | 25.2 | 263.3 | Low | 10:19:44 - 10:49:44 | 7255 |
| Penticton | 10:34:44 | -31.3 | Dark | Down | 25.1 | 263.4 | Low | 10:19:44 - 10:49:44 | 7254 |
| Oliver | 10:34:41 | -31.5 | Dark | Down | 25.2 | 263.5 | Low | 10:19:41 - 10:49:41 | 7237 |
| Anarchist Mountain Observatory | 10:34:40 | -31.6 | Dark | Down | 25.0 | 263.8 | Low | 10:19:40 - 10:49:40 | 7234 |
| Tonasket | 10:34:38 | -31.8 | Dark | Down | 25.1 | 263.9 | Low | 10:19:38 - 10:49:38 | 7216 |
| Okanogan | 10:34:37 | -32.1 | Dark | Down | 25.3 | 263.9 | Low | 10:19:37 - 10:49:37 | 7195 |
| Brewster | 10:34:37 | -32.4 | Dark | Down | 25.4 | 263.9 | Low | 10:19:37 - 10:49:37 | 7176 |
| Manson/Chelan | 10:34:36 | -32.7 | Dark | Down | 25.7 | 263.7 | Low | 10:19:36 - 10:49:36 | 7156 |
| Wenatchee | 10:34:32 | -33.1 | Dark | Down | 25.9 | 263.8 | Low | 10:19:32 - 10:49:32 | 7127 |
| Dunrhomin | 10:33:49 | -28.6 | Dark | Down | 15.0 | 276.8 | Really Low | 10:18:49 - 10:48:49 | 7116 |
| Victoria | 10:34:42 | -33.7 | Dark | Down | 27.8 | 260.8 | Low | 10:19:42 - 10:49:42 | 7104 |
| CU-SBO | 10:33:47 | -28.7 | Dark | Down | 15.1 | 276.8 | Really Low | 10:18:47 - 10:48:47 | 7100 |
| Ellensburg | 10:34:31 | -33.5 | Dark | Down | 26.1 | 263.8 | Low | 10:19:31 - 10:49:31 | 7099 |
| PNWRO | 10:34:25 | -33.4 | Dark | Down | 25.1 | 265.5 | Low | 10:19:25 - 10:49:25 | 7089 |
| Yakima | 10:34:30 | -33.8 | Dark | Down | 26.1 | 264.0 | Low | 10:19:30 - 10:49:30 | 7077 |
| Toppenish/White Swan | 10:34:28 | -33.9 | Dark | Down | 26.0 | 264.2 | Low | 10:19:28 - 10:49:28 | 7070 |
| Goldendale | 10:34:26 | -34.5 | Dark | Down | 26.4 | 264.1 | Low | 10:19:26 - 10:49:26 | 7028 |
| The Dalles | 10:34:25 | -34.9 | Dark | Down | 26.7 | 264.0 | Low | 10:19:25 - 10:49:25 | 7005 |
| Maupin | 10:34:23 | -35.1 | Dark | Down | 26.7 | 264.2 | Low | 10:19:23 - 10:49:23 | 6985 |
| Sisters | 10:34:19 | -36.0 | Dark | Down | 27.1 | 264.3 | Low | 10:19:19 - 10:49:19 | 6921 |
| Bend | 10:34:18 | -36.0 | Dark | Down | 26.9 | 264.6 | Low | 10:19:18 - 10:49:18 | 6915 |
| Oregon Observatory | 10:34:18 | -36.2 | Dark | Down | 27.1 | 264.6 | Low | 10:19:18 - 10:49:18 | 6901 |
| North Lake | 10:34:13 | -36.4 | Dark | Down | 26.7 | 265.3 | Low | 10:19:13 - 10:49:13 | 6878 |
| Lakeview | 10:34:08 | -36.8 | Dark | Down | 26.4 | 266.2 | Low | 10:19:08 - 10:49:08 | 6830 |
| Chiloquin | 10:34:12 | -37.4 | Dark | Down | 27.5 | 265.0 | Low | 10:19:12 - 10:49:12 | 6810 |
| Cedarville | 10:34:05 | -37.2 | Dark | Down | 26.3 | 266.7 | Low | 10:19:05 - 10:49:05 | 6795 |
| Klamath Falls | 10:34:10 | -37.6 | Dark | Down | 27.5 | 265.2 | Low | 10:19:10 - 10:49:10 | 6792 |
| Fall River/Burney | 10:34:04 | -38.2 | Dark | Down | 27.3 | 266.1 | Low | 10:19:04 - 10:49:04 | 6729 |
| Susanville | 10:34:01 | -38.2 | Dark | Down | 26.8 | 266.9 | Low | 10:19:01 - 10:49:01 | 6712 |
| Gimple | 10:34:00 | -38.5 | Dark | Down | 27.0 | 266.9 | Low | 10:19:00 - 10:49:00 | 6688 |
| Greenville | 10:33:59 | -38.5 | Dark | Down | 27.0 | 266.8 | Low | 10:18:59 - 10:48:59 | 6685 |
| Reno | 10:33:55 | -38.3 | Dark | Down | 26.2 | 267.8 | Low | 10:18:55 - 10:48:55 | 6681 |
| Portola | 10:33:58 | -38.5 | Dark | Down | 26.7 | 267.3 | Low | 10:18:58 - 10:48:58 | 6679 |
| Quincy | 10:33:59 | -38.7 | Dark | Down | 27.0 | 266.9 | Low | 10:18:59 - 10:48:59 | 6672 |
| Yerington | 10:33:51 | -38.3 | Dark | Down | 25.7 | 268.5 | Low | 10:18:51 - 10:48:51 | 6664 |
| Tonopah | 10:33:45 | -37.7 | Dark | Down | 24.2 | 270.2 | Low | 10:18:45 - 10:48:45 | 6661 |
| Carson City | 10:33:54 | -38.5 | Dark | Down | 26.2 | 268.0 | Low | 10:18:54 - 10:48:54 | 6658 |
| Hawthorne | 10:33:49 | -38.2 | Dark | Down | 25.3 | 269.1 | Low | 10:18:49 - 10:48:49 | 6650 |
| Gardnerville | 10:33:52 | -38.6 | Dark | Down | 26.2 | 268.2 | Low | 10:18:52 - 10:48:52 | 6644 |
| Indian Springs | 10:33:37 | -37.5 | Dark | Down | 23.0 | 271.7 | Low | 10:18:37 - 10:48:37 | 6607 |
| Lee Vining | 10:33:47 | -38.9 | Dark | Down | 25.7 | 269.0 | Low | 10:18:47 - 10:48:47 | 6598 |
| Beatty | 10:33:40 | -38.1 | Dark | Down | 23.9 | 270.9 | Low | 10:18:40 - 10:48:40 | 6597 |
| Henderson | 10:33:34 | -37.4 | Dark | Down | 22.4 | 272.3 | Low | 10:18:34 - 10:48:34 | 6591 |
| Patrick | 10:33:31 | -37.0 | Dark | Down | 21.5 | 273.2 | Low | 10:18:31 - 10:48:31 | 6582 |
| Bishop | 10:33:43 | -38.8 | Dark | Down | 25.2 | 269.8 | Low | 10:18:43 - 10:48:43 | 6580 |
| Kingman/Dolan Springs | 10:33:30 | -37.2 | Dark | Down | 21.7 | 273.2 | Low | 10:18:30 - 10:48:30 | 6561 |
| Laughlin/Bullhead City | 10:33:29 | -37.6 | Dark | Down | 22.1 | 272.9 | Low | 10:18:29 - 10:48:29 | 6544 |
| Mohave Valley | 10:33:29 | -37.7 | Dark | Down | 22.1 | 273.0 | Low | 10:18:29 - 10:48:29 | 6525 |
| George/Scottsdale | 10:33:22 | -36.4 | Dark | Down | 19.8 | 274.9 | Really Low | 10:18:22 - 10:48:22 | 6523 |
| Lake Havasu City | 10:33:27 | -37.8 | Dark | Down | 21.8 | 273.3 | Low | 10:18:27 - 10:48:27 | 6505 |
| Parker | 10:33:25 | -38.0 | Dark | Down | 21.8 | 273.5 | Low | 10:18:25 - 10:48:25 | 6481 |
| Idyllwild | 10:33:26 | -39.9 | Dark | Down | 23.8 | 272.3 | Low | 10:18:26 - 10:48:26 | 6380 |
| Calipatria | 10:33:22 | -39.4 | Dark | Down | 22.8 | 273.2 | Low | 10:18:22 - 10:48:22 | 6372 |
| Yuma | 10:33:20 | -39.0 | Dark | Down | 22.0 | 273.9 | Low | 10:18:20 - 10:48:20 | 6368 |
| Wildwood | 10:33:30 | -40.9 | Dark | Down | 25.4 | 271.2 | Low | 10:18:30 - 10:48:30 | 6347 |
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 469584, (2023/03/20 10:37UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 4.60 167 16Psi Leo 09:43:43.9 +14:01:18 5.3 2.46 161 PPM 126851 09:50:50.4 +14:07:15 8.5 0.90 163 PPM 126876 09:52:11.0 +14:28:58 9.0 0.42 163 469584 09:53:24.2 +14:46:45 15.3 163 Positions are for J2000
Event circumstances last updated at 2022/05/03 01:04:09 UT
Marc W. Buie, Southwest Research Institute