Event between 04FW164 and star GA0760:05229727 with event index number of 1625454
Geocentric closest approach at 2021/05/08 05:51:22 UTC
J2000 position of star is 15:24:08.6 -13:10:40
Equinox of date position of star is 15:25:19.3 -13:15:08
Stellar brightness G=12.5,
use SENSEUP=16 with the MallinCam and and exposure
time of 250 milli-seconds with the QHY174 camera.
Star is 137 degrees from the moon.
Moon is 11% illuminated.
TNO apparent brightness V=23.3
[RECON map]
TNO is 34.0 AU from the Sun
and 33.0 AU from the Earth.
The TNO is moving 24.0
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 532 seconds.
The 1-sigma cross-track error in the shadow position is
5369 km.
The sky-plane scale is
23929.8 km/arcsec.
The TNO has an absolute magnitude Hv=8.0
Diameter=150.0 km assuming a 5% albedo -- 6.2 sec chord
Diameter=61.2 km assuming a 30% albedo -- 2.5 sec chord
Dynamical classification is 3:2E
Star training set for 04FW164, (2021/05/08 05:51UT) Object RA Dec mag sep mel Antares 16:30:43.2 -26:28:39 0.9 20.24 119 27Bet Lib 15:18:09.5 -09:27:37 2.6 4.18 140 31Eps Lib 15:25:21.5 -10:23:51 4.8 2.85 138 PPM 230200 15:25:41.4 -12:58:43 8.5 0.29 137 PPM 230176 15:24:59.4 -13:08:20 9.1 0.14 137 04FW164 15:25:19.5 -13:15:08 12.5 137 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
1.7 sigma about the mid-time.
The median site spacing is 15.6 km
RECON observability=0.9 and success probability=5.9%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Clarence Fulton | 05:54:03 | -17.6 | AT | Down | 19.3 | 143.1 | Really Low | 05:39:03 - 06:09:03 | 1135 |
| Kelowna | 05:54:04 | -17.9 | AT | Down | 19.6 | 142.9 | Really Low | 05:39:04 - 06:09:04 | 1106 |
| Peachland | 05:54:05 | -17.9 | AT | Down | 19.6 | 142.6 | Really Low | 05:39:05 - 06:09:05 | 1091 |
| Summerland | 05:54:05 | -18.1 | Dark | Down | 19.7 | 142.7 | Really Low | 05:39:05 - 06:09:05 | 1083 |
| Penticton | 05:54:05 | -18.2 | Dark | Down | 19.8 | 142.8 | Really Low | 05:39:05 - 06:09:05 | 1082 |
| Oliver | 05:54:05 | -18.5 | Dark | Down | 20.1 | 142.7 | Low | 05:39:05 - 06:09:05 | 1058 |
| Anarchist Mountain Observatory | 05:54:05 | -18.7 | Dark | Down | 20.3 | 142.8 | Low | 05:39:05 - 06:09:05 | 1052 |
| Tonasket | 05:54:05 | -18.9 | Dark | Down | 20.5 | 142.7 | Low | 05:39:05 - 06:09:05 | 1029 |
| Okanogan | 05:54:07 | -19.2 | Dark | Down | 20.7 | 142.5 | Low | 05:39:07 - 06:09:07 | 1002 |
| Brewster | 05:54:07 | -19.3 | Dark | Down | 20.9 | 142.2 | Low | 05:39:07 - 06:09:07 | 978 |
| Manson/Chelan | 05:54:08 | -19.4 | Dark | Down | 20.9 | 141.8 | Low | 05:39:08 - 06:09:08 | 954 |
| Wenatchee | 05:54:10 | -19.7 | Dark | Down | 21.2 | 141.6 | Low | 05:39:10 - 06:09:10 | 917 |
| Victoria | 05:54:15 | -17.7 | AT | Down | 19.0 | 139.0 | Really Low | 05:39:15 - 06:09:15 | 911 |
| Ellensburg | 05:54:10 | -20.0 | Dark | Down | 21.4 | 141.3 | Low | 05:39:10 - 06:09:10 | 882 |
| Pasco | 05:54:08 | -21.1 | Dark | Down | 22.6 | 142.4 | Low | 05:39:08 - 06:09:08 | 868 |
| PNWRO | 05:54:08 | -21.4 | Dark | Down | 22.9 | 142.6 | Low | 05:39:08 - 06:09:08 | 857 |
| Yakima | 05:54:11 | -20.4 | Dark | Down | 21.7 | 141.1 | Low | 05:39:11 - 06:09:11 | 852 |
| Dunrhomin | 05:53:34 | -30.7 | Dark | Down | 33.0 | 154.8 | Up | 05:38:34 - 06:08:34 | 842 |
| Toppenish/White Swan | 05:54:11 | -20.6 | Dark | Down | 22.0 | 141.2 | Low | 05:39:11 - 06:09:11 | 842 |
| Goldendale | 05:54:12 | -20.9 | Dark | Down | 22.2 | 140.7 | Low | 05:39:12 - 06:09:12 | 790 |
| The Dalles | 05:54:13 | -21.0 | Dark | Down | 22.2 | 140.3 | Low | 05:39:13 - 06:09:13 | 764 |
| Maupin | 05:54:14 | -21.4 | Dark | Down | 22.6 | 140.3 | Low | 05:39:14 - 06:09:14 | 736 |
| Redmond | 05:54:15 | -22.1 | Dark | Down | 23.3 | 140.0 | Low | 05:39:15 - 06:09:15 | 667 |
| Sisters | 05:54:16 | -21.9 | Dark | Down | 23.1 | 139.6 | Low | 05:39:16 - 06:09:16 | 658 |
| Bend | 05:54:16 | -22.2 | Dark | Down | 23.4 | 139.8 | Low | 05:39:16 - 06:09:16 | 648 |
| Oregon Observatory | 05:54:16 | -22.3 | Dark | Down | 23.4 | 139.6 | Low | 05:39:16 - 06:09:16 | 631 |
| La Pine/Gilchrist | 05:54:17 | -22.5 | Dark | Down | 23.6 | 139.5 | Low | 05:39:17 - 06:09:17 | 614 |
| North Lake | 05:54:16 | -23.1 | Dark | Down | 24.2 | 139.9 | Low | 05:39:16 - 06:09:16 | 599 |
| Paisley | 05:54:15 | -23.7 | Dark | Down | 24.8 | 140.1 | Low | 05:39:15 - 06:09:15 | 568 |
| Lakeview | 05:54:16 | -24.2 | Dark | Down | 25.3 | 140.1 | Low | 05:39:16 - 06:09:16 | 535 |
| Chiloquin | 05:54:19 | -23.2 | Dark | Down | 24.2 | 138.9 | Low | 05:39:19 - 06:09:19 | 519 |
| Klamath Falls | 05:54:19 | -23.6 | Dark | Down | 24.5 | 138.8 | Low | 05:39:19 - 06:09:19 | 495 |
| Cedarville | 05:54:16 | -24.8 | Dark | Down | 25.8 | 140.1 | Low | 05:39:16 - 06:09:16 | 490 |
| Fall River/Burney | 05:54:19 | -24.7 | Dark | Down | 25.6 | 138.8 | Low | 05:39:19 - 06:09:19 | 415 |
| Susanville | 05:54:18 | -25.5 | Dark | Down | 26.5 | 139.3 | Low | 05:39:18 - 06:09:18 | 388 |
| Gimple | 05:54:19 | -25.7 | Dark | Down | 26.6 | 139.0 | Low | 05:39:19 - 06:09:19 | 360 |
| Greenville | 05:54:19 | -25.6 | Dark | Down | 26.5 | 139.0 | Low | 05:39:19 - 06:09:19 | 357 |
| Portola | 05:54:18 | -26.1 | Dark | Down | 27.0 | 139.3 | Low | 05:39:18 - 06:09:18 | 346 |
| Reno | 05:54:16 | -26.6 | Dark | Down | 27.5 | 139.8 | Low | 05:39:16 - 06:09:16 | 345 |
| Quincy | 05:54:19 | -25.8 | Dark | Down | 26.7 | 138.9 | Low | 05:39:19 - 06:09:19 | 341 |
| Yerington | 05:54:15 | -27.3 | Dark | Down | 28.3 | 140.2 | Low | 05:39:15 - 06:09:15 | 322 |
| Carson City | 05:54:17 | -26.9 | Dark | Down | 27.8 | 139.7 | Low | 05:39:17 - 06:09:17 | 317 |
| Tonopah | 05:54:11 | -28.9 | Dark | Down | 30.0 | 141.8 | Low | 05:39:11 - 06:09:11 | 308 |
| Hawthorne | 05:54:14 | -28.0 | Dark | Down | 28.9 | 140.6 | Low | 05:39:14 - 06:09:14 | 301 |
| Gardnerville | 05:54:17 | -27.1 | Dark | Down | 28.0 | 139.7 | Low | 05:39:17 - 06:09:17 | 299 |
| Lee Vining | 05:54:16 | -28.2 | Dark | Down | 29.1 | 139.9 | Low | 05:39:16 - 06:09:16 | 241 |
| Indian Springs | 05:54:07 | -30.8 | Dark | Down | 31.9 | 142.7 | Up | 05:39:07 - 06:09:07 | 237 |
| Beatty | 05:54:10 | -30.1 | Dark | Down | 31.1 | 141.8 | Up | 05:39:10 - 06:09:10 | 229 |
| Henderson | 05:54:05 | -31.6 | Dark | Down | 32.6 | 143.2 | Up | 05:39:05 - 06:09:05 | 216 |
| Bishop | 05:54:14 | -29.0 | Dark | Down | 29.9 | 140.4 | Low | 05:39:14 - 06:09:14 | 215 |
| Patrick | 05:54:02 | -32.5 | Dark | Down | 33.7 | 144.1 | Up | 05:39:02 - 06:09:02 | 201 |
| Kingman/Dolan Springs | 05:54:03 | -32.7 | Dark | Down | 33.8 | 143.8 | Up | 05:39:03 - 06:09:03 | 177 |
| Laughlin/Bullhead City | 05:54:05 | -32.5 | Dark | Down | 33.5 | 143.3 | Up | 05:39:05 - 06:09:05 | 158 |
| Mohave Valley | 05:54:05 | -32.7 | Dark | Down | 33.8 | 143.2 | Up | 05:39:05 - 06:09:05 | 135 |
| George/Scottsdale | 05:53:57 | -34.8 | Dark | Down | 36.0 | 145.5 | Up | 05:38:57 - 06:08:57 | 127 |
| Lake Havasu City | 05:54:04 | -33.2 | Dark | Down | 34.2 | 143.3 | Up | 05:39:04 - 06:09:04 | 111 |
| Parker | 05:54:04 | -33.5 | Dark | Down | 34.5 | 143.1 | Up | 05:39:04 - 06:09:04 | 82 |
| Blythe | 05:54:05 | -33.8 | Dark | Down | 34.8 | 142.6 | Up | 05:39:05 - 06:09:05 | 29 |
| CPSLO | 05:54:22 | -29.8 | Dark | Down | 30.3 | 137.5 | Up | 05:39:22 - 06:09:22 | -29 |
| Idyllwild | 05:54:12 | -32.8 | Dark | Down | 33.6 | 140.6 | Up | 05:39:12 - 06:09:12 | -31 |
| Calipatria | 05:54:08 | -33.9 | Dark | Down | 34.7 | 141.5 | Up | 05:39:08 - 06:09:08 | -44 |
| Yuma | 05:54:06 | -34.6 | Dark | Down | 35.5 | 142.2 | Up | 05:39:06 - 06:09:06 | -50 |
| Wildwood | 05:54:17 | -31.7 | Dark | Down | 32.3 | 138.9 | Up | 05:39:17 - 06:09:17 | -64 |
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 04FW164, (2021/05/08 05:51UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 20.24 119 27Bet Lib 15:17:00.3 -09:22:59 2.6 4.18 140 31Eps Lib 15:24:11.8 -10:19:23 4.8 2.85 138 PPM 230200 15:24:30.7 -12:54:16 8.5 0.29 137 PPM 230176 15:23:48.6 -13:03:51 9.1 0.14 137 04FW164 15:24:08.6 -13:10:40 12.5 137 Positions are for J2000
Event circumstances last updated at 2021/04/18 22:55:56 UT
Marc W. Buie, Southwest Research Institute