Event between 10TH and star GA0980:01519887 with event index number of 2427017
Geocentric closest approach at 2021/12/05 04:13:43 UTC
J2000 position of star is 06:15:46.6 +08:16:12
Equinox of date position of star is 06:16:58.3 +08:15:41
Stellar brightness G=13.2,
use SENSEUP=32 with the MallinCam and and exposure
time of 500 milli-seconds with the QHY174 camera.
Star is 161 degrees from the moon.
Moon is 1% illuminated.
TNO apparent brightness V=22.2
[RECON map]
TNO is 19.4 AU from the Sun
and 18.5 AU from the Earth.
The TNO is moving 22.6
km/sec on the sky relative to the star, or,
6.1 arcsec/hr.
The 1-sigma error in the time of the event is 61 seconds.
The 1-sigma cross-track error in the shadow position is
829 km.
The sky-plane scale is
13402.4 km/arcsec.
The TNO has an absolute magnitude Hv=9.3
Diameter=83.2 km assuming a 5% albedo -- 3.7 sec chord
Diameter=34.0 km assuming a 30% albedo -- 1.5 sec chord
Dynamical classification is CENTAURR
Star training set for 10TH, (2021/12/05 04:14UT) Object RA Dec mag sep mel Betelgeuse 05:56:21.6 +07:24:34 0.4 5.18 162 Alhena 06:38:58.7 +16:22:43 1.9 9.73 164 PPM 150217 06:18:09.4 +07:02:35 6.4 1.25 160 PPM 150181 06:16:57.5 +08:26:55 8.1 0.19 161 10TH 06:16:58.3 +08:15:41 13.2 161 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 40.7 km
RECON observability=0.2 and success probability=0.0%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kamloops | 04:16:41 | -39.8 | Dark | Down | 15.3 | 95.6 | Really Low | 04:11:04 - 04:22:18 | 6578 |
| Sleaford | 04:16:20 | -47.7 | Dark | Down | 23.8 | 108.0 | Low | 04:10:43 - 04:21:57 | 6556 |
| Kelowna | 04:16:43 | -40.6 | Dark | Down | 15.9 | 96.1 | Really Low | 04:11:06 - 04:22:20 | 6509 |
| Peachland | 04:16:44 | -40.4 | Dark | Down | 15.8 | 95.9 | Really Low | 04:11:07 - 04:22:21 | 6503 |
| Summerland | 04:16:44 | -40.5 | Dark | Down | 15.8 | 95.9 | Really Low | 04:11:07 - 04:22:21 | 6491 |
| Penticton | 04:16:45 | -40.6 | Dark | Down | 15.9 | 96.0 | Really Low | 04:11:08 - 04:22:22 | 6485 |
| Oliver | 04:16:46 | -40.7 | Dark | Down | 16.0 | 95.9 | Really Low | 04:11:09 - 04:22:23 | 6458 |
| Victoria | 04:16:51 | -38.3 | Dark | Down | 13.5 | 92.8 | Really Low | 04:11:14 - 04:22:28 | 6446 |
| Anarchist Mountain Observatory | 04:16:46 | -40.9 | Dark | Down | 16.1 | 96.0 | Really Low | 04:11:09 - 04:22:23 | 6443 |
| Tonasket | 04:16:47 | -40.9 | Dark | Down | 16.1 | 95.8 | Really Low | 04:11:10 - 04:22:24 | 6420 |
| Okanogan | 04:16:49 | -40.9 | Dark | Down | 16.0 | 95.6 | Really Low | 04:11:12 - 04:22:26 | 6395 |
| Brewster | 04:16:50 | -40.8 | Dark | Down | 15.9 | 95.4 | Really Low | 04:11:13 - 04:22:27 | 6376 |
| Manson/Chelan | 04:16:51 | -40.6 | Dark | Down | 15.7 | 95.1 | Really Low | 04:11:14 - 04:22:28 | 6364 |
| Wenatchee | 04:16:53 | -40.6 | Dark | Down | 15.6 | 94.8 | Really Low | 04:11:16 - 04:22:30 | 6328 |
| Ellensburg | 04:16:54 | -40.5 | Dark | Down | 15.5 | 94.5 | Really Low | 04:11:17 - 04:22:31 | 6298 |
| Yakima | 04:16:56 | -40.6 | Dark | Down | 15.5 | 94.4 | Really Low | 04:11:19 - 04:22:33 | 6266 |
| Toppenish/White Swan | 04:16:57 | -40.7 | Dark | Down | 15.7 | 94.5 | Really Low | 04:11:20 - 04:22:34 | 6246 |
| Pasco | 04:16:56 | -41.6 | Dark | Down | 16.6 | 95.4 | Really Low | 04:11:19 - 04:22:33 | 6223 |
| Goldendale | 04:16:59 | -40.5 | Dark | Down | 15.4 | 94.0 | Really Low | 04:11:22 - 04:22:36 | 6207 |
| PNWRO | 04:16:56 | -41.8 | Dark | Down | 16.8 | 95.5 | Really Low | 04:11:19 - 04:22:33 | 6201 |
| The Dalles | 04:16:59 | -40.3 | Dark | Down | 15.2 | 93.7 | Really Low | 04:11:22 - 04:22:36 | 6192 |
| Maupin | 04:17:01 | -40.5 | Dark | Down | 15.3 | 93.7 | Really Low | 04:11:24 - 04:22:38 | 6157 |
| Sisters | 04:17:04 | -40.3 | Dark | Down | 15.0 | 93.1 | Really Low | 04:11:27 - 04:22:41 | 6090 |
| Redmond | 04:17:04 | -40.5 | Dark | Down | 15.3 | 93.4 | Really Low | 04:11:27 - 04:22:41 | 6084 |
| Bend | 04:17:05 | -40.5 | Dark | Down | 15.2 | 93.2 | Really Low | 04:11:28 - 04:22:42 | 6068 |
| Oregon Observatory | 04:17:05 | -40.4 | Dark | Down | 15.1 | 93.1 | Really Low | 04:11:28 - 04:22:42 | 6055 |
| La Pine/Gilchrist | 04:17:06 | -40.4 | Dark | Down | 15.1 | 93.0 | Really Low | 04:11:29 - 04:22:43 | 6039 |
| North Lake | 04:17:07 | -40.9 | Dark | Down | 15.6 | 93.3 | Really Low | 04:11:30 - 04:22:44 | 5996 |
| Chiloquin | 04:17:10 | -40.3 | Dark | Down | 14.9 | 92.4 | Really Low | 04:11:33 - 04:22:47 | 5949 |
| Paisley | 04:17:08 | -41.2 | Dark | Down | 15.9 | 93.4 | Really Low | 04:11:31 - 04:22:45 | 5945 |
| Klamath Falls | 04:17:11 | -40.4 | Dark | Down | 15.0 | 92.4 | Really Low | 04:11:34 - 04:22:48 | 5919 |
| Lakeview | 04:17:10 | -41.4 | Dark | Down | 16.0 | 93.4 | Really Low | 04:11:33 - 04:22:47 | 5900 |
| Cedarville | 04:17:12 | -41.6 | Dark | Down | 16.2 | 93.3 | Really Low | 04:11:35 - 04:22:49 | 5842 |
| Fall River/Burney | 04:17:15 | -40.8 | Dark | Down | 15.3 | 92.3 | Really Low | 04:11:38 - 04:22:52 | 5813 |
| Susanville | 04:17:16 | -41.4 | Dark | Down | 15.9 | 92.7 | Really Low | 04:11:39 - 04:22:53 | 5750 |
| Greenville | 04:17:17 | -41.2 | Dark | Down | 15.7 | 92.4 | Really Low | 04:11:40 - 04:22:54 | 5729 |
| Gimple | 04:17:17 | -41.2 | Dark | Down | 15.8 | 92.4 | Really Low | 04:11:40 - 04:22:54 | 5728 |
| Quincy | 04:17:17 | -41.2 | Dark | Down | 15.7 | 92.3 | Really Low | 04:11:40 - 04:22:54 | 5711 |
| Portola | 04:17:17 | -41.6 | Dark | Down | 16.1 | 92.6 | Really Low | 04:11:40 - 04:22:54 | 5695 |
| Reno | 04:17:17 | -42.1 | Dark | Down | 16.6 | 93.0 | Really Low | 04:11:40 - 04:22:54 | 5664 |
| Carson City | 04:17:18 | -42.1 | Dark | Down | 16.7 | 92.9 | Really Low | 04:11:41 - 04:22:55 | 5632 |
| Gardnerville | 04:17:19 | -42.2 | Dark | Down | 16.7 | 92.8 | Really Low | 04:11:42 - 04:22:56 | 5610 |
| Yerington | 04:17:18 | -42.6 | Dark | Down | 17.2 | 93.2 | Really Low | 04:11:41 - 04:22:55 | 5607 |
| Dunrhomin | 04:16:55 | -52.9 | Dark | Down | 27.6 | 103.3 | Low | 04:11:18 - 04:22:32 | 5569 |
| Hawthorne | 04:17:19 | -43.1 | Dark | Down | 17.6 | 93.4 | Really Low | 04:11:42 - 04:22:56 | 5559 |
| Lee Vining | 04:17:22 | -42.8 | Dark | Down | 17.3 | 92.9 | Really Low | 04:11:45 - 04:22:59 | 5514 |
| Tonopah | 04:17:19 | -44.2 | Dark | Down | 18.7 | 94.2 | Really Low | 04:11:42 - 04:22:56 | 5501 |
| Bishop | 04:17:23 | -43.4 | Dark | Down | 17.9 | 93.2 | Really Low | 04:11:46 - 04:23:00 | 5451 |
| Beatty | 04:17:22 | -44.7 | Dark | Down | 19.2 | 94.1 | Really Low | 04:11:45 - 04:22:59 | 5389 |
| Indian Springs | 04:17:21 | -45.6 | Dark | Down | 20.1 | 94.6 | Low | 04:11:44 - 04:22:58 | 5347 |
| Henderson | 04:17:22 | -46.2 | Dark | Down | 20.7 | 94.8 | Low | 04:11:45 - 04:22:59 | 5289 |
| CPSLO | 04:17:30 | -41.6 | Dark | Down | 16.1 | 91.2 | Really Low | 04:11:53 - 04:23:07 | 5288 |
| Patrick | 04:17:22 | -47.2 | Dark | Down | 21.6 | 95.3 | Low | 04:11:45 - 04:22:59 | 5217 |
| Laughlin/Bullhead City | 04:17:23 | -46.6 | Dark | Down | 21.1 | 94.8 | Low | 04:11:46 - 04:23:00 | 5202 |
| Kingman/Dolan Springs | 04:17:23 | -47.0 | Dark | Down | 21.5 | 95.1 | Low | 04:11:46 - 04:23:00 | 5199 |
| Mohave Valley | 04:17:24 | -46.6 | Dark | Down | 21.1 | 94.7 | Low | 04:11:47 - 04:23:01 | 5176 |
| Wildwood | 04:17:31 | -43.4 | Dark | Down | 17.9 | 92.1 | Really Low | 04:11:54 - 04:23:08 | 5150 |
| Lake Havasu City | 04:17:25 | -46.9 | Dark | Down | 21.4 | 94.7 | Low | 04:11:48 - 04:23:02 | 5136 |
| Parker | 04:17:26 | -46.9 | Dark | Down | 21.4 | 94.5 | Low | 04:11:49 - 04:23:03 | 5102 |
| Idyllwild | 04:17:30 | -44.9 | Dark | Down | 19.5 | 93.0 | Really Low | 04:11:53 - 04:23:07 | 5093 |
| Blythe | 04:17:27 | -46.7 | Dark | Down | 21.2 | 94.2 | Low | 04:11:50 - 04:23:04 | 5056 |
| George/Scottsdale | 04:17:23 | -48.9 | Dark | Down | 23.5 | 95.8 | Low | 04:11:46 - 04:23:00 | 5033 |
| Calipatria | 04:17:30 | -45.9 | Dark | Down | 20.5 | 93.5 | Low | 04:11:53 - 04:23:07 | 5020 |
| Yuma | 04:17:30 | -46.7 | Dark | Down | 21.3 | 93.8 | Low | 04:11:53 - 04:23:07 | 4967 |
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 10TH, (2021/12/05 04:14UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 5.18 162 Alhena 06:37:42.8 +16:23:57 1.9 9.73 164 PPM 150217 06:16:58.4 +07:03:08 6.4 1.25 160 PPM 150181 06:15:45.7 +08:27:27 8.1 0.19 161 10TH 06:15:46.6 +08:16:12 13.2 161 Positions are for J2000
Event circumstances last updated at 2021/12/04 02:01:05 UT
Marc W. Buie, Southwest Research Institute