Event between 12UV177 and star GA1180:00445816 with event index number of 2307435
Geocentric closest approach at 2022/01/20 01:33:46 UTC
J2000 position of star is 03:03:08.9 +29:20:33
Equinox of date position of star is 03:04:28.2 +29:25:39
Stellar brightness G=16.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 91 degrees from the moon.
Moon is 96% illuminated.
TNO apparent brightness V=24.0
[RECON map]
TNO is 28.8 AU from the Sun
and 28.4 AU from the Earth.
The TNO is moving 9.5
km/sec on the sky relative to the star, or,
1.7 arcsec/hr.
The 1-sigma error in the time of the event is 152 seconds.
The 1-sigma cross-track error in the shadow position is
3582 km.
The sky-plane scale is
20595.9 km/arcsec.
The TNO has an absolute magnitude Hv=9.2
Diameter=87.5 km assuming a 5% albedo -- 9.2 sec chord
Diameter=35.7 km assuming a 30% albedo -- 3.8 sec chord
Dynamical classification is 1:1
Star training set for 12UV177, (2022/01/20 01:34UT) Object RA Dec mag sep mel Aldebaran 04:37:11.3 +16:33:07 0.8 24.84 74 44Zet Per 03:55:31.4 +31:56:50 2.8 11.25 80 PPM 092179 03:04:49.5 +28:21:18 6.5 1.08 91 PPM 092195 03:06:40.2 +29:37:28 8.2 0.52 90 PPM 092166 03:03:49.9 +29:20:06 10.3 0.17 91 12UV177 03:04:28.7 +29:25:40 16.5 90 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 0.0 km
RECON observability=0.0 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) |
| Victoria | 01:31:39 | -6.7 | NT | Down | 61.9 | 123.2 | Up | 01:18:28 - 01:44:49 | 4724 |
| Sisters | 01:32:25 | -6.3 | NT | Down | 65.3 | 118.8 | Up | 01:19:14 - 01:45:35 | 4549 |
| Chiloquin | 01:32:45 | -5.5 | CT | Down | 65.9 | 115.2 | Up | 01:19:34 - 01:45:55 | 4545 |
| Kamloops | 01:31:10 | -9.2 | NT | Down | 62.1 | 130.8 | Up | 01:17:59 - 01:44:20 | 4544 |
| The Dalles | 01:32:09 | -7.0 | NT | Down | 64.8 | 121.7 | Up | 01:18:58 - 01:45:19 | 4539 |
| La Pine/Gilchrist | 01:32:32 | -6.2 | NT | Down | 65.6 | 117.8 | Up | 01:19:21 - 01:45:42 | 4535 |
| Oregon Observatory | 01:32:29 | -6.3 | NT | Down | 65.6 | 118.3 | Up | 01:19:19 - 01:45:40 | 4534 |
| Klamath Falls | 01:32:49 | -5.5 | CT | Down | 66.2 | 114.6 | Up | 01:19:38 - 01:45:59 | 4533 |
| Bend | 01:32:27 | -6.4 | NT | Down | 65.6 | 118.8 | Up | 01:19:17 - 01:45:38 | 4527 |
| Maupin | 01:32:14 | -7.0 | NT | Down | 65.1 | 121.2 | Up | 01:19:04 - 01:45:25 | 4526 |
| Redmond | 01:32:24 | -6.6 | NT | Down | 65.5 | 119.4 | Up | 01:19:14 - 01:45:35 | 4520 |
| Goldendale | 01:32:06 | -7.3 | NT | Down | 64.9 | 122.7 | Up | 01:18:55 - 01:45:16 | 4516 |
| Ellensburg | 01:31:51 | -7.9 | NT | Down | 64.4 | 125.1 | Up | 01:18:41 - 01:45:02 | 4513 |
| Yakima | 01:31:57 | -7.8 | NT | Down | 64.6 | 124.4 | Up | 01:18:46 - 01:45:07 | 4509 |
| Wenatchee | 01:31:47 | -8.2 | NT | Down | 64.3 | 126.1 | Up | 01:18:37 - 01:44:58 | 4503 |
| Manson/Chelan | 01:31:41 | -8.4 | NT | Down | 64.1 | 127.1 | Up | 01:18:30 - 01:44:51 | 4498 |
| Peachland | 01:31:19 | -9.3 | NT | Down | 63.0 | 130.5 | Up | 01:18:09 - 01:44:30 | 4495 |
| Toppenish/White Swan | 01:31:58 | -7.8 | NT | Down | 64.8 | 124.3 | Up | 01:18:47 - 01:45:08 | 4494 |
| Summerland | 01:31:21 | -9.3 | NT | Down | 63.2 | 130.4 | Up | 01:18:10 - 01:44:31 | 4487 |
| Fall River/Burney | 01:33:01 | -5.3 | CT | Down | 66.9 | 112.7 | Up | 01:19:51 - 01:46:12 | 4485 |
| North Lake | 01:32:36 | -6.4 | NT | Down | 66.2 | 117.8 | Up | 01:19:26 - 01:45:47 | 4484 |
| Penticton | 01:31:22 | -9.3 | NT | Down | 63.3 | 130.5 | Up | 01:18:11 - 01:44:32 | 4478 |
| Kelowna | 01:31:18 | -9.5 | NT | Down | 63.1 | 131.1 | Up | 01:18:07 - 01:44:28 | 4476 |
| Brewster | 01:31:38 | -8.7 | NT | Down | 64.1 | 128.0 | Up | 01:18:27 - 01:44:48 | 4475 |
| Oliver | 01:31:25 | -9.2 | NT | Down | 63.5 | 130.0 | Up | 01:18:15 - 01:44:36 | 4474 |
| Okanogan | 01:31:34 | -9.0 | NT | Down | 64.0 | 128.7 | Up | 01:18:24 - 01:44:45 | 4465 |
| Tonasket | 01:31:31 | -9.2 | NT | Down | 63.9 | 129.5 | Up | 01:18:21 - 01:44:42 | 4460 |
| Anarchist Mountain Observatory | 01:31:28 | -9.3 | NT | Down | 63.7 | 130.1 | Up | 01:18:18 - 01:44:39 | 4459 |
| Paisley | 01:32:42 | -6.5 | NT | Down | 66.7 | 117.3 | Up | 01:19:31 - 01:45:52 | 4448 |
| Greenville | 01:33:12 | -5.3 | CT | Down | 67.6 | 111.3 | Up | 01:20:01 - 01:46:22 | 4434 |
| Quincy | 01:33:15 | -5.3 | CT | Down | 67.7 | 110.9 | Up | 01:20:04 - 01:46:25 | 4430 |
| Gimple | 01:33:11 | -5.4 | CT | Down | 67.7 | 111.5 | Up | 01:20:00 - 01:46:21 | 4427 |
| Lakeview | 01:32:47 | -6.4 | NT | Down | 67.1 | 116.5 | Up | 01:19:36 - 01:45:57 | 4425 |
| Susanville | 01:33:07 | -5.6 | CT | Down | 67.7 | 112.3 | Up | 01:19:57 - 01:46:18 | 4416 |
| Pasco | 01:31:58 | -8.6 | NT | Down | 65.6 | 126.1 | Up | 01:18:48 - 01:45:09 | 4402 |
| Cedarville | 01:32:54 | -6.3 | NT | Down | 67.5 | 115.4 | Up | 01:19:44 - 01:46:05 | 4400 |
| Portola | 01:33:15 | -5.6 | CT | Down | 68.1 | 111.3 | Up | 01:20:04 - 01:46:25 | 4390 |
| PNWRO | 01:32:00 | -8.7 | NT | Down | 65.9 | 126.0 | Up | 01:18:50 - 01:45:11 | 4383 |
| Reno | 01:33:16 | -5.9 | CT | Down | 68.6 | 111.5 | Up | 01:20:06 - 01:46:27 | 4334 |
| Carson City | 01:33:21 | -5.8 | CT | Down | 68.8 | 110.7 | Up | 01:20:11 - 01:46:32 | 4325 |
| Gardnerville | 01:33:23 | -5.8 | CT | Down | 68.9 | 110.2 | Up | 01:20:13 - 01:46:34 | 4316 |
| CPSLO | 01:34:07 | -3.9 | CT | Down | 69.3 | 100.1 | Up | 01:20:57 - 01:47:18 | 4310 |
| Yerington | 01:33:22 | -6.2 | NT | Down | 69.3 | 111.1 | Up | 01:20:11 - 01:46:32 | 4270 |
| Lee Vining | 01:33:33 | -5.9 | CT | Down | 69.8 | 108.6 | Up | 01:20:23 - 01:46:44 | 4245 |
| Hawthorne | 01:33:26 | -6.5 | NT | Down | 69.9 | 110.7 | Up | 01:20:16 - 01:46:37 | 4218 |
| Bishop | 01:33:38 | -6.3 | NT | Down | 70.5 | 108.0 | Up | 01:20:28 - 01:46:49 | 4172 |
| Wildwood | 01:34:16 | -5.1 | CT | Down | 71.2 | 98.8 | Up | 01:21:06 - 01:47:27 | 4108 |
| Tonopah | 01:33:29 | -7.4 | NT | Down | 71.1 | 111.5 | Up | 01:20:19 - 01:46:40 | 4093 |
| Beatty | 01:33:41 | -7.3 | NT | Down | 71.9 | 108.9 | Up | 01:20:30 - 01:46:51 | 4027 |
| Idyllwild | 01:34:16 | -6.4 | NT | Down | 72.8 | 99.5 | Up | 01:21:06 - 01:47:27 | 3938 |
| Indian Springs | 01:33:41 | -8.1 | NT | Down | 72.8 | 109.5 | Up | 01:20:31 - 01:46:52 | 3929 |
| Henderson | 01:33:47 | -8.4 | NT | Down | 73.5 | 108.9 | Up | 01:20:36 - 01:46:57 | 3856 |
| Calipatria | 01:34:20 | -7.2 | NT | Down | 73.9 | 98.7 | Up | 01:21:10 - 01:47:31 | 3818 |
| Laughlin/Bullhead City | 01:33:54 | -8.5 | NT | Down | 74.2 | 106.7 | Up | 01:20:44 - 01:47:05 | 3797 |
| Mohave Valley | 01:33:58 | -8.4 | NT | Down | 74.2 | 105.8 | Up | 01:20:47 - 01:47:08 | 3789 |
| Lake Havasu City | 01:34:02 | -8.5 | NT | Down | 74.6 | 104.8 | Up | 01:20:51 - 01:47:12 | 3756 |
| Kingman/Dolan Springs | 01:33:53 | -8.9 | NT | Down | 74.5 | 107.5 | Up | 01:20:43 - 01:47:04 | 3754 |
| Blythe | 01:34:12 | -8.0 | NT | Down | 74.6 | 101.4 | Up | 01:21:02 - 01:47:23 | 3752 |
| Patrick | 01:33:50 | -9.1 | NT | Down | 74.6 | 108.5 | Up | 01:20:39 - 01:47:00 | 3745 |
| Parker | 01:34:06 | -8.4 | NT | Down | 74.7 | 103.6 | Up | 01:20:56 - 01:47:17 | 3743 |
| Yuma | 01:34:23 | -7.7 | NT | Down | 74.7 | 98.1 | Up | 01:21:13 - 01:47:34 | 3728 |
| Sleaford | 01:30:25 | -18.2 | Dark | Up | 66.2 | 158.7 | Up | 01:17:15 - 01:43:36 | 3641 |
| George/Scottsdale | 01:34:04 | -10.2 | NT | Down | 76.7 | 105.3 | Up | 01:20:54 - 01:47:15 | 3520 |
| Dunrhomin | 01:32:31 | -16.8 | AT | Down | 77.1 | 145.2 | Up | 01:19:20 - 01:45:41 | 3195 |
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 12UV177, (2022/01/20 01:34UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 24.84 74 44Zet Per 03:54:07.9 +31:53:01 2.8 11.25 80 PPM 092179 03:03:30.3 +28:16:11 6.5 1.08 91 PPM 092195 03:05:20.2 +29:32:24 8.2 0.52 90 PPM 092166 03:02:30.3 +29:14:58 10.3 0.17 91 12UV177 03:03:08.9 +29:20:33 16.5 91 Positions are for J2000
Event circumstances last updated at 2021/12/04 02:03:25 UT
Marc W. Buie, Southwest Research Institute