Event between 12LB27 and star GA0980:17728979 with event index number of 2429080
Geocentric closest approach at 2022/05/13 08:58:15 UTC
J2000 position of star is 20:58:16.5 +08:51:59
Equinox of date position of star is 20:59:20.2 +08:57:06
Stellar brightness G=17.0,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 120 degrees from the moon.
Moon is 90% illuminated.
TNO apparent brightness V=22.0
[RECON map]
TNO is 15.7 AU from the Sun
and 15.7 AU from the Earth.
The TNO is moving 13.3
km/sec on the sky relative to the star, or,
4.2 arcsec/hr.
The 1-sigma error in the time of the event is 56 seconds.
The 1-sigma cross-track error in the shadow position is
1732 km.
The sky-plane scale is
11352.3 km/arcsec.
The TNO has an absolute magnitude Hv=9.7
Diameter=70.5 km assuming a 5% albedo -- 5.2 sec chord
Diameter=28.8 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is CENTAURR
Star training set for 12LB27, (2022/05/13 08:59UT) Object RA Dec mag sep mel Vega 18:37:41.8 +38:48:20 0.0 43.54 87 Tarazed 19:47:19.4 +10:40:09 2.7 17.83 102 PPM 171106 21:01:10.0 +07:36:17 6.3 1.42 120 PPM 170990 20:57:10.6 +09:20:48 8.0 0.67 119 PPM 171064 20:59:36.7 +08:53:17 8.7 0.09 120 12LB27 20:59:21.9 +08:57:15 17.0 120 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 8.9 km
RECON observability=1.0 and success probability=2.3%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| CPSLO | 09:00:45 | -34.3 | Dark | Up | 22.3 | 94.9 | Low | 08:55:33 - 09:05:57 | 5097 |
| Wildwood | 09:00:35 | -34.9 | Dark | Up | 24.0 | 95.6 | Low | 08:55:23 - 09:05:47 | 5063 |
| Idyllwild | 09:00:32 | -34.7 | Dark | Up | 25.6 | 96.6 | Low | 08:55:20 - 09:05:44 | 5001 |
| Calipatria | 09:00:27 | -34.9 | Dark | Up | 26.7 | 97.0 | Low | 08:55:15 - 09:05:39 | 4968 |
| Lee Vining | 09:01:04 | -31.4 | Dark | Up | 23.3 | 97.1 | Low | 08:55:52 - 09:06:16 | 4949 |
| Bishop | 09:00:59 | -31.8 | Dark | Up | 23.9 | 97.3 | Low | 08:55:47 - 09:06:11 | 4944 |
| Yuma | 09:00:23 | -34.9 | Dark | Up | 27.4 | 97.3 | Low | 08:55:11 - 09:05:35 | 4941 |
| Gardnerville | 09:01:11 | -30.6 | Dark | Up | 22.7 | 97.1 | Low | 08:55:59 - 09:06:23 | 4932 |
| Quincy | 09:01:20 | -29.9 | Dark | Up | 21.7 | 96.7 | Low | 08:56:08 - 09:06:32 | 4930 |
| Carson City | 09:01:16 | -30.4 | Dark | Up | 22.6 | 97.2 | Low | 08:56:04 - 09:06:28 | 4924 |
| Greenville | 09:01:21 | -29.7 | Dark | Up | 21.7 | 96.8 | Low | 08:56:09 - 09:06:33 | 4922 |
| Portola | 09:01:18 | -29.9 | Dark | Up | 22.1 | 97.0 | Low | 08:56:06 - 09:06:30 | 4921 |
| Gimple | 09:01:23 | -29.7 | Dark | Up | 21.7 | 96.8 | Low | 08:56:11 - 09:06:35 | 4920 |
| Blythe | 09:00:30 | -34.1 | Dark | Up | 27.4 | 97.8 | Low | 08:55:18 - 09:05:42 | 4913 |
| Reno | 09:01:18 | -30.0 | Dark | Up | 22.6 | 97.3 | Low | 08:56:06 - 09:06:30 | 4910 |
| Yerington | 09:01:12 | -30.4 | Dark | Up | 23.1 | 97.5 | Low | 08:56:00 - 09:06:24 | 4909 |
| Hawthorne | 09:01:10 | -30.7 | Dark | Up | 23.6 | 97.6 | Low | 08:55:58 - 09:06:22 | 4909 |
| Susanville | 09:01:24 | -29.4 | Dark | Up | 21.9 | 97.1 | Low | 08:56:12 - 09:06:36 | 4901 |
| Beatty | 09:00:55 | -31.7 | Dark | Up | 25.2 | 98.1 | Low | 08:55:43 - 09:06:07 | 4898 |
| Fall River/Burney | 09:01:28 | -29.0 | Dark | Up | 21.2 | 96.8 | Low | 08:56:16 - 09:06:40 | 4897 |
| Parker | 09:00:33 | -33.5 | Dark | Up | 27.6 | 98.3 | Low | 08:55:21 - 09:05:45 | 4885 |
| Lake Havasu City | 09:00:35 | -33.2 | Dark | Up | 27.5 | 98.4 | Low | 08:55:23 - 09:05:47 | 4876 |
| Tonopah | 09:01:05 | -30.8 | Dark | Up | 24.8 | 98.4 | Low | 08:55:53 - 09:06:17 | 4874 |
| Mohave Valley | 09:00:42 | -32.9 | Dark | Up | 27.3 | 98.5 | Low | 08:55:30 - 09:05:54 | 4874 |
| Indian Springs | 09:00:52 | -31.7 | Dark | Up | 26.1 | 98.7 | Low | 08:55:40 - 09:06:04 | 4866 |
| Laughlin/Bullhead City | 09:00:42 | -32.7 | Dark | Up | 27.2 | 98.6 | Low | 08:55:30 - 09:05:54 | 4866 |
| Klamath Falls | 09:01:37 | -27.9 | Dark | Up | 20.8 | 97.1 | Low | 08:56:25 - 09:06:49 | 4856 |
| Henderson | 09:00:47 | -32.0 | Dark | Up | 26.8 | 98.8 | Low | 08:55:35 - 09:05:59 | 4855 |
| Kingman/Dolan Springs | 09:00:42 | -32.5 | Dark | Up | 27.6 | 99.0 | Low | 08:55:30 - 09:05:54 | 4843 |
| Chiloquin | 09:01:40 | -27.6 | Dark | Up | 20.7 | 97.1 | Low | 08:56:28 - 09:06:52 | 4842 |
| Cedarville | 09:01:31 | -28.2 | Dark | Up | 22.1 | 97.9 | Low | 08:56:19 - 09:06:43 | 4837 |
| Patrick | 09:00:43 | -32.2 | Dark | Up | 27.7 | 99.2 | Low | 08:55:31 - 09:05:55 | 4828 |
| Lakeview | 09:01:36 | -27.6 | Dark | Up | 21.9 | 98.0 | Low | 08:56:24 - 09:06:48 | 4813 |
| Paisley | 09:01:40 | -27.2 | Dark | Up | 21.7 | 98.1 | Low | 08:56:28 - 09:06:52 | 4796 |
| George/Scottsdale | 09:00:30 | -33.0 | Dark | Up | 29.6 | 99.6 | Low | 08:55:18 - 09:05:42 | 4786 |
| North Lake | 09:01:44 | -26.7 | Dark | Up | 21.4 | 98.1 | Low | 08:56:32 - 09:06:56 | 4781 |
| La Pine/Gilchrist | 09:01:48 | -26.4 | Dark | Up | 20.9 | 97.8 | Low | 08:56:36 - 09:07:00 | 4779 |
| Oregon Observatory | 09:01:50 | -26.2 | Dark | Up | 20.9 | 98.0 | Low | 08:56:38 - 09:07:02 | 4767 |
| Bend | 09:01:50 | -26.0 | Dark | Up | 21.0 | 98.1 | Low | 08:56:38 - 09:07:02 | 4754 |
| Sisters | 09:01:53 | -25.8 | Dark | Up | 20.8 | 98.0 | Low | 08:56:41 - 09:07:05 | 4751 |
| Redmond | 09:01:52 | -25.8 | Dark | Up | 21.0 | 98.3 | Low | 08:56:40 - 09:07:04 | 4739 |
| Maupin | 09:01:59 | -24.9 | Dark | Up | 21.0 | 98.7 | Low | 08:56:47 - 09:07:11 | 4691 |
| The Dalles | 09:02:02 | -24.5 | Dark | Up | 20.9 | 98.8 | Low | 08:56:50 - 09:07:14 | 4673 |
| Goldendale | 09:02:03 | -24.2 | Dark | Up | 21.1 | 99.2 | Low | 08:56:51 - 09:07:15 | 4651 |
| Toppenish/White Swan | 09:02:07 | -23.6 | Dark | Up | 21.3 | 99.7 | Low | 08:56:55 - 09:07:19 | 4609 |
| Yakima | 09:02:09 | -23.4 | Dark | Up | 21.2 | 99.7 | Low | 08:56:57 - 09:07:21 | 4603 |
| PNWRO | 09:02:04 | -23.6 | Dark | Up | 22.4 | 100.8 | Low | 08:56:52 - 09:07:16 | 4582 |
| Ellensburg | 09:02:12 | -23.0 | Dark | Up | 21.1 | 99.9 | Low | 08:57:00 - 09:07:24 | 4581 |
| Pasco | 09:02:06 | -23.5 | Dark | Up | 22.2 | 100.7 | Low | 08:56:54 - 09:07:18 | 4576 |
| Victoria | 09:02:23 | -22.0 | Dark | Up | 19.0 | 98.2 | Really Low | 08:57:11 - 09:07:35 | 4576 |
| Wenatchee | 09:02:15 | -22.6 | Dark | Up | 21.2 | 100.2 | Low | 08:57:03 - 09:07:27 | 4553 |
| Manson/Chelan | 09:02:18 | -22.1 | Dark | Up | 21.2 | 100.6 | Low | 08:57:06 - 09:07:30 | 4522 |
| Brewster | 09:02:19 | -21.8 | Dark | Up | 21.4 | 100.9 | Low | 08:57:07 - 09:07:31 | 4500 |
| Okanogan | 09:02:22 | -21.5 | Dark | Up | 21.5 | 101.2 | Low | 08:57:10 - 09:07:34 | 4479 |
| Tonasket | 09:02:24 | -21.2 | Dark | Up | 21.6 | 101.5 | Low | 08:57:12 - 09:07:36 | 4456 |
| Anarchist Mountain Observatory | 09:02:26 | -20.9 | Dark | Up | 21.6 | 101.6 | Low | 08:57:14 - 09:07:38 | 4438 |
| Oliver | 09:02:28 | -20.7 | Dark | Up | 21.4 | 101.6 | Low | 08:57:16 - 09:07:40 | 4433 |
| Penticton | 09:02:30 | -20.4 | Dark | Up | 21.3 | 101.7 | Low | 08:57:18 - 09:07:42 | 4414 |
| Summerland | 09:02:30 | -20.4 | Dark | Up | 21.2 | 101.6 | Low | 08:57:18 - 09:07:42 | 4413 |
| Peachland | 09:02:31 | -20.2 | Dark | Up | 21.2 | 101.6 | Low | 08:57:19 - 09:07:43 | 4408 |
| Kelowna | 09:02:32 | -20.1 | Dark | Up | 21.3 | 101.9 | Low | 08:57:20 - 09:07:44 | 4393 |
| Clarence Fulton | 09:02:35 | -19.7 | Dark | Up | 21.4 | 102.2 | Low | 08:57:23 - 09:07:47 | 4366 |
| Dunrhomin | 09:01:22 | -24.6 | Dark | Up | 33.4 | 108.4 | Up | 08:56:10 - 09:06:34 | 4252 |
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 12LB27, (2022/05/13 08:59UT) Object RA Dec mag sep mel Vega 18:36:56.7 +38:47:07 0.0 43.54 87 Tarazed 19:46:15.6 +10:36:48 2.7 17.83 102 PPM 171106 21:00:04.0 +07:30:59 6.3 1.42 120 PPM 170990 20:56:05.3 +09:15:36 8.0 0.67 119 PPM 171064 20:58:31.3 +08:48:01 8.7 0.09 120 12LB27 20:58:16.5 +08:51:59 17.0 120 Positions are for J2000
Event circumstances last updated at 2021/10/04 01:51:05 UT
Marc W. Buie, Southwest Research Institute