Event between 15AJ281 and star GA0660:05413924 with event index number of 2644144
Geocentric closest approach at 2022/01/03 12:45:19 UTC
J2000 position of star is 11:10:36.4 -23:41:14
Equinox of date position of star is 11:11:41.1 -23:48:24
Stellar brightness G=14.7,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 110 degrees from the moon.
Moon is 1% illuminated.
TNO apparent brightness V=21.3
[RECON map]
TNO is 42.3 AU from the Sun
and 42.1 AU from the Earth.
The TNO is moving 13.0
km/sec on the sky relative to the star, or,
1.5 arcsec/hr.
The 1-sigma error in the time of the event is 164 seconds.
The 1-sigma cross-track error in the shadow position is
2150 km.
The sky-plane scale is
30513.3 km/arcsec.
The TNO has an absolute magnitude Hv=4.9
Diameter=633.9 km assuming a 5% albedo -- 48.9 sec chord
Diameter=258.8 km assuming a 30% albedo -- 19.9 sec chord
Dynamical classification is SCATEXTD
Star training set for 15AJ281, (2022/01/03 12:45UT) Object RA Dec mag sep mel Spica 13:26:21.3 -11:16:32 1.0 34.34 90 4Gam Crv 12:16:56.5 -17:39:50 2.6 16.43 102 11Bet Crt 11:12:44.6 -22:56:47 4.5 0.89 111 PPM 258556 11:07:56.2 -23:40:30 8.1 0.87 111 PPM 258646 11:11:26.5 -23:46:37 10.0 0.06 110 15AJ281 11:11:41.4 -23:48:25 14.7 110 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 13.7 km
RECON observability=0.7 and success probability=16.4%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Victoria | 12:39:08 | -33.1 | Dark | Down | 17.8 | 181.8 | Really Low | 12:24:58 - 12:53:17 | 1248 |
| Kamloops | 12:38:54 | -31.1 | Dark | Down | 15.5 | 184.6 | Really Low | 12:24:44 - 12:53:03 | 1125 |
| Peachland | 12:38:53 | -30.7 | Dark | Down | 16.4 | 185.2 | Really Low | 12:24:43 - 12:53:02 | 1068 |
| Summerland | 12:38:52 | -30.7 | Dark | Down | 16.5 | 185.3 | Really Low | 12:24:42 - 12:53:01 | 1059 |
| Kelowna | 12:38:52 | -30.5 | Dark | Down | 16.3 | 185.5 | Really Low | 12:24:42 - 12:53:01 | 1054 |
| Penticton | 12:38:52 | -30.6 | Dark | Down | 16.6 | 185.4 | Really Low | 12:24:42 - 12:53:01 | 1050 |
| Manson/Chelan | 12:38:57 | -31.0 | Dark | Down | 18.3 | 184.9 | Really Low | 12:24:48 - 12:53:07 | 1041 |
| Oliver | 12:38:54 | -30.6 | Dark | Down | 17.0 | 185.4 | Really Low | 12:24:44 - 12:53:03 | 1041 |
| Ellensburg | 12:39:01 | -31.2 | Dark | Down | 19.2 | 184.5 | Really Low | 12:24:51 - 12:53:10 | 1040 |
| The Dalles | 12:39:06 | -31.6 | Dark | Down | 20.6 | 184.0 | Low | 12:24:57 - 12:53:16 | 1038 |
| Wenatchee | 12:38:59 | -31.1 | Dark | Down | 18.8 | 184.7 | Really Low | 12:24:50 - 12:53:09 | 1038 |
| Yakima | 12:39:01 | -31.2 | Dark | Down | 19.6 | 184.5 | Really Low | 12:24:52 - 12:53:11 | 1029 |
| Anarchist Mountain Observatory | 12:38:54 | -30.4 | Dark | Down | 17.1 | 185.6 | Really Low | 12:24:44 - 12:53:03 | 1026 |
| Sisters | 12:39:09 | -31.8 | Dark | Down | 21.9 | 183.6 | Low | 12:25:00 - 12:53:19 | 1025 |
| Brewster | 12:38:56 | -30.7 | Dark | Down | 18.1 | 185.2 | Really Low | 12:24:47 - 12:53:06 | 1025 |
| Goldendale | 12:39:04 | -31.4 | Dark | Down | 20.4 | 184.3 | Low | 12:24:55 - 12:53:14 | 1023 |
| Tonasket | 12:38:52 | -30.5 | Dark | Down | 17.4 | 185.5 | Really Low | 12:24:42 - 12:53:01 | 1021 |
| Okanogan | 12:38:55 | -30.6 | Dark | Down | 17.8 | 185.4 | Really Low | 12:24:46 - 12:53:05 | 1020 |
| Maupin | 12:39:04 | -31.5 | Dark | Down | 21.0 | 184.1 | Low | 12:24:55 - 12:53:14 | 1020 |
| Toppenish/White Swan | 12:39:02 | -31.1 | Dark | Down | 19.8 | 184.7 | Really Low | 12:24:52 - 12:53:11 | 1012 |
| Oregon Observatory | 12:39:11 | -31.7 | Dark | Down | 22.3 | 183.8 | Low | 12:25:01 - 12:53:20 | 1005 |
| La Pine/Gilchrist | 12:39:10 | -31.8 | Dark | Down | 22.5 | 183.7 | Low | 12:25:00 - 12:53:19 | 1002 |
| Bend | 12:39:08 | -31.6 | Dark | Down | 22.2 | 183.9 | Low | 12:24:58 - 12:53:17 | 1001 |
| Redmond | 12:39:09 | -31.5 | Dark | Down | 21.9 | 184.0 | Low | 12:24:59 - 12:53:18 | 999 |
| Chiloquin | 12:39:14 | -32.0 | Dark | Down | 23.7 | 183.4 | Low | 12:25:04 - 12:53:23 | 991 |
| Klamath Falls | 12:39:15 | -31.9 | Dark | Down | 24.0 | 183.5 | Low | 12:25:05 - 12:53:24 | 974 |
| North Lake | 12:39:08 | -31.3 | Dark | Down | 22.9 | 184.3 | Low | 12:24:58 - 12:53:17 | 950 |
| Pasco | 12:38:57 | -30.2 | Dark | Down | 19.8 | 185.9 | Really Low | 12:24:47 - 12:53:06 | 931 |
| Fall River/Burney | 12:39:16 | -31.5 | Dark | Down | 25.2 | 183.9 | Low | 12:25:06 - 12:53:25 | 910 |
| PNWRO | 12:38:56 | -30.0 | Dark | Down | 20.1 | 186.1 | Low | 12:24:46 - 12:53:05 | 910 |
| Paisley | 12:39:09 | -31.0 | Dark | Down | 23.5 | 184.7 | Low | 12:24:59 - 12:53:18 | 909 |
| Lakeview | 12:39:10 | -30.8 | Dark | Down | 24.0 | 184.9 | Low | 12:25:01 - 12:53:20 | 880 |
| Greenville | 12:39:17 | -31.1 | Dark | Down | 26.0 | 184.4 | Low | 12:25:07 - 12:53:26 | 849 |
| Cedarville | 12:39:11 | -30.6 | Dark | Down | 24.6 | 185.1 | Low | 12:25:02 - 12:53:21 | 846 |
| Gimple | 12:39:17 | -31.0 | Dark | Down | 26.0 | 184.5 | Low | 12:25:08 - 12:53:27 | 844 |
| Quincy | 12:39:18 | -31.1 | Dark | Down | 26.2 | 184.4 | Low | 12:25:09 - 12:53:28 | 842 |
| Susanville | 12:39:16 | -30.9 | Dark | Down | 25.8 | 184.7 | Low | 12:25:06 - 12:53:25 | 839 |
| Portola | 12:39:17 | -30.7 | Dark | Down | 26.3 | 184.9 | Low | 12:25:07 - 12:53:26 | 806 |
| Reno | 12:39:15 | -30.2 | Dark | Down | 26.6 | 185.6 | Low | 12:25:05 - 12:53:24 | 751 |
| Carson City | 12:39:16 | -30.1 | Dark | Down | 26.9 | 185.6 | Low | 12:25:06 - 12:53:25 | 737 |
| Gardnerville | 12:39:16 | -30.1 | Dark | Down | 27.2 | 185.7 | Low | 12:25:06 - 12:53:25 | 725 |
| Yerington | 12:39:13 | -29.6 | Dark | Down | 27.1 | 186.3 | Low | 12:25:04 - 12:53:23 | 686 |
| CPSLO | 12:39:31 | -30.3 | Dark | Down | 30.8 | 185.0 | Up | 12:25:21 - 12:53:40 | 647 |
| Lee Vining | 12:39:16 | -29.5 | Dark | Down | 28.1 | 186.4 | Low | 12:25:06 - 12:53:25 | 644 |
| Hawthorne | 12:39:11 | -29.2 | Dark | Down | 27.5 | 186.9 | Low | 12:25:02 - 12:53:21 | 632 |
| Bishop | 12:39:14 | -28.8 | Dark | Down | 28.6 | 187.2 | Low | 12:25:05 - 12:53:24 | 569 |
| Tonopah | 12:39:08 | -28.0 | Dark | Down | 27.8 | 188.3 | Low | 12:24:58 - 12:53:17 | 514 |
| Wildwood | 12:39:25 | -28.5 | Dark | Down | 31.9 | 187.3 | Up | 12:25:16 - 12:53:35 | 448 |
| Beatty | 12:39:10 | -27.5 | Dark | Down | 28.9 | 188.9 | Low | 12:25:00 - 12:53:19 | 434 |
| Sleaford | 12:38:09 | -22.3 | Dark | Down | 12.4 | 197.9 | Really Low | 12:24:00 - 12:52:19 | 358 |
| Indian Springs | 12:39:06 | -26.6 | Dark | Down | 29.1 | 190.0 | Low | 12:24:57 - 12:53:16 | 342 |
| Idyllwild | 12:39:18 | -26.9 | Dark | Down | 32.0 | 189.3 | Up | 12:25:09 - 12:53:28 | 293 |
| Henderson | 12:39:05 | -25.9 | Dark | Down | 29.5 | 190.8 | Low | 12:24:55 - 12:53:14 | 269 |
| Laughlin/Bullhead City | 12:39:06 | -25.5 | Dark | Down | 30.3 | 191.3 | Up | 12:24:56 - 12:53:15 | 199 |
| Mohave Valley | 12:39:06 | -25.4 | Dark | Down | 30.5 | 191.4 | Up | 12:24:57 - 12:53:16 | 186 |
| Calipatria | 12:39:15 | -25.8 | Dark | Down | 32.4 | 190.6 | Up | 12:25:05 - 12:53:24 | 176 |
| Kingman/Dolan Springs | 12:39:04 | -25.0 | Dark | Down | 30.2 | 191.9 | Up | 12:24:54 - 12:53:13 | 163 |
| Patrick | 12:39:02 | -24.9 | Dark | Down | 29.9 | 192.0 | Low | 12:24:53 - 12:53:12 | 159 |
| Lake Havasu City | 12:39:07 | -25.1 | Dark | Down | 30.9 | 191.7 | Up | 12:24:57 - 12:53:16 | 150 |
| Parker | 12:39:08 | -25.0 | Dark | Down | 31.2 | 191.8 | Up | 12:24:58 - 12:53:17 | 131 |
| Blythe | 12:39:10 | -25.1 | Dark | Down | 31.8 | 191.5 | Up | 12:25:01 - 12:53:20 | 129 |
| Yuma | 12:39:13 | -25.0 | Dark | Down | 32.7 | 191.6 | Up | 12:25:03 - 12:53:22 | 88 |
| George/Scottsdale | 12:38:59 | -23.0 | Dark | Down | 31.2 | 194.3 | Up | 12:24:49 - 12:53:08 | -71 |
| Dunrhomin | 12:38:20 | -19.4 | Dark | Down | 23.4 | 199.8 | Low | 12:24:11 - 12:52:30 | -229 |
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 15AJ281, (2022/01/03 12:45UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 34.34 90 4Gam Crv 12:15:48.1 -17:32:30 2.6 16.43 102 11Bet Crt 11:11:39.5 -22:49:35 4.5 0.89 111 PPM 258556 11:06:51.4 -23:33:21 8.1 0.87 111 PPM 258646 11:10:21.5 -23:39:26 10.0 0.06 110 15AJ281 11:10:36.4 -23:41:14 14.7 110 Positions are for J2000
Event circumstances last updated at 2021/12/05 02:01:07 UT
Marc W. Buie, Southwest Research Institute