Event between (530955) 11YN79 and star GA1220:03447861 with event index number of 1600049
Geocentric closest approach at 2022/01/15 11:59:47 UTC
J2000 position of star is 09:54:31.7 +32:22:24
Equinox of date position of star is 09:55:48.6 +32:16:09
Stellar brightness G=16.4,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 53 degrees from the moon.
Moon is 94% illuminated.
TNO apparent brightness V=22.2
[RECON map]
TNO is 39.4 AU from the Sun
and 38.5 AU from the Earth.
The TNO is moving 22.8
km/sec on the sky relative to the star, or,
2.9 arcsec/hr.
The 1-sigma error in the time of the event is 111 seconds.
The 1-sigma cross-track error in the shadow position is
2095 km.
The sky-plane scale is
27950.1 km/arcsec.
The TNO has an absolute magnitude Hv=6.2
Diameter=348.3 km assuming a 5% albedo -- 15.3 sec chord
Diameter=142.2 km assuming a 30% albedo -- 6.2 sec chord
Dynamical classification is SCATNEAR
Star training set for 530955, (2022/01/15 12:04UT) Object RA Dec mag sep mel Regulus 10:09:32.6 +11:51:31 1.3 20.65 62 20 LMi 10:02:16.6 +31:48:52 5.4 1.44 54 PPM 074872 09:57:48.5 +32:16:45 7.0 0.42 53 PPM 074841 09:55:40.0 +32:09:05 9.1 0.12 53 530955 09:55:49.2 +32:16:06 16.4 53 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 12.0 km
RECON observability=1.0 and success probability=18.3%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 11:59:25 | -27.7 | Dark | Up | 55.0 | 251.8 | Up | 11:49:39 - 12:09:11 | 3215 |
| Dunrhomin | 11:58:32 | -26.8 | Dark | Up | 56.5 | 269.5 | Up | 11:48:46 - 12:08:18 | 2667 |
| Kamloops | 11:59:41 | -36.8 | Dark | Up | 63.6 | 236.0 | Up | 11:49:55 - 12:09:27 | 2416 |
| Kelowna | 11:59:36 | -36.4 | Dark | Up | 63.6 | 238.6 | Up | 11:49:50 - 12:09:22 | 2412 |
| Peachland | 11:59:36 | -36.6 | Dark | Up | 63.8 | 238.4 | Up | 11:49:50 - 12:09:22 | 2390 |
| Penticton | 11:59:35 | -36.5 | Dark | Up | 63.8 | 239.1 | Up | 11:49:49 - 12:09:21 | 2388 |
| Summerland | 11:59:36 | -36.5 | Dark | Up | 63.8 | 238.8 | Up | 11:49:50 - 12:09:22 | 2386 |
| Oliver | 11:59:34 | -36.5 | Dark | Up | 64.0 | 239.7 | Up | 11:49:48 - 12:09:20 | 2366 |
| Anarchist Mountain Observatory | 11:59:32 | -36.5 | Dark | Up | 64.0 | 240.2 | Up | 11:49:46 - 12:09:18 | 2366 |
| Tonasket | 11:59:32 | -36.6 | Dark | Up | 64.2 | 240.7 | Up | 11:49:46 - 12:09:18 | 2343 |
| Okanogan | 11:59:30 | -36.7 | Dark | Up | 64.4 | 241.1 | Up | 11:49:44 - 12:09:16 | 2314 |
| Brewster | 11:59:30 | -36.9 | Dark | Up | 64.7 | 241.3 | Up | 11:49:44 - 12:09:16 | 2286 |
| Manson/Chelan | 11:59:30 | -37.2 | Dark | Up | 65.0 | 241.2 | Up | 11:49:44 - 12:09:16 | 2254 |
| Wenatchee | 11:59:28 | -37.4 | Dark | Up | 65.3 | 241.8 | Up | 11:49:42 - 12:09:14 | 2214 |
| Pasco | 11:59:21 | -36.7 | Dark | Up | 65.1 | 245.7 | Up | 11:49:35 - 12:09:07 | 2206 |
| PNWRO | 11:59:20 | -36.6 | Dark | Up | 65.1 | 246.5 | Up | 11:49:34 - 12:09:06 | 2203 |
| Ellensburg | 11:59:27 | -37.6 | Dark | Up | 65.6 | 242.3 | Up | 11:49:41 - 12:09:13 | 2176 |
| Yakima | 11:59:25 | -37.7 | Dark | Up | 65.9 | 243.0 | Up | 11:49:39 - 12:09:11 | 2149 |
| Toppenish/White Swan | 11:59:25 | -37.6 | Dark | Up | 65.8 | 243.7 | Up | 11:49:39 - 12:09:11 | 2144 |
| Victoria | 11:59:38 | -39.2 | Dark | Up | 66.5 | 235.0 | Up | 11:49:52 - 12:09:24 | 2124 |
| Goldendale | 11:59:23 | -38.0 | Dark | Up | 66.4 | 244.2 | Up | 11:49:37 - 12:09:09 | 2085 |
| The Dalles | 11:59:23 | -38.2 | Dark | Up | 66.7 | 244.2 | Up | 11:49:37 - 12:09:09 | 2050 |
| Maupin | 11:59:21 | -38.2 | Dark | Up | 66.8 | 245.2 | Up | 11:49:35 - 12:09:07 | 2028 |
| Redmond | 11:59:18 | -38.4 | Dark | Up | 67.2 | 247.0 | Up | 11:49:32 - 12:09:04 | 1963 |
| Sisters | 11:59:19 | -38.7 | Dark | Up | 67.5 | 246.4 | Up | 11:49:33 - 12:09:05 | 1942 |
| Bend | 11:59:18 | -38.6 | Dark | Up | 67.4 | 247.3 | Up | 11:49:32 - 12:09:04 | 1941 |
| Oregon Observatory | 11:59:17 | -38.7 | Dark | Up | 67.6 | 247.5 | Up | 11:49:31 - 12:09:03 | 1922 |
| North Lake | 11:59:14 | -38.4 | Dark | Up | 67.4 | 249.6 | Up | 11:49:28 - 12:09:00 | 1910 |
| La Pine/Gilchrist | 11:59:17 | -38.8 | Dark | Up | 67.7 | 247.9 | Up | 11:49:31 - 12:09:03 | 1904 |
| Paisley | 11:59:11 | -38.2 | Dark | Up | 67.4 | 251.3 | Up | 11:49:25 - 12:08:57 | 1893 |
| Lakeview | 11:59:08 | -38.1 | Dark | Up | 67.4 | 252.7 | Up | 11:49:22 - 12:08:54 | 1870 |
| George/Scottsdale | 11:58:18 | -31.5 | Dark | Up | 61.6 | 276.9 | Up | 11:48:32 - 12:08:04 | 1837 |
| Cedarville | 11:59:06 | -38.0 | Dark | Up | 67.5 | 254.4 | Up | 11:49:20 - 12:08:52 | 1836 |
| Patrick | 11:58:28 | -33.3 | Dark | Up | 63.3 | 272.8 | Up | 11:48:42 - 12:08:14 | 1817 |
| Chiloquin | 11:59:13 | -39.2 | Dark | Up | 68.3 | 249.9 | Up | 11:49:27 - 12:08:59 | 1808 |
| Kingman/Dolan Springs | 11:58:28 | -33.4 | Dark | Up | 63.5 | 273.1 | Up | 11:48:42 - 12:08:14 | 1790 |
| Klamath Falls | 11:59:12 | -39.1 | Dark | Up | 68.4 | 250.8 | Up | 11:49:26 - 12:08:58 | 1789 |
| Henderson | 11:58:33 | -34.2 | Dark | Up | 64.3 | 270.9 | Up | 11:48:47 - 12:08:19 | 1786 |
| Tonopah | 11:58:46 | -36.0 | Dark | Up | 65.9 | 265.1 | Up | 11:49:00 - 12:08:32 | 1781 |
| Indian Springs | 11:58:37 | -34.8 | Dark | Up | 64.8 | 269.4 | Up | 11:48:51 - 12:08:23 | 1777 |
| Laughlin/Bullhead City | 11:58:29 | -33.8 | Dark | Up | 63.9 | 272.9 | Up | 11:48:43 - 12:08:15 | 1754 |
| Mohave Valley | 11:58:28 | -33.8 | Dark | Up | 63.9 | 273.5 | Up | 11:48:42 - 12:08:14 | 1736 |
| Susanville | 11:59:02 | -38.5 | Dark | Up | 68.1 | 256.5 | Up | 11:49:16 - 12:08:48 | 1731 |
| Beatty | 11:58:41 | -35.6 | Dark | Up | 65.7 | 268.0 | Up | 11:48:55 - 12:08:27 | 1730 |
| Fall River/Burney | 11:59:07 | -39.0 | Dark | Up | 68.5 | 254.1 | Up | 11:49:21 - 12:08:53 | 1730 |
| Lake Havasu City | 11:58:26 | -33.6 | Dark | Up | 63.7 | 274.4 | Up | 11:48:40 - 12:08:12 | 1725 |
| Hawthorne | 11:58:51 | -37.1 | Dark | Up | 67.0 | 262.9 | Up | 11:49:05 - 12:08:37 | 1724 |
| Yerington | 11:58:54 | -37.5 | Dark | Up | 67.3 | 261.4 | Up | 11:49:08 - 12:08:40 | 1723 |
| Reno | 11:58:57 | -37.9 | Dark | Up | 67.7 | 259.4 | Up | 11:49:11 - 12:08:43 | 1721 |
| Parker | 11:58:25 | -33.6 | Dark | Up | 63.6 | 275.1 | Up | 11:48:39 - 12:08:11 | 1703 |
| Portola | 11:59:00 | -38.4 | Dark | Up | 68.1 | 258.1 | Up | 11:49:14 - 12:08:46 | 1700 |
| Gimple | 11:59:02 | -38.7 | Dark | Up | 68.4 | 256.9 | Up | 11:49:16 - 12:08:48 | 1699 |
| Carson City | 11:58:56 | -37.9 | Dark | Up | 67.8 | 260.3 | Up | 11:49:10 - 12:08:42 | 1698 |
| Greenville | 11:59:02 | -38.7 | Dark | Up | 68.4 | 256.8 | Up | 11:49:16 - 12:08:48 | 1694 |
| Gardnerville | 11:58:55 | -37.9 | Dark | Up | 67.8 | 260.9 | Up | 11:49:09 - 12:08:41 | 1684 |
| Quincy | 11:59:01 | -38.8 | Dark | Up | 68.5 | 257.3 | Up | 11:49:15 - 12:08:47 | 1680 |
| Bishop | 11:58:46 | -36.9 | Dark | Up | 66.9 | 265.8 | Up | 11:49:00 - 12:08:32 | 1659 |
| Lee Vining | 11:58:50 | -37.5 | Dark | Up | 67.4 | 263.8 | Up | 11:49:04 - 12:08:36 | 1655 |
| Blythe | 11:58:23 | -33.8 | Dark | Up | 63.8 | 276.0 | Up | 11:48:37 - 12:08:09 | 1647 |
| Yuma | 11:58:20 | -33.7 | Dark | Up | 63.8 | 277.9 | Up | 11:48:34 - 12:08:06 | 1581 |
| Calipatria | 11:58:23 | -34.5 | Dark | Up | 64.5 | 276.7 | Up | 11:48:37 - 12:08:09 | 1550 |
| Idyllwild | 11:58:28 | -35.5 | Dark | Up | 65.6 | 275.0 | Up | 11:48:42 - 12:08:14 | 1514 |
| Wildwood | 11:58:34 | -37.1 | Dark | Up | 67.1 | 273.4 | Up | 11:48:48 - 12:08:20 | 1415 |
| CPSLO | 11:58:44 | -38.8 | Dark | Up | 68.8 | 269.3 | Up | 11:48:58 - 12:08:30 | 1368 |
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 530955, (2022/01/15 12:04UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 20.65 62 20 LMi 10:00:59.8 +31:55:16 5.4 1.44 54 PPM 074872 09:56:31.3 +32:23:05 7.0 0.42 53 PPM 074841 09:54:22.6 +32:15:23 9.1 0.12 53 530955 09:54:31.7 +32:22:24 16.4 53 Positions are for J2000
Event circumstances last updated at 2021/11/15 00:45:55 UT
Marc W. Buie, Southwest Research Institute