Event between (84522) 02TC302 and star GA1220:00457667 with event index number of 1146786
Geocentric closest approach at 2021/11/11 02:54:58 UTC
J2000 position of star is 02:41:17.3 +33:00:00
Equinox of date position of star is 02:42:34.7 +33:05:24
Stellar brightness G=11.7,
use SENSEUP=8 with the MallinCam and and exposure
time of 125 milli-seconds with the QHY174 camera.
Star is 96 degrees from the moon.
Moon is 46% illuminated.
TNO apparent brightness V=20.4
[RECON map]
TNO is 43.7 AU from the Sun
and 42.8 AU from the Earth.
The TNO is moving 26.0
km/sec on the sky relative to the star, or,
3.0 arcsec/hr.
The 1-sigma error in the time of the event is 63 seconds.
The 1-sigma cross-track error in the shadow position is
1681 km.
The sky-plane scale is
31013.0 km/arcsec.
The TNO has an absolute magnitude Hv=4.0
Diameter=977.3 km assuming a 5% albedo -- 37.5 sec chord
Diameter=399.0 km assuming a 30% albedo -- 15.3 sec chord
Dynamical classification is 5:2EEE
Star training set for 84522, (2021/11/11 02:55UT) Object RA Dec mag sep mel Aldebaran 04:37:10.7 +16:33:05 0.8 30.64 115 Algol 03:09:36.0 +41:02:18 2.1 9.59 103 17 Per 02:52:52.1 +35:08:54 5.8 2.95 98 PPM 067650 02:44:01.1 +32:59:36 7.6 0.31 96 84522 02:42:36.9 +33:05:33 11.7 96 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 18.6 km
RECON observability=1.0 and success probability=22.4%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Victoria | 02:57:00 | -22.7 | Dark | Up | 37.4 | 80.2 | Up | 02:51:14 - 03:02:45 | 2198 |
| Clarence Fulton | 02:56:50 | -25.4 | Dark | Up | 40.2 | 84.4 | Up | 02:51:05 - 03:02:36 | 2129 |
| Peachland | 02:56:53 | -25.1 | Dark | Up | 39.9 | 83.6 | Up | 02:51:07 - 03:02:38 | 2118 |
| Kelowna | 02:56:52 | -25.3 | Dark | Up | 40.1 | 83.9 | Up | 02:51:06 - 03:02:37 | 2112 |
| Summerland | 02:56:53 | -25.2 | Dark | Up | 39.9 | 83.6 | Up | 02:51:08 - 03:02:39 | 2105 |
| Penticton | 02:56:53 | -25.2 | Dark | Up | 40.0 | 83.6 | Up | 02:51:08 - 03:02:39 | 2096 |
| Oliver | 02:56:55 | -25.3 | Dark | Up | 40.0 | 83.3 | Up | 02:51:09 - 03:02:40 | 2075 |
| Anarchist Mountain Observatory | 02:56:55 | -25.4 | Dark | Up | 40.1 | 83.3 | Up | 02:51:09 - 03:02:40 | 2056 |
| Tonasket | 02:56:56 | -25.4 | Dark | Up | 40.0 | 83.0 | Up | 02:51:11 - 03:02:42 | 2040 |
| Okanogan | 02:56:57 | -25.3 | Dark | Up | 39.9 | 82.6 | Up | 02:51:12 - 03:02:43 | 2026 |
| Manson/Chelan | 02:57:00 | -24.9 | Dark | Up | 39.4 | 81.8 | Up | 02:51:14 - 03:02:45 | 2020 |
| Brewster | 02:56:58 | -25.1 | Dark | Up | 39.7 | 82.2 | Up | 02:51:13 - 03:02:44 | 2017 |
| Wenatchee | 02:57:01 | -24.8 | Dark | Up | 39.2 | 81.3 | Up | 02:51:16 - 03:02:47 | 1998 |
| Ellensburg | 02:57:03 | -24.7 | Dark | Up | 39.0 | 80.9 | Up | 02:51:17 - 03:02:48 | 1982 |
| Yakima | 02:57:04 | -24.7 | Dark | Up | 39.0 | 80.5 | Up | 02:51:19 - 03:02:50 | 1957 |
| Toppenish/White Swan | 02:57:05 | -24.8 | Dark | Up | 39.0 | 80.5 | Up | 02:51:20 - 03:02:51 | 1936 |
| The Dalles | 02:57:08 | -24.2 | Dark | Up | 38.4 | 79.4 | Up | 02:51:23 - 03:02:54 | 1922 |
| Goldendale | 02:57:07 | -24.5 | Dark | Up | 38.7 | 79.8 | Up | 02:51:22 - 03:02:53 | 1920 |
| Maupin | 02:57:10 | -24.3 | Dark | Up | 38.4 | 79.1 | Up | 02:51:24 - 03:02:55 | 1890 |
| Pasco | 02:57:05 | -25.7 | Dark | Up | 39.9 | 81.2 | Up | 02:51:19 - 03:02:50 | 1871 |
| Sisters | 02:57:13 | -24.0 | Dark | Up | 37.9 | 78.2 | Up | 02:51:28 - 03:02:59 | 1856 |
| PNWRO | 02:57:05 | -25.8 | Dark | Up | 40.0 | 81.1 | Up | 02:51:19 - 03:02:50 | 1845 |
| Redmond | 02:57:13 | -24.2 | Dark | Up | 38.1 | 78.4 | Up | 02:51:27 - 03:02:58 | 1836 |
| Bend | 02:57:14 | -24.1 | Dark | Up | 38.0 | 78.1 | Up | 02:51:28 - 03:02:59 | 1828 |
| Oregon Observatory | 02:57:14 | -24.0 | Dark | Up | 37.9 | 77.9 | Up | 02:51:29 - 03:03:00 | 1823 |
| La Pine/Gilchrist | 02:57:15 | -24.0 | Dark | Up | 37.8 | 77.7 | Up | 02:51:30 - 03:03:01 | 1813 |
| North Lake | 02:57:16 | -24.4 | Dark | Up | 38.1 | 77.7 | Up | 02:51:30 - 03:03:01 | 1756 |
| Chiloquin | 02:57:19 | -23.7 | Dark | Up | 37.3 | 76.7 | Up | 02:51:34 - 03:03:05 | 1756 |
| Klamath Falls | 02:57:20 | -23.8 | Dark | Up | 37.3 | 76.5 | Up | 02:51:35 - 03:03:06 | 1729 |
| Paisley | 02:57:17 | -24.7 | Dark | Up | 38.3 | 77.5 | Up | 02:51:32 - 03:03:03 | 1702 |
| Lakeview | 02:57:19 | -24.8 | Dark | Up | 38.3 | 77.2 | Up | 02:51:34 - 03:03:05 | 1658 |
| Fall River/Burney | 02:57:24 | -24.0 | Dark | Up | 37.3 | 75.8 | Up | 02:51:38 - 03:03:09 | 1630 |
| Cedarville | 02:57:21 | -24.9 | Dark | Up | 38.3 | 76.8 | Up | 02:51:36 - 03:03:07 | 1604 |
| Susanville | 02:57:25 | -24.5 | Dark | Up | 37.7 | 75.8 | Up | 02:51:39 - 03:03:10 | 1550 |
| Greenville | 02:57:26 | -24.3 | Dark | Up | 37.4 | 75.4 | Up | 02:51:41 - 03:03:12 | 1545 |
| Gimple | 02:57:26 | -24.4 | Dark | Up | 37.5 | 75.4 | Up | 02:51:41 - 03:03:12 | 1541 |
| Quincy | 02:57:27 | -24.3 | Dark | Up | 37.4 | 75.3 | Up | 02:51:41 - 03:03:12 | 1531 |
| Portola | 02:57:27 | -24.7 | Dark | Up | 37.7 | 75.4 | Up | 02:51:41 - 03:03:12 | 1499 |
| Reno | 02:57:27 | -25.1 | Dark | Up | 38.1 | 75.5 | Up | 02:51:42 - 03:03:13 | 1448 |
| Carson City | 02:57:28 | -25.2 | Dark | Up | 38.0 | 75.3 | Up | 02:51:43 - 03:03:14 | 1421 |
| Gardnerville | 02:57:29 | -25.2 | Dark | Up | 38.0 | 75.1 | Up | 02:51:43 - 03:03:14 | 1401 |
| Yerington | 02:57:28 | -25.6 | Dark | Up | 38.5 | 75.4 | Up | 02:51:43 - 03:03:14 | 1375 |
| Hawthorne | 02:57:29 | -26.0 | Dark | Up | 38.7 | 75.3 | Up | 02:51:44 - 03:03:15 | 1315 |
| Lee Vining | 02:57:31 | -25.6 | Dark | Up | 38.2 | 74.6 | Up | 02:51:46 - 03:03:17 | 1299 |
| Bishop | 02:57:32 | -26.2 | Dark | Up | 38.6 | 74.5 | Up | 02:51:47 - 03:03:18 | 1217 |
| Tonopah | 02:57:29 | -27.1 | Dark | Up | 39.7 | 75.6 | Up | 02:51:43 - 03:03:14 | 1209 |
| CPSLO | 02:57:41 | -24.3 | Dark | Up | 36.3 | 72.1 | Up | 02:51:55 - 03:03:26 | 1180 |
| Beatty | 02:57:32 | -27.5 | Dark | Up | 39.8 | 74.9 | Up | 02:51:46 - 03:03:17 | 1099 |
| Indian Springs | 02:57:31 | -28.3 | Dark | Up | 40.5 | 75.0 | Up | 02:51:46 - 03:03:17 | 1018 |
| Wildwood | 02:57:42 | -25.9 | Dark | Up | 37.6 | 72.0 | Up | 02:51:57 - 03:03:28 | 980 |
| Henderson | 02:57:32 | -28.9 | Dark | Up | 40.9 | 74.9 | Up | 02:51:47 - 03:03:18 | 941 |
| Idyllwild | 02:57:41 | -27.4 | Dark | Up | 38.9 | 72.4 | Up | 02:51:55 - 03:03:26 | 852 |
| Laughlin/Bullhead City | 02:57:34 | -29.2 | Dark | Up | 41.0 | 74.3 | Up | 02:51:49 - 03:03:20 | 851 |
| Patrick | 02:57:33 | -29.8 | Dark | Up | 41.6 | 74.8 | Up | 02:51:47 - 03:03:18 | 834 |
| Mohave Valley | 02:57:35 | -29.2 | Dark | Up | 41.0 | 74.1 | Up | 02:51:49 - 03:03:20 | 830 |
| Kingman/Dolan Springs | 02:57:33 | -29.6 | Dark | Up | 41.4 | 74.5 | Up | 02:51:48 - 03:03:19 | 826 |
| Dunrhomin | 02:57:05 | -36.3 | Dark | Up | 49.2 | 83.6 | Up | 02:51:20 - 03:02:51 | 790 |
| Lake Havasu City | 02:57:36 | -29.4 | Dark | Up | 41.0 | 73.9 | Up | 02:51:50 - 03:03:21 | 785 |
| Parker | 02:57:37 | -29.4 | Dark | Up | 41.0 | 73.6 | Up | 02:51:51 - 03:03:22 | 755 |
| Calipatria | 02:57:41 | -28.3 | Dark | Up | 39.7 | 72.3 | Up | 02:51:56 - 03:03:27 | 740 |
| Blythe | 02:57:39 | -29.1 | Dark | Up | 40.6 | 73.0 | Up | 02:51:53 - 03:03:24 | 729 |
| Yuma | 02:57:41 | -29.1 | Dark | Up | 40.3 | 72.3 | Up | 02:51:56 - 03:03:27 | 657 |
| George/Scottsdale | 02:57:35 | -31.4 | Dark | Up | 42.8 | 74.1 | Up | 02:51:49 - 03:03:20 | 593 |
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 84522, (2021/11/11 02:55UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 30.64 115 Algol 03:08:10.1 +40:57:20 2.1 9.59 103 17 Per 02:51:30.9 +35:03:34 5.8 2.95 98 PPM 067650 02:42:41.5 +32:54:04 7.6 0.31 96 84522 02:41:17.3 +33:00:00 11.7 96 Positions are for J2000
Event circumstances last updated at 2021/04/10 00:47:41 UT
Marc W. Buie, Southwest Research Institute