Event between (525815) 05SD278 and star GA0920:00430891 with event index number of 2116735
Geocentric closest approach at 2022/12/23 06:58:31 UTC
J2000 position of star is 04:31:24.9 +03:30:21
Equinox of date position of star is 04:32:36.6 +03:33:12
Stellar brightness G=13.3,
use SENSEUP=32 with the MallinCam and and exposure
time of 500 milli-seconds with the QHY174 camera.
Star is 149 degrees from the moon.
Moon is 0% illuminated.
TNO apparent brightness V=22.8
[RECON map]
TNO is 44.2 AU from the Sun
and 43.3 AU from the Earth.
The TNO is moving 23.1
km/sec on the sky relative to the star, or,
2.6 arcsec/hr.
The 1-sigma error in the time of the event is 165 seconds.
The 1-sigma cross-track error in the shadow position is
1759 km.
The sky-plane scale is
31409.8 km/arcsec.
The TNO has an absolute magnitude Hv=6.3
Diameter=346.7 km assuming a 5% albedo -- 14.4 sec chord
Diameter=141.6 km assuming a 30% albedo -- 5.9 sec chord
Dynamical classification is SCATNEAR
Star training set for 525815, (2022/12/23 06:59UT) Object RA Dec mag sep mel Aldebaran 04:37:14.5 +16:33:13 0.8 13.05 158 67Bet Eri 05:08:58.8 -05:03:30 2.8 12.51 146 PPM 147685 04:35:21.7 +05:36:55 5.8 2.17 151 PPM 147588 04:30:02.2 +02:25:14 8.4 1.30 147 PPM 147625 04:32:08.1 +03:31:08 9.0 0.13 149 525815 04:32:37.3 +03:33:13 13.3 149 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 24.7 km
RECON observability=1.0 and success probability=25.2%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 06:57:31 | -61.3 | Dark | Down | 38.0 | 208.9 | Up | 06:43:15 - 07:11:48 | 26 |
| Kamloops | 06:58:11 | -60.2 | Dark | Down | 42.3 | 191.0 | Up | 06:43:55 - 07:12:28 | -114 |
| Kelowna | 06:58:08 | -61.2 | Dark | Down | 43.0 | 192.4 | Up | 06:43:52 - 07:12:25 | -174 |
| Peachland | 06:58:09 | -61.2 | Dark | Down | 43.2 | 192.0 | Up | 06:43:52 - 07:12:25 | -183 |
| Summerland | 06:58:09 | -61.4 | Dark | Down | 43.3 | 192.1 | Up | 06:43:52 - 07:12:25 | -194 |
| Penticton | 06:58:08 | -61.4 | Dark | Down | 43.4 | 192.3 | Up | 06:43:52 - 07:12:25 | -199 |
| Oliver | 06:58:08 | -61.8 | Dark | Down | 43.7 | 192.4 | Up | 06:43:52 - 07:12:25 | -226 |
| Anarchist Mountain Observatory | 06:58:07 | -62.0 | Dark | Down | 43.8 | 192.7 | Up | 06:43:51 - 07:12:24 | -238 |
| Tonasket | 06:58:07 | -62.2 | Dark | Down | 44.1 | 192.6 | Up | 06:43:51 - 07:12:24 | -263 |
| Victoria | 06:58:20 | -60.9 | Dark | Down | 44.8 | 187.2 | Up | 06:44:03 - 07:12:36 | -285 |
| Okanogan | 06:58:08 | -62.5 | Dark | Down | 44.5 | 192.5 | Up | 06:43:51 - 07:12:24 | -290 |
| Brewster | 06:58:08 | -62.6 | Dark | Down | 44.8 | 192.3 | Up | 06:43:52 - 07:12:25 | -312 |
| Manson/Chelan | 06:58:09 | -62.7 | Dark | Down | 45.0 | 191.8 | Up | 06:43:53 - 07:12:26 | -329 |
| Wenatchee | 06:58:09 | -63.0 | Dark | Down | 45.5 | 191.7 | Up | 06:43:53 - 07:12:26 | -367 |
| Ellensburg | 06:58:10 | -63.3 | Dark | Down | 46.0 | 191.5 | Up | 06:43:53 - 07:12:26 | -401 |
| Yakima | 06:58:10 | -63.6 | Dark | Down | 46.4 | 191.5 | Up | 06:43:53 - 07:12:26 | -433 |
| Toppenish/White Swan | 06:58:09 | -63.8 | Dark | Down | 46.6 | 191.8 | Up | 06:43:53 - 07:12:26 | -451 |
| PNWRO | 06:58:04 | -64.7 | Dark | Down | 46.7 | 194.0 | Up | 06:43:47 - 07:12:20 | -477 |
| Goldendale | 06:58:10 | -64.1 | Dark | Down | 47.2 | 191.3 | Up | 06:43:54 - 07:12:27 | -497 |
| The Dalles | 06:58:11 | -64.2 | Dark | Down | 47.4 | 190.8 | Up | 06:43:55 - 07:12:28 | -516 |
| Maupin | 06:58:11 | -64.5 | Dark | Down | 47.8 | 191.1 | Up | 06:43:54 - 07:12:27 | -550 |
| Sisters | 06:58:12 | -65.0 | Dark | Down | 48.8 | 190.5 | Up | 06:43:56 - 07:12:29 | -624 |
| Bend | 06:58:11 | -65.3 | Dark | Down | 49.0 | 191.0 | Up | 06:43:54 - 07:12:27 | -644 |
| Oregon Observatory | 06:58:11 | -65.4 | Dark | Down | 49.1 | 190.8 | Up | 06:43:55 - 07:12:28 | -659 |
| North Lake | 06:58:09 | -66.2 | Dark | Down | 49.7 | 191.8 | Up | 06:43:53 - 07:12:26 | -712 |
| Chiloquin | 06:58:12 | -66.2 | Dark | Down | 50.5 | 190.5 | Up | 06:43:56 - 07:12:29 | -772 |
| Klamath Falls | 06:58:12 | -66.5 | Dark | Down | 50.8 | 190.7 | Up | 06:43:55 - 07:12:28 | -801 |
| Lakeview | 06:58:07 | -67.2 | Dark | Down | 50.6 | 192.9 | Up | 06:43:50 - 07:12:23 | -801 |
| Cedarville | 06:58:06 | -67.8 | Dark | Down | 51.3 | 193.3 | Up | 06:43:49 - 07:12:22 | -858 |
| Fall River/Burney | 06:58:10 | -67.6 | Dark | Down | 51.9 | 191.5 | Up | 06:43:53 - 07:12:26 | -903 |
| Dunrhomin | 06:57:13 | -73.2 | Dark | Down | 47.8 | 215.6 | Up | 06:42:56 - 07:11:29 | -925 |
| CU-SBO | 06:57:13 | -73.4 | Dark | Down | 48.0 | 215.6 | Up | 06:42:56 - 07:11:29 | -948 |
| Susanville | 06:58:07 | -68.4 | Dark | Down | 52.4 | 192.9 | Up | 06:43:50 - 07:12:23 | -957 |
| Greenville | 06:58:08 | -68.5 | Dark | Down | 52.7 | 192.5 | Up | 06:43:51 - 07:12:24 | -982 |
| Gimple | 06:58:08 | -68.5 | Dark | Down | 52.7 | 192.6 | Up | 06:43:51 - 07:12:24 | -983 |
| Quincy | 06:58:08 | -68.6 | Dark | Down | 52.9 | 192.5 | Up | 06:43:51 - 07:12:24 | -1001 |
| Portola | 06:58:06 | -68.9 | Dark | Down | 53.0 | 193.4 | Up | 06:43:50 - 07:12:23 | -1010 |
| Reno | 06:58:03 | -69.5 | Dark | Down | 53.1 | 194.5 | Up | 06:43:47 - 07:12:20 | -1033 |
| Carson City | 06:58:03 | -69.7 | Dark | Down | 53.5 | 194.6 | Up | 06:43:47 - 07:12:20 | -1065 |
| Yerington | 06:58:01 | -70.2 | Dark | Down | 53.5 | 195.7 | Up | 06:43:44 - 07:12:17 | -1081 |
| Gardnerville | 06:58:03 | -69.9 | Dark | Down | 53.7 | 194.8 | Up | 06:43:46 - 07:12:19 | -1087 |
| Hawthorne | 06:57:59 | -70.8 | Dark | Down | 53.9 | 196.8 | Up | 06:43:42 - 07:12:15 | -1122 |
| Tonopah | 06:57:53 | -71.9 | Dark | Down | 54.0 | 199.3 | Up | 06:43:37 - 07:12:10 | -1160 |
| Lee Vining | 06:58:00 | -71.0 | Dark | Down | 54.5 | 196.2 | Up | 06:43:44 - 07:12:17 | -1174 |
| Bishop | 06:57:57 | -71.8 | Dark | Down | 54.9 | 197.6 | Up | 06:43:41 - 07:12:14 | -1227 |
| Beatty | 06:57:51 | -73.0 | Dark | Down | 54.9 | 200.5 | Up | 06:43:34 - 07:12:07 | -1266 |
| Indian Springs | 06:57:46 | -73.8 | Dark | Down | 54.9 | 202.5 | Up | 06:43:30 - 07:12:03 | -1293 |
| Henderson | 06:57:44 | -74.6 | Dark | Down | 55.2 | 203.9 | Up | 06:43:27 - 07:12:00 | -1341 |
| Patrick | 06:57:39 | -75.6 | Dark | Down | 55.4 | 206.1 | Up | 06:43:22 - 07:11:55 | -1396 |
| Kingman/Dolan Springs | 06:57:39 | -75.7 | Dark | Down | 55.7 | 205.9 | Up | 06:43:23 - 07:11:56 | -1417 |
| Laughlin/Bullhead City | 06:57:41 | -75.5 | Dark | Down | 55.9 | 205.1 | Up | 06:43:25 - 07:11:58 | -1421 |
| Mohave Valley | 06:57:41 | -75.7 | Dark | Down | 56.1 | 205.3 | Up | 06:43:25 - 07:11:58 | -1447 |
| Lake Havasu City | 06:57:40 | -76.1 | Dark | Down | 56.4 | 205.9 | Up | 06:43:23 - 07:11:56 | -1484 |
| Parker | 06:57:39 | -76.4 | Dark | Down | 56.7 | 206.2 | Up | 06:43:23 - 07:11:56 | -1517 |
| Wildwood | 06:57:56 | -73.9 | Dark | Down | 58.1 | 198.8 | Up | 06:43:40 - 07:12:13 | -1534 |
| George/Scottsdale | 06:57:30 | -77.9 | Dark | Down | 56.1 | 210.5 | Up | 06:43:13 - 07:11:46 | -1550 |
| Idyllwild | 06:57:49 | -75.3 | Dark | Down | 57.9 | 202.4 | Up | 06:43:32 - 07:12:05 | -1563 |
| Calipatria | 06:57:44 | -76.4 | Dark | Down | 58.0 | 204.8 | Up | 06:43:27 - 07:12:00 | -1618 |
| Yuma | 06:57:40 | -77.3 | Dark | Down | 58.1 | 206.7 | Up | 06:43:23 - 07:11:56 | -1657 |
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 525815, (2022/12/23 06:59UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 13.05 158 67Bet Eri 05:07:50.8 -05:05:13 2.8 12.51 146 PPM 147685 04:34:08.2 +05:34:08 5.8 2.17 151 PPM 147588 04:28:50.3 +02:22:16 8.4 1.30 147 PPM 147625 04:30:55.7 +03:28:14 9.0 0.13 149 525815 04:31:24.9 +03:30:21 13.3 149 Positions are for J2000
Event circumstances last updated at 2022/10/03 04:14:41 UT
Marc W. Buie, Southwest Research Institute