Event between (523624) 08CT190 and star GA1260:03562964 with event index number of 1136462
Geocentric closest approach at 2021/12/26 10:05:25 UTC
J2000 position of star is 12:22:58.5 +37:08:44
Equinox of date position of star is 12:24:01.2 +37:01:44
Stellar brightness G=12.0,
use SENSEUP=16 with the MallinCam and and exposure
time of 250 milli-seconds with the QHY174 camera.
Star is 32 degrees from the moon.
Moon is 57% illuminated.
TNO apparent brightness V=21.4
[RECON map]
TNO is 35.2 AU from the Sun
and 35.0 AU from the Earth.
The TNO is moving 18.8
km/sec on the sky relative to the star, or,
2.7 arcsec/hr.
The 1-sigma error in the time of the event is 86 seconds.
The 1-sigma cross-track error in the shadow position is
3197 km.
The sky-plane scale is
25386.2 km/arcsec.
The TNO has an absolute magnitude Hv=5.8
Diameter=416.9 km assuming a 5% albedo -- 22.2 sec chord
Diameter=170.2 km assuming a 30% albedo -- 9.0 sec chord
Dynamical classification is SCATNEAR
Star training set for 523624, (2021/12/26 10:05UT) Object RA Dec mag sep mel Arcturus 14:16:40.0 +19:04:10 0.0 30.45 37 Phad 11:54:58.6 +53:34:21 2.4 17.30 48 6 CVn 12:26:55.7 +38:53:49 5.0 1.96 34 PPM 076426 12:22:09.5 +37:54:07 8.3 0.96 33 PPM 076472 12:26:11.7 +37:05:58 9.6 0.43 32 523624 12:24:03.9 +37:01:26 12.0 32 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 4.6 km
RECON observability=1.0 and success probability=9.4%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| CPSLO | 10:05:16 | -61.0 | Dark | Up | 42.4 | 69.2 | Up | 09:57:38 - 10:12:54 | 1477 |
| Wildwood | 10:05:06 | -59.7 | Dark | Up | 43.5 | 68.7 | Up | 09:57:28 - 10:12:44 | 1381 |
| Quincy | 10:05:42 | -59.5 | Dark | Up | 43.8 | 73.2 | Up | 09:58:04 - 10:13:20 | 1373 |
| Greenville | 10:05:43 | -59.5 | Dark | Up | 43.8 | 73.4 | Up | 09:58:05 - 10:13:21 | 1367 |
| Fall River/Burney | 10:05:49 | -59.4 | Dark | Up | 43.8 | 74.1 | Up | 09:58:11 - 10:13:27 | 1363 |
| Gimple | 10:05:43 | -59.4 | Dark | Up | 43.9 | 73.5 | Up | 09:58:05 - 10:13:21 | 1362 |
| Portola | 10:05:40 | -59.3 | Dark | Up | 44.1 | 73.3 | Up | 09:58:02 - 10:13:18 | 1350 |
| Klamath Falls | 10:05:55 | -59.1 | Dark | Up | 43.8 | 75.0 | Up | 09:58:17 - 10:13:33 | 1345 |
| Susanville | 10:05:44 | -59.1 | Dark | Up | 44.1 | 73.8 | Up | 09:58:06 - 10:13:22 | 1343 |
| Gardnerville | 10:05:35 | -59.1 | Dark | Up | 44.4 | 72.8 | Up | 09:57:57 - 10:13:13 | 1335 |
| Carson City | 10:05:36 | -59.0 | Dark | Up | 44.4 | 73.0 | Up | 09:57:58 - 10:13:14 | 1330 |
| Lee Vining | 10:05:28 | -59.0 | Dark | Up | 44.5 | 72.1 | Up | 09:57:50 - 10:13:06 | 1325 |
| Reno | 10:05:38 | -58.9 | Dark | Up | 44.5 | 73.3 | Up | 09:58:00 - 10:13:16 | 1322 |
| Yerington | 10:05:34 | -58.6 | Dark | Up | 44.8 | 73.1 | Up | 09:57:56 - 10:13:12 | 1300 |
| Bishop | 10:05:24 | -58.6 | Dark | Up | 44.9 | 71.8 | Up | 09:57:46 - 10:13:02 | 1297 |
| Cedarville | 10:05:50 | -58.3 | Dark | Up | 44.8 | 75.1 | Up | 09:58:12 - 10:13:28 | 1282 |
| Hawthorne | 10:05:30 | -58.4 | Dark | Up | 45.1 | 72.8 | Up | 09:57:52 - 10:13:08 | 1281 |
| La Pine/Gilchrist | 10:06:03 | -58.2 | Dark | Up | 44.4 | 76.5 | Up | 09:58:25 - 10:13:41 | 1281 |
| Lakeview | 10:05:54 | -58.1 | Dark | Up | 44.9 | 75.7 | Up | 09:58:16 - 10:13:32 | 1272 |
| Oregon Observatory | 10:06:04 | -58.0 | Dark | Up | 44.5 | 76.7 | Up | 09:58:26 - 10:13:42 | 1271 |
| Idyllwild | 10:05:01 | -58.2 | Dark | Up | 44.9 | 68.9 | Up | 09:57:23 - 10:12:39 | 1270 |
| North Lake | 10:06:00 | -58.0 | Dark | Up | 44.7 | 76.4 | Up | 09:58:22 - 10:13:38 | 1265 |
| Paisley | 10:05:57 | -58.0 | Dark | Up | 44.9 | 76.1 | Up | 09:58:19 - 10:13:35 | 1265 |
| Sisters | 10:06:07 | -57.9 | Dark | Up | 44.5 | 77.1 | Up | 09:58:29 - 10:13:45 | 1263 |
| Bend | 10:06:05 | -57.8 | Dark | Up | 44.7 | 77.0 | Up | 09:58:27 - 10:13:43 | 1258 |
| Redmond | 10:06:06 | -57.6 | Dark | Up | 44.8 | 77.3 | Up | 09:58:28 - 10:13:44 | 1243 |
| Tonopah | 10:05:26 | -57.5 | Dark | Up | 46.0 | 72.9 | Up | 09:57:48 - 10:13:04 | 1210 |
| Beatty | 10:05:19 | -57.5 | Dark | Up | 45.9 | 71.9 | Up | 09:57:41 - 10:12:57 | 1208 |
| Maupin | 10:06:10 | -57.1 | Dark | Up | 45.1 | 78.2 | Up | 09:58:32 - 10:13:48 | 1206 |
| Calipatria | 10:04:56 | -57.4 | Dark | Up | 45.5 | 68.6 | Up | 09:57:18 - 10:12:34 | 1202 |
| Victoria | 10:06:43 | -56.4 | Dark | Up | 44.2 | 80.1 | Up | 09:59:05 - 10:14:21 | 1201 |
| The Dalles | 10:06:13 | -57.0 | Dark | Up | 45.1 | 78.6 | Up | 09:58:35 - 10:13:51 | 1195 |
| Goldendale | 10:06:13 | -56.6 | Dark | Up | 45.4 | 79.0 | Up | 09:58:35 - 10:13:51 | 1169 |
| Yuma | 10:04:52 | -56.7 | Dark | Up | 46.1 | 68.4 | Up | 09:57:14 - 10:12:30 | 1150 |
| Indian Springs | 10:05:16 | -56.8 | Dark | Up | 46.7 | 72.0 | Up | 09:57:38 - 10:12:54 | 1149 |
| Blythe | 10:04:57 | -56.5 | Dark | Up | 46.5 | 69.3 | Up | 09:57:19 - 10:12:35 | 1133 |
| Yakima | 10:06:18 | -56.0 | Dark | Up | 45.7 | 79.9 | Up | 09:58:40 - 10:13:56 | 1127 |
| Toppenish/White Swan | 10:06:16 | -56.1 | Dark | Up | 45.8 | 79.8 | Up | 09:58:38 - 10:13:54 | 1127 |
| Henderson | 10:05:12 | -56.4 | Dark | Up | 47.0 | 71.7 | Up | 09:57:34 - 10:12:50 | 1115 |
| Ellensburg | 10:06:20 | -55.8 | Dark | Up | 45.8 | 80.4 | Up | 09:58:42 - 10:13:58 | 1111 |
| Mohave Valley | 10:05:05 | -56.3 | Dark | Up | 46.9 | 70.6 | Up | 09:57:27 - 10:12:43 | 1110 |
| Laughlin/Bullhead City | 10:05:06 | -56.2 | Dark | Up | 47.0 | 70.9 | Up | 09:57:28 - 10:12:44 | 1105 |
| Parker | 10:05:00 | -56.2 | Dark | Up | 46.9 | 69.9 | Up | 09:57:22 - 10:12:38 | 1105 |
| Lake Havasu City | 10:05:02 | -56.1 | Dark | Up | 47.0 | 70.3 | Up | 09:57:24 - 10:12:40 | 1101 |
| Wenatchee | 10:06:22 | -55.5 | Dark | Up | 46.0 | 80.9 | Up | 09:58:44 - 10:14:00 | 1084 |
| Kingman/Dolan Springs | 10:05:06 | -55.8 | Dark | Up | 47.4 | 71.1 | Up | 09:57:28 - 10:12:44 | 1072 |
| Pasco | 10:06:14 | -55.4 | Dark | Up | 46.6 | 80.5 | Up | 09:58:36 - 10:13:52 | 1067 |
| PNWRO | 10:06:13 | -55.4 | Dark | Up | 46.7 | 80.3 | Up | 09:58:35 - 10:13:51 | 1064 |
| Okanogan | 10:06:43 | -54.5 | Dark | Up | 46.7 | 82.5 | Up | 09:59:05 - 10:14:21 | 1059 |
| Manson/Chelan | 10:06:24 | -55.1 | Dark | Up | 46.2 | 81.5 | Up | 09:58:46 - 10:14:02 | 1057 |
| Patrick | 10:05:06 | -55.6 | Dark | Up | 47.7 | 71.3 | Up | 09:57:28 - 10:12:44 | 1055 |
| Brewster | 10:06:24 | -54.8 | Dark | Up | 46.5 | 82.0 | Up | 09:58:46 - 10:14:02 | 1031 |
| Tonasket | 10:06:43 | -54.2 | Dark | Up | 46.8 | 82.9 | Up | 09:59:05 - 10:14:21 | 1030 |
| Anarchist Mountain Observatory | 10:06:43 | -54.0 | Dark | Up | 46.9 | 83.3 | Up | 09:59:05 - 10:14:21 | 1007 |
| Oliver | 10:06:43 | -54.0 | Dark | Up | 46.8 | 83.3 | Up | 09:59:05 - 10:14:21 | 1004 |
| Summerland | 10:06:43 | -53.8 | Dark | Up | 46.8 | 83.7 | Up | 09:59:05 - 10:14:21 | 982 |
| Penticton | 10:06:43 | -53.8 | Dark | Up | 46.9 | 83.7 | Up | 09:59:05 - 10:14:21 | 982 |
| Peachland | 10:06:43 | -53.8 | Dark | Up | 46.8 | 83.8 | Up | 09:59:05 - 10:14:21 | 978 |
| Kelowna | 10:06:43 | -53.6 | Dark | Up | 47.0 | 84.1 | Up | 09:59:05 - 10:14:21 | 959 |
| George/Scottsdale | 10:04:55 | -54.2 | Dark | Up | 48.6 | 70.1 | Up | 09:57:17 - 10:12:33 | 948 |
| Clarence Fulton | 10:06:43 | -53.3 | Dark | Up | 47.1 | 84.6 | Up | 09:59:05 - 10:14:21 | 930 |
| Dunrhomin | 10:05:26 | -47.9 | Dark | Up | 55.6 | 80.5 | Up | 09:57:48 - 10:13:04 | 386 |
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 523624, (2021/12/26 10:05UT) Object RA Dec mag sep mel Arcturus 14:15:38.1 +19:10:15 0.0 30.45 37 Phad 11:53:50.1 +53:41:41 2.4 17.30 48 6 CVn 12:25:50.8 +39:01:06 5.0 1.96 34 PPM 076426 12:21:04.1 +38:01:26 8.3 0.96 33 PPM 076472 12:25:06.5 +37:13:16 9.6 0.43 32 523624 12:22:58.5 +37:08:44 12.0 32 Positions are for J2000
Event circumstances last updated at 2021/01/27 20:14:52 UT
Marc W. Buie, Southwest Research Institute