RECON: TNO occultation with 182222

Event between (182222) 00YU1 and star GA1080:01487460 with event index number of 2353479

Geocentric closest approach at 2026/11/16 08:39:18 UTC

J2000 position of star is 05:55:11.8 +18:01:21
Equinox of date position of star is 05:56:32.8 +18:01:29
Stellar brightness G=15.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 137 degrees from the moon. Moon is 39% illuminated.
Apparent brightness V=23.6

[RECON map]
Object is 42.1 AU from the Sun and 41.3 AU from the Earth.
Apparent velocity is 20.2 km/sec on the sky relative to the star, or, 2.4 arcsec/hr.
The 1-sigma error in the time of the event is 631 seconds.
The 1-sigma cross-track error in the shadow position is 4138 km.
The sky-plane scale is 29953.0 km/arcsec.

The object has an absolute magnitude Hv=7.3
Diameter=229.1 km assuming a 5% albedo -- 10.5 sec chord
Diameter=93.5 km assuming a 30% albedo -- 4.3 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 182222, (2026/11/16 08:36UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:37.7 +07:24:35  0.4 10.62 134
Alhena         06:39:15.8 +16:22:26  1.9 10.28 147
57 Ori         05:56:32.1 +19:45:08  5.6  1.73 137
PPM 121579     05:56:28.9 +18:15:29  8.5  0.24 137
182222         05:56:46.1 +18:01:30 15.5       137
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 1.4 sigma about the mid-time.
The median site spacing is 30.3 km RECON observability=1.0 and success probability=3.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 08:40:24 -56.3 Dark Down 52.3 141.4 Up 08:25:24 - 08:55:24 10799
Sleaford 08:39:35 -50.2 Dark Down 55.1 164.3 Up 08:24:35 - 08:54:35 10745
Kelowna 08:40:22 -56.8 Dark Down 53.3 142.0 Up 08:25:22 - 08:55:22 10714
Peachland 08:40:23 -57.0 Dark Down 53.3 141.5 Up 08:25:23 - 08:55:23 10709
Summerland 08:40:24 -57.1 Dark Down 53.4 141.5 Up 08:25:24 - 08:55:24 10694
Penticton 08:40:24 -57.2 Dark Down 53.5 141.6 Up 08:25:24 - 08:55:24 10686
Victoria 08:40:38 -59.0 Dark Down 52.6 135.4 Up 08:25:38 - 08:55:38 10657
Oliver 08:40:24 -57.5 Dark Down 53.8 141.3 Up 08:25:24 - 08:55:24 10655
Anarchist Mountain Observatory 08:40:23 -57.6 Dark Down 54.0 141.5 Up 08:25:23 - 08:55:23 10637
Okanogan 08:40:25 -58.2 Dark Down 54.4 140.6 Up 08:25:25 - 08:55:25 10582
Brewster 08:40:27 -58.5 Dark Down 54.6 140.1 Up 08:25:27 - 08:55:27 10561
Manson/Chelan 08:40:29 -58.8 Dark Down 54.6 139.4 Up 08:25:29 - 08:55:29 10547
Wenatchee 08:40:31 -59.3 Dark Down 54.9 138.7 Up 08:25:31 - 08:55:31 10507
Ellensburg 08:40:32 -59.7 Dark Down 55.1 138.0 Up 08:25:32 - 08:55:32 10473
Yakima 08:40:33 -60.1 Dark Down 55.4 137.6 Up 08:25:33 - 08:55:33 10436
Toppenish/White Swan 08:40:32 -60.2 Dark Down 55.6 137.6 Up 08:25:32 - 08:55:32 10413
PNWRO 08:40:29 -60.1 Dark Down 56.6 139.5 Up 08:25:29 - 08:55:29 10355
The Dalles 08:40:38 -61.2 Dark Down 55.8 135.7 Up 08:25:38 - 08:55:38 10354
Maupin 08:40:38 -61.5 Dark Down 56.1 135.4 Up 08:25:38 - 08:55:38 10313
Sisters 08:40:42 -62.4 Dark Down 56.5 133.8 Up 08:25:42 - 08:55:42 10240
Bend 08:40:40 -62.6 Dark Down 56.8 133.9 Up 08:25:40 - 08:55:40 10213
Oregon Observatory 08:40:42 -62.8 Dark Down 56.9 133.5 Up 08:25:42 - 08:55:42 10199
Chiloquin 08:40:46 -64.1 Dark Down 57.5 131.4 Up 08:25:46 - 08:55:46 10081
Klamath Falls 08:40:46 -64.4 Dark Down 57.8 131.1 Up 08:25:46 - 08:55:46 10047
Cedarville 08:40:41 -64.4 Dark Down 59.2 132.6 Up 08:25:41 - 08:55:41 9952
Fall River/Burney 08:40:47 -65.3 Dark Down 58.8 130.2 Up 08:25:47 - 08:55:47 9927
Greenville 08:40:47 -65.9 Dark Down 59.7 129.7 Up 08:25:47 - 08:55:47 9830
Gimple 08:40:47 -65.8 Dark Down 59.7 129.9 Up 08:25:47 - 08:55:47 9829
Quincy 08:40:48 -66.0 Dark Down 59.8 129.5 Up 08:25:48 - 08:55:48 9810
Portola 08:40:46 -65.9 Dark Down 60.1 130.0 Up 08:25:46 - 08:55:46 9790
Reno 08:40:44 -65.9 Dark Down 60.7 130.6 Up 08:25:44 - 08:55:44 9752
Carson City 08:40:44 -66.2 Dark Down 60.9 130.2 Up 08:25:44 - 08:55:44 9716
Gardnerville 08:40:45 -66.4 Dark Down 61.1 129.9 Up 08:25:45 - 08:55:45 9691
Yerington 08:40:42 -66.0 Dark Down 61.4 130.9 Up 08:25:42 - 08:55:42 9685
Hawthorne 08:40:42 -66.2 Dark Down 62.1 131.1 Up 08:25:42 - 08:55:42 9630
Dunrhomin 08:39:45 -57.4 Dark Down 66.6 159.1 Up 08:24:45 - 08:54:45 9603
Nikitin 08:39:45 -57.5 Dark Down 66.7 158.9 Up 08:24:45 - 08:54:45 9584
Lee Vining 08:40:44 -66.8 Dark Down 62.1 129.5 Up 08:25:44 - 08:55:44 9583
CU-SBO 08:39:45 -57.6 Dark Down 66.8 158.6 Up 08:24:45 - 08:54:45 9579
Bishop 08:40:42 -66.9 Dark Down 62.9 129.7 Up 08:25:42 - 08:55:42 9509
Beatty 08:40:37 -66.4 Dark Down 64.2 131.7 Up 08:25:37 - 08:55:37 9434
Patrick 08:40:28 -65.7 Dark Down 66.9 134.5 Up 08:25:28 - 08:55:28 9233
Laughlin/Bullhead City 08:40:31 -66.3 Dark Down 66.7 132.7 Up 08:25:31 - 08:55:31 9220
Wildwood 08:40:48 -69.4 Dark Down 64.8 124.1 Up 08:25:48 - 08:55:48 9181
Lake Havasu City 08:40:30 -66.5 Dark Down 67.3 132.0 Up 08:25:30 - 08:55:30 9146
Idyllwild 08:40:41 -68.5 Dark Down 66.3 126.5 Up 08:25:41 - 08:55:41 9110
Calipatria 08:40:38 -68.1 Dark Down 67.4 127.4 Up 08:25:38 - 08:55:38 9025
George/Scottsdale 08:40:21 -65.3 Dark Down 69.3 135.5 Up 08:25:21 - 08:55:21 9025
Yuma 08:40:35 -67.8 Dark Down 68.3 128.1 Up 08:25:35 - 08:55:35 8964

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 182222, (2026/11/16 08:36UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 10.62 134
Alhena         06:37:42.8 +16:23:57  1.9 10.28 147
57 Ori         05:54:56.6 +19:44:58  5.6  1.73 137
PPM 121579     05:54:54.5 +18:15:19  8.5  0.24 137
182222         05:55:11.8 +18:01:21 15.5       137
Positions are for J2000

Event circumstances last updated at 2023/01/30 03:35:16 UT

Marc W. Buie, Southwest Research Institute

RECON