RECON: TNO occultation with 10VE253

Event between 10VE253 and star GA1160:02906128 with event index number of 2106388

Geocentric closest approach at 2026/01/16 11:26:48 UTC

J2000 position of star is 07:43:15.0 +27:39:58
Equinox of date position of star is 07:44:37.5 +27:36:42
Stellar brightness G=15.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 157 degrees from the moon. Moon is 5% illuminated.
TNO apparent brightness V=23.4

[RECON map]
TNO is 22.0 AU from the Sun and 21.1 AU from the Earth.
The TNO is moving 23.6 km/sec on the sky relative to the star, or, 5.6 arcsec/hr.
The 1-sigma error in the time of the event is 257 seconds.
The 1-sigma cross-track error in the shadow position is 2121 km.
The sky-plane scale is 15272.1 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=61.1 km assuming a 5% albedo -- 2.6 sec chord
Diameter=24.9 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 10VE253, (2026/01/16 11:27UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:54.6 +27:57:40  1.1  0.58 157
75Sig Gem      07:44:56.1 +28:49:07  5.3  1.22 157
PPM 097936     07:47:28.8 +26:39:37  7.9  1.11 156
PPM 097913     07:46:11.1 +27:25:00  9.3  0.35 157
PPM 097859     07:44:00.9 +27:19:32 10.2  0.33 157
10VE253        07:44:51.4 +27:36:09 15.1       157
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 3.5 sigma about the mid-time.
The median site spacing is 18.1 km RECON observability=1.0 and success probability=23.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 11:24:40 -32.9 Dark Down 36.4 269.6 Up 11:09:40 - 11:39:40 1910
Kamloops 11:24:55 -42.0 Dark Down 45.5 258.7 Up 11:09:55 - 11:39:55 1345
Kelowna 11:24:51 -41.7 Dark Down 45.0 260.3 Up 11:09:51 - 11:39:51 1310
Peachland 11:24:52 -41.9 Dark Down 45.3 260.2 Up 11:09:52 - 11:39:52 1292
Summerland 11:24:51 -41.9 Dark Down 45.2 260.4 Up 11:09:51 - 11:39:51 1283
Penticton 11:24:50 -41.9 Dark Down 45.2 260.5 Up 11:09:50 - 11:39:50 1282
Oliver 11:24:49 -42.0 Dark Down 45.2 260.9 Up 11:09:49 - 11:39:49 1254
Anarchist Mountain Observatory 11:24:48 -41.9 Dark Down 45.1 261.2 Up 11:09:48 - 11:39:48 1247
Tonasket 11:24:47 -42.0 Dark Down 45.2 261.5 Up 11:09:47 - 11:39:47 1220
Okanogan 11:24:47 -42.2 Dark Down 45.4 261.7 Up 11:09:47 - 11:39:47 1188
Brewster 11:24:46 -42.4 Dark Down 45.5 261.8 Up 11:09:46 - 11:39:46 1160
Manson/Chelan 11:24:46 -42.7 Dark Down 45.8 261.7 Up 11:09:46 - 11:39:46 1131
Wenatchee 11:24:45 -43.0 Dark Down 46.0 262.0 Up 11:09:45 - 11:39:45 1087
Victoria 11:24:54 -44.6 Dark Down 47.8 258.2 Up 11:09:54 - 11:39:54 1077
Dunrhomin 11:23:58 -33.3 Dark Down 35.2 278.5 Up 11:08:58 - 11:38:58 1077
CU-SBO 11:23:57 -33.4 Dark Down 35.2 278.6 Up 11:08:57 - 11:38:57 1053
Ellensburg 11:24:44 -43.3 Dark Down 46.2 262.3 Up 11:09:44 - 11:39:44 1046
PNWRO 11:24:38 -42.5 Dark Down 45.2 264.6 Up 11:09:38 - 11:39:38 1021
Yakima 11:24:43 -43.4 Dark Down 46.3 262.7 Up 11:09:43 - 11:39:43 1012
Toppenish/White Swan 11:24:42 -43.4 Dark Down 46.2 263.0 Up 11:09:42 - 11:39:42 1000
Goldendale 11:24:41 -43.8 Dark Down 46.6 263.2 Up 11:09:41 - 11:39:41 940
The Dalles 11:24:41 -44.1 Dark Down 46.8 263.2 Up 11:09:41 - 11:39:41 908
Maupin 11:24:39 -44.1 Dark Down 46.8 263.7 Up 11:09:39 - 11:39:39 877
Sisters 11:24:38 -44.7 Dark Down 47.3 264.3 Up 11:09:38 - 11:39:38 786
Bend 11:24:36 -44.6 Dark Down 47.1 264.7 Up 11:09:36 - 11:39:36 775
Oregon Observatory 11:24:36 -44.8 Dark Down 47.2 264.8 Up 11:09:36 - 11:39:36 756
North Lake 11:24:33 -44.5 Dark Down 46.9 265.9 Up 11:09:33 - 11:39:33 720
Lakeview 11:24:29 -44.4 Dark Down 46.5 267.4 Up 11:09:29 - 11:39:29 649
Chiloquin 11:24:33 -45.4 Dark Down 47.6 265.9 Up 11:09:33 - 11:39:33 628
Klamath Falls 11:24:32 -45.4 Dark Down 47.6 266.3 Up 11:09:32 - 11:39:32 601
Cedarville 11:24:26 -44.4 Dark Down 46.4 268.2 Up 11:09:26 - 11:39:26 599
Fall River/Burney 11:24:28 -45.4 Dark Down 47.4 267.9 Up 11:09:28 - 11:39:28 512
Susanville 11:24:24 -45.0 Dark Down 46.8 269.0 Up 11:09:24 - 11:39:24 484
Gimple 11:24:24 -45.2 Dark Down 47.0 269.2 Up 11:09:24 - 11:39:24 452
Greenville 11:24:24 -45.3 Dark Down 47.1 269.1 Up 11:09:24 - 11:39:24 449
Reno 11:24:20 -44.5 Dark Down 46.2 270.5 Up 11:09:20 - 11:39:20 439
Portola 11:24:22 -45.0 Dark Down 46.7 269.8 Up 11:09:22 - 11:39:22 438
Quincy 11:24:24 -45.3 Dark Down 47.1 269.4 Up 11:09:24 - 11:39:24 431
Yerington 11:24:17 -44.1 Dark Down 45.7 271.5 Up 11:09:17 - 11:39:17 416
Tonopah 11:24:10 -42.7 Dark Down 44.2 273.5 Up 11:09:10 - 11:39:10 410
Carson City 11:24:19 -44.6 Dark Down 46.2 270.9 Up 11:09:19 - 11:39:19 408
Hawthorne 11:24:15 -43.8 Dark Down 45.3 272.3 Up 11:09:15 - 11:39:15 395
Gardnerville 11:24:18 -44.6 Dark Down 46.2 271.2 Up 11:09:18 - 11:39:18 389
Indian Springs 11:24:03 -41.7 Dark Down 42.9 275.8 Up 11:09:03 - 11:39:03 340
Lee Vining 11:24:14 -44.2 Dark Down 45.7 272.5 Up 11:09:14 - 11:39:14 326
Beatty 11:24:06 -42.5 Dark Down 43.7 274.9 Up 11:09:06 - 11:39:06 326
Henderson 11:24:01 -41.2 Dark Down 42.3 276.6 Up 11:09:01 - 11:39:01 321
Patrick 11:23:57 -40.3 Dark Down 41.3 277.7 Up 11:08:57 - 11:38:57 313
Bishop 11:24:11 -43.7 Dark Down 45.1 273.5 Up 11:09:11 - 11:39:11 301
Kingman/Dolan Springs 11:23:56 -40.5 Dark Down 41.4 277.8 Up 11:08:56 - 11:38:56 285
Laughlin/Bullhead City 11:23:57 -40.9 Dark Down 41.8 277.6 Up 11:08:57 - 11:38:57 261
George/Scottsdale 11:23:48 -38.7 Dark Down 39.4 280.0 Up 11:08:48 - 11:38:48 248
Mohave Valley 11:23:57 -40.9 Dark Down 41.8 277.8 Up 11:08:57 - 11:38:57 237
Lake Havasu City 11:23:55 -40.7 Dark Down 41.5 278.3 Up 11:08:55 - 11:38:55 212
Parker 11:23:54 -40.7 Dark Down 41.5 278.6 Up 11:08:54 - 11:38:54 182
Idyllwild 11:23:58 -42.7 Dark Down 43.4 277.9 Up 11:08:58 - 11:38:58 44
Calipatria 11:23:54 -41.7 Dark Down 42.3 279.0 Up 11:08:54 - 11:38:54 38
Yuma 11:23:51 -41.0 Dark Down 41.5 279.7 Up 11:08:51 - 11:38:51 37
Wildwood 11:24:03 -44.2 Dark Down 45.0 276.7 Up 11:09:03 - 11:39:03 -2

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 10VE253, (2026/01/16 11:27UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1  0.58 157
75Sig Gem      07:43:18.8 +28:52:56  5.3  1.22 157
PPM 097936     07:45:53.1 +26:43:31  7.9  1.11 156
PPM 097913     07:44:34.8 +27:28:52  9.3  0.35 157
PPM 097859     07:42:24.6 +27:23:20 10.2  0.33 157
10VE253        07:43:15.0 +27:39:58 15.1       157
Positions are for J2000

Event circumstances last updated at 2022/04/12 23:08:55 UT

Marc W. Buie, Southwest Research Institute

RECON