RECON: TNO occultation with 535168

Event between (535168) 14XU40 and star GA1120:01610834 with event index number of 2259863

Geocentric closest approach at 2026/02/19 06:28:24 UTC

J2000 position of star is 05:56:51.3 +22:24:00
Equinox of date position of star is 05:58:11.2 +22:24:05
Stellar brightness G=14.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 97 degrees from the moon. Moon is 4% illuminated.
TNO apparent brightness V=22.5

[RECON map]
TNO is 33.5 AU from the Sun and 33.0 AU from the Earth.
The TNO is moving 9.5 km/sec on the sky relative to the star, or, 1.4 arcsec/hr.
The 1-sigma error in the time of the event is 561 seconds.
The 1-sigma cross-track error in the shadow position is 1574 km.
The sky-plane scale is 23919.4 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 24.2 sec chord
Diameter=93.5 km assuming a 30% albedo -- 9.9 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 535168, (2026/02/19 06:15UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:35.2 +07:24:35  0.4 15.00  96
Alnath         05:27:56.8 +28:37:38  1.6  9.27  90
PPM 095249     06:03:16.4 +22:23:58  6.2  1.12  98
PPM 095201     06:01:17.2 +22:28:14  7.7  0.66  98
PPM 095132     05:58:48.7 +22:21:52  9.7  0.09  97
535168         05:58:26.0 +22:24:06 14.4        97
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 1.6 sigma about the mid-time.
The median site spacing is 27.0 km RECON observability=1.0 and success probability=1.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 06:23:01 -47.7 Dark Down 41.8 251.5 Up 06:08:01 - 06:38:01 6751
Kamloops 06:24:11 -44.5 Dark Down 50.4 237.8 Up 06:09:11 - 06:39:11 6374
Kelowna 06:24:02 -45.5 Dark Down 50.4 239.7 Up 06:09:02 - 06:39:02 6312
Peachland 06:24:02 -45.4 Dark Down 50.6 239.4 Up 06:09:02 - 06:39:02 6297
Summerland 06:24:03 -45.6 Dark Down 50.6 239.7 Up 06:09:03 - 06:39:03 6285
Penticton 06:24:01 -45.7 Dark Down 50.6 239.9 Up 06:09:01 - 06:39:01 6280
Oliver 06:23:58 -46.0 Dark Down 50.8 240.3 Up 06:08:58 - 06:38:58 6247
Anarchist Mountain Observatory 06:23:56 -46.2 Dark Down 50.7 240.7 Up 06:08:56 - 06:38:56 6235
Tonasket 06:23:55 -46.4 Dark Down 50.9 240.9 Up 06:08:55 - 06:38:55 6204
Okanogan 06:23:56 -46.6 Dark Down 51.2 241.1 Up 06:08:56 - 06:38:56 6170
Brewster 06:23:54 -46.7 Dark Down 51.4 241.2 Up 06:08:54 - 06:38:54 6141
Victoria 06:24:19 -44.8 Dark Down 53.2 236.5 Up 06:09:19 - 06:39:19 6126
Manson/Chelan 06:23:56 -46.7 Dark Down 51.8 241.0 Up 06:08:56 - 06:38:56 6116
Wenatchee 06:23:55 -47.0 Dark Down 52.1 241.3 Up 06:08:55 - 06:38:55 6068
Ellensburg 06:23:53 -47.2 Dark Down 52.4 241.5 Up 06:08:53 - 06:38:53 6025
Yakima 06:23:52 -47.4 Dark Down 52.6 241.9 Up 06:08:52 - 06:38:52 5985
Toppenish/White Swan 06:23:49 -47.7 Dark Down 52.6 242.4 Up 06:08:49 - 06:38:49 5967
PNWRO 06:23:38 -48.6 Dark Down 51.9 244.4 Up 06:08:38 - 06:38:38 5957
Goldendale 06:23:51 -47.9 Dark Down 53.1 242.5 Up 06:08:51 - 06:38:51 5907
The Dalles 06:23:51 -47.9 Dark Down 53.5 242.4 Up 06:08:51 - 06:38:51 5879
Maupin 06:23:49 -48.2 Dark Down 53.6 243.0 Up 06:08:49 - 06:38:49 5840
Sisters 06:23:49 -48.6 Dark Down 54.3 243.5 Up 06:08:49 - 06:38:49 5746
Bend 06:23:46 -48.9 Dark Down 54.3 244.1 Up 06:08:46 - 06:38:46 5727
Oregon Observatory 06:23:47 -48.9 Dark Down 54.4 244.2 Up 06:08:47 - 06:38:47 5708
Dunrhomin 06:21:43 -58.8 Dark Down 44.2 262.7 Up 06:06:43 - 06:36:43 5687
North Lake 06:23:39 -49.6 Dark Down 54.4 245.6 Up 06:08:39 - 06:38:39 5654
Chiloquin 06:23:43 -49.6 Dark Down 55.3 245.4 Up 06:08:43 - 06:38:43 5570
Lakeview 06:23:30 -50.6 Dark Down 54.4 247.5 Up 06:08:30 - 06:38:30 5558
Klamath Falls 06:23:40 -49.9 Dark Down 55.4 245.9 Up 06:08:40 - 06:38:40 5537
Cedarville 06:23:28 -51.2 Dark Down 54.6 248.5 Up 06:08:28 - 06:38:28 5495
Fall River/Burney 06:23:33 -50.8 Dark Down 55.6 247.9 Up 06:08:33 - 06:38:33 5425
Susanville 06:23:25 -51.7 Dark Down 55.3 249.5 Up 06:08:25 - 06:38:25 5375
Gimple 06:23:26 -51.7 Dark Down 55.6 249.6 Up 06:08:26 - 06:38:26 5343
Greenville 06:23:26 -51.7 Dark Down 55.6 249.5 Up 06:08:26 - 06:38:26 5342
Quincy 06:23:25 -51.8 Dark Down 55.7 249.8 Up 06:08:25 - 06:38:25 5321
Portola 06:23:21 -52.2 Dark Down 55.4 250.5 Up 06:08:21 - 06:38:21 5317
Reno 06:23:15 -52.7 Dark Down 55.0 251.5 Up 06:08:15 - 06:38:15 5302
Carson City 06:23:14 -52.9 Dark Down 55.1 252.0 Up 06:08:14 - 06:38:14 5266
Yerington 06:23:09 -53.4 Dark Down 54.7 252.8 Up 06:08:09 - 06:38:09 5258
Gardnerville 06:23:13 -53.1 Dark Down 55.2 252.3 Up 06:08:13 - 06:38:13 5242
Hawthorne 06:23:02 -54.0 Dark Down 54.5 253.9 Up 06:08:02 - 06:38:02 5221
Tonopah 06:22:50 -55.1 Dark Down 53.6 255.8 Up 06:07:50 - 06:37:50 5201
Lee Vining 06:23:04 -54.1 Dark Down 55.0 254.2 Up 06:08:04 - 06:38:04 5154
Bishop 06:22:56 -54.9 Dark Down 54.6 255.7 Up 06:07:56 - 06:37:56 5107
Beatty 06:22:42 -56.2 Dark Down 53.5 257.7 Up 06:07:42 - 06:37:42 5092
Indian Springs 06:22:33 -57.0 Dark Down 52.8 258.9 Up 06:07:33 - 06:37:33 5081
Henderson 06:22:26 -57.8 Dark Down 52.3 260.1 Up 06:07:26 - 06:37:26 5041
Patrick 06:22:15 -58.8 Dark Down 51.6 261.7 Up 06:07:15 - 06:37:15 5002
Kingman/Dolan Springs 06:22:16 -58.9 Dark Down 51.8 261.9 Up 06:07:16 - 06:37:16 4974
Laughlin/Bullhead City 06:22:18 -58.6 Dark Down 52.2 261.5 Up 06:07:18 - 06:37:18 4961
Mohave Valley 06:22:18 -58.8 Dark Down 52.2 261.9 Up 06:07:18 - 06:37:18 4933
Lake Havasu City 06:22:15 -59.2 Dark Down 52.1 262.6 Up 06:07:15 - 06:37:15 4897
George/Scottsdale 06:21:53 -61.1 Dark Down 50.2 265.1 Up 06:06:53 - 06:36:53 4873
Parker 06:22:13 -59.5 Dark Down 52.1 263.0 Up 06:07:13 - 06:37:13 4861
Idyllwild 06:22:29 -58.3 Dark Down 54.1 261.9 Up 06:07:29 - 06:37:29 4766
Wildwood 06:22:45 -56.8 Dark Down 55.5 260.1 Up 06:07:45 - 06:37:45 4764
Calipatria 06:22:18 -59.4 Dark Down 53.2 263.5 Up 06:07:18 - 06:37:18 4728
Yuma 06:22:10 -60.2 Dark Down 52.5 264.7 Up 06:07:10 - 06:37:10 4703

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 535168, (2026/02/19 06:15UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 15.00  96
Alnath         05:26:17.6 +28:36:23  1.6  9.27  90
PPM 095249     06:01:41.6 +22:24:04  6.2  1.12  98
PPM 095201     05:59:42.4 +22:28:15  7.7  0.66  98
PPM 095132     05:57:13.9 +22:21:47  9.7  0.09  97
535168         05:56:51.3 +22:24:00 14.4        97
Positions are for J2000

Event circumstances last updated at 2022/01/10 23:39:08 UT

Marc W. Buie, Southwest Research Institute

RECON