RECON: TNO occultation with 533396

Event between (533396) 14GQ53 and star GA0800:08600306 with event index number of 2590563

Geocentric closest approach at 2025/05/26 06:47:12 UTC

J2000 position of star is 18:11:40.2 -08:23:08
Equinox of date position of star is 18:12:51.7 -08:22:45
Stellar brightness G=16.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 136 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=22.8

[RECON map]
TNO is 21.7 AU from the Sun and 20.8 AU from the Earth.
The TNO is moving 19.7 km/sec on the sky relative to the star, or, 4.7 arcsec/hr.
The 1-sigma error in the time of the event is 155 seconds.
The 1-sigma cross-track error in the shadow position is 1195 km.
The sky-plane scale is 15078.4 km/arcsec.

The TNO has an absolute magnitude Hv=9.4
Diameter=79.8 km assuming a 5% albedo -- 4.1 sec chord
Diameter=32.6 km assuming a 30% albedo -- 1.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 533396, (2025/05/26 06:47UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:58.1 -26:29:10  0.9 30.22 164
60Bet Oph      17:44:43.7 +04:33:30  2.8 14.74 135
PPM 201392     18:07:30.4 -08:19:12  6.1  1.37 137
PPM 201496     18:13:24.7 -08:43:24  7.5  0.36 136
533396         18:13:03.3 -08:22:41 16.1       136
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 20.3 km RECON observability=0.9 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 06:49:56 -17.2 AT Down 19.3 131.5 Really Low 06:36:30 - 07:03:23 8211
Kelowna 06:49:57 -17.5 AT Down 19.5 131.2 Really Low 06:36:31 - 07:03:24 8184
Peachland 06:49:59 -17.6 AT Down 19.4 130.9 Really Low 06:36:32 - 07:03:25 8174
Summerland 06:49:58 -17.7 AT Down 19.5 131.0 Really Low 06:36:32 - 07:03:25 8165
Penticton 06:49:58 -17.8 AT Down 19.6 131.1 Really Low 06:36:31 - 07:03:24 8162
Oliver 06:50:00 -18.1 Dark Down 19.9 131.0 Really Low 06:36:33 - 07:03:26 8138
Anarchist Mountain Observatory 06:50:00 -18.4 Dark Down 20.1 131.1 Low 06:36:33 - 07:03:26 8129
Tonasket 06:50:01 -18.6 Dark Down 20.2 130.9 Low 06:36:34 - 07:03:27 8107
Okanogan 06:50:02 -18.9 Dark Down 20.4 130.7 Low 06:36:36 - 07:03:29 8083
Brewster 06:50:03 -19.2 Dark Down 20.5 130.5 Low 06:36:37 - 07:03:30 8062
Victoria 06:50:11 -18.0 Dark Down 18.3 127.4 Really Low 06:36:44 - 07:03:37 8052
Manson/Chelan 06:50:04 -19.3 Dark Down 20.4 130.1 Low 06:36:38 - 07:03:31 8044
Wenatchee 06:50:07 -19.7 Dark Down 20.6 129.8 Low 06:36:40 - 07:03:33 8009
Ellensburg 06:50:08 -20.1 Dark Down 20.8 129.5 Low 06:36:42 - 07:03:35 7978
Yakima 06:50:10 -20.4 Dark Down 21.0 129.4 Low 06:36:43 - 07:03:36 7949
Pasco 06:50:07 -21.1 Dark Down 22.0 130.5 Low 06:36:40 - 07:03:33 7941
Toppenish/White Swan 06:50:10 -20.7 Dark Down 21.3 129.4 Low 06:36:43 - 07:03:36 7936
PNWRO 06:50:06 -21.3 Dark Down 22.3 130.7 Low 06:36:40 - 07:03:33 7926
Goldendale 06:50:12 -21.1 Dark Down 21.4 128.9 Low 06:36:45 - 07:03:38 7892
The Dalles 06:50:14 -21.3 Dark Down 21.3 128.5 Low 06:36:48 - 07:03:41 7871
Maupin 06:50:15 -21.7 Dark Down 21.7 128.5 Low 06:36:49 - 07:03:42 7842
Redmond 06:50:17 -22.5 Dark Down 22.2 128.1 Low 06:36:50 - 07:03:43 7775
Sisters 06:50:19 -22.4 Dark Down 21.9 127.8 Low 06:36:52 - 07:03:45 7772
Bend 06:50:18 -22.7 Dark Down 22.2 127.9 Low 06:36:52 - 07:03:45 7758
Oregon Observatory 06:50:19 -22.8 Dark Down 22.3 127.8 Low 06:36:53 - 07:03:46 7743
La Pine/Gilchrist 06:50:20 -23.0 Dark Down 22.4 127.7 Low 06:36:53 - 07:03:46 7727
North Lake 06:50:19 -23.6 Dark Down 23.0 128.0 Low 06:36:53 - 07:03:46 7701
Paisley 06:50:20 -24.2 Dark Down 23.5 128.2 Low 06:36:53 - 07:03:46 7664
Dunrhomin 06:49:36 -28.5 Dark Down 33.3 141.7 Up 06:36:09 - 07:03:02 7650
Chiloquin 06:50:23 -24.0 Dark Down 22.8 127.0 Low 06:36:57 - 07:03:50 7639
Lakeview 06:50:20 -24.7 Dark Down 23.9 128.2 Low 06:36:54 - 07:03:47 7627
Klamath Falls 06:50:24 -24.3 Dark Down 23.1 126.9 Low 06:36:58 - 07:03:51 7613
Cedarville 06:50:22 -25.4 Dark Down 24.5 128.1 Low 06:36:56 - 07:03:49 7579
Fall River/Burney 06:50:26 -25.6 Dark Down 24.0 126.9 Low 06:37:00 - 07:03:53 7526
Susanville 06:50:26 -26.3 Dark Down 24.9 127.3 Low 06:36:59 - 07:03:52 7485
Gimple 06:50:27 -26.5 Dark Down 24.9 127.0 Low 06:37:01 - 07:03:54 7460
Greenville 06:50:28 -26.5 Dark Down 24.9 126.9 Low 06:37:01 - 07:03:54 7460
Quincy 06:50:28 -26.7 Dark Down 25.0 126.9 Low 06:37:01 - 07:03:54 7443
Portola 06:50:27 -26.9 Dark Down 25.3 127.2 Low 06:37:00 - 07:03:53 7440
Reno 06:50:26 -27.4 Dark Down 25.9 127.7 Low 06:36:59 - 07:03:52 7426
Carson City 06:50:26 -27.7 Dark Down 26.1 127.6 Low 06:37:00 - 07:03:53 7398
Yerington 06:50:25 -28.0 Dark Down 26.6 128.0 Low 06:36:58 - 07:03:51 7390
Gardnerville 06:50:27 -27.9 Dark Down 26.3 127.5 Low 06:37:00 - 07:03:53 7378
Hawthorne 06:50:24 -28.6 Dark Down 27.3 128.3 Low 06:36:58 - 07:03:51 7358
Tonopah 06:50:21 -29.3 Dark Down 28.4 129.3 Low 06:36:55 - 07:03:48 7338
Lee Vining 06:50:27 -29.0 Dark Down 27.3 127.7 Low 06:37:01 - 07:03:54 7307
Bishop 06:50:26 -29.8 Dark Down 28.1 128.0 Low 06:36:59 - 07:03:52 7266
Beatty 06:50:22 -30.6 Dark Down 29.4 129.3 Low 06:36:56 - 07:03:49 7248
Indian Springs 06:50:19 -31.1 Dark Down 30.3 130.1 Up 06:36:53 - 07:03:46 7234
Henderson 06:50:17 -31.7 Dark Down 31.1 130.4 Up 06:36:51 - 07:03:44 7198
Patrick 06:50:15 -32.5 Dark Down 32.1 131.2 Up 06:36:49 - 07:03:42 7159
Kingman/Dolan Springs 06:50:16 -32.7 Dark Down 32.2 130.9 Up 06:36:50 - 07:03:43 7138
Laughlin/Bullhead City 06:50:18 -32.6 Dark Down 31.9 130.4 Up 06:36:52 - 07:03:45 7129
Mohave Valley 06:50:19 -32.9 Dark Down 32.1 130.3 Up 06:36:52 - 07:03:45 7106
Lake Havasu City 06:50:18 -33.3 Dark Down 32.5 130.3 Up 06:36:52 - 07:03:45 7075
CPSLO 06:50:38 -31.2 Dark Down 27.9 125.3 Low 06:37:11 - 07:04:04 7063
Parker 06:50:19 -33.7 Dark Down 32.7 130.2 Up 06:36:53 - 07:03:46 7045
George/Scottsdale 06:50:11 -34.5 Dark Down 34.5 132.2 Up 06:36:44 - 07:03:37 7039
Blythe 06:50:21 -34.2 Dark Down 32.9 129.7 Up 06:36:55 - 07:03:48 6996
Wildwood 06:50:34 -32.9 Dark Down 30.0 126.4 Low 06:37:07 - 07:04:00 6985
Idyllwild 06:50:28 -33.6 Dark Down 31.4 127.9 Up 06:37:01 - 07:03:54 6979
Calipatria 06:50:25 -34.5 Dark Down 32.6 128.6 Up 06:36:58 - 07:03:51 6941
Yuma 06:50:23 -35.1 Dark Down 33.4 129.2 Up 06:36:56 - 07:03:49 6914

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 533396, (2025/05/26 06:47UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 30.22 164
60Bet Oph      17:43:28.3 +04:34:06  2.8 14.74 135
PPM 201392     18:06:07.4 -08:19:27  6.1  1.37 137
PPM 201496     18:12:01.4 -08:43:52  7.5  0.36 136
533396         18:11:40.2 -08:23:08 16.1       136
Positions are for J2000

Event circumstances last updated at 2021/11/09 00:19:22 UT

Marc W. Buie, Southwest Research Institute

RECON