RECON: TNO occultation with 533396

Event between (533396) 14GQ53 and star GA0800:09060417 with event index number of 2590931

Geocentric closest approach at 2026/07/26 05:42:48 UTC

J2000 position of star is 18:17:40.5 -09:43:47
Equinox of date position of star is 18:18:53.3 -09:43:12
Stellar brightness G=16.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 20 degrees from the moon. Moon is 90% illuminated.
TNO apparent brightness V=22.9

[RECON map]
TNO is 22.1 AU from the Sun and 21.3 AU from the Earth.
The TNO is moving 20.3 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 166 seconds.
The 1-sigma cross-track error in the shadow position is 1579 km.
The sky-plane scale is 15419.0 km/arcsec.

The TNO has an absolute magnitude Hv=9.4
Diameter=79.8 km assuming a 5% albedo -- 3.9 sec chord
Diameter=32.6 km assuming a 30% albedo -- 1.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 533396, (2026/07/26 05:43UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:02.4 -26:29:19  0.9 30.55  16
60Bet Oph      17:44:47.2 +04:33:29  2.8 16.64  33
Zet Sct        18:25:06.9 -08:55:07  4.2  1.68  22
PPM 201560     18:17:43.2 -09:47:55  8.0  0.36  20
PPM 201584     18:19:24.5 -09:50:06  9.1  0.13  20
533396         18:19:08.3 -09:43:05 16.3        20
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 22.4 km RECON observability=0.8 and success probability=3.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 05:41:48 -12.9 AT Up 29.4 173.9 Low 05:27:28 - 05:56:08 4889
Victoria 05:42:01 -13.4 AT Up 31.3 170.3 Up 05:27:41 - 05:56:21 4839
Peachland 05:41:47 -13.9 AT Up 30.4 174.5 Up 05:27:27 - 05:56:07 4830
Kelowna 05:41:45 -13.9 AT Up 30.3 174.9 Up 05:27:25 - 05:56:05 4830
Summerland 05:41:47 -14.0 AT Up 30.5 174.6 Up 05:27:27 - 05:56:07 4821
Penticton 05:41:47 -14.1 AT Up 30.6 174.7 Up 05:27:27 - 05:56:07 4815
Oliver 05:41:47 -14.4 AT Up 31.0 174.7 Up 05:27:27 - 05:56:07 4796
Anarchist Mountain Observatory 05:41:47 -14.6 AT Up 31.1 174.9 Up 05:27:27 - 05:56:07 4784
Tonasket 05:41:47 -14.8 AT Up 31.4 174.8 Up 05:27:27 - 05:56:07 4768
Okanogan 05:41:48 -15.1 AT Up 31.8 174.6 Up 05:27:28 - 05:56:08 4753
Brewster 05:41:49 -15.2 AT Up 32.0 174.4 Up 05:27:29 - 05:56:09 4743
Manson/Chelan 05:41:51 -15.2 AT Up 32.2 174.0 Up 05:27:31 - 05:56:11 4739
Wenatchee 05:41:52 -15.6 AT Up 32.7 173.7 Up 05:27:32 - 05:56:12 4716
Ellensburg 05:41:53 -15.8 AT Up 33.1 173.5 Up 05:27:33 - 05:56:13 4698
Yakima 05:41:54 -16.1 AT Up 33.5 173.4 Up 05:27:34 - 05:56:14 4675
Sleaford 05:41:01 -15.9 AT Up 27.7 189.9 Low 05:26:41 - 05:55:21 4664
Toppenish/White Swan 05:41:53 -16.4 AT Up 33.7 173.6 Up 05:27:33 - 05:56:13 4660
Goldendale 05:41:56 -16.7 AT Up 34.2 173.1 Up 05:27:36 - 05:56:16 4637
The Dalles 05:41:58 -16.7 AT Up 34.4 172.6 Up 05:27:38 - 05:56:18 4632
PNWRO 05:41:49 -17.3 AT Up 34.2 175.3 Up 05:27:29 - 05:56:09 4606
Maupin 05:41:58 -17.1 AT Up 34.8 172.7 Up 05:27:38 - 05:56:18 4605
Sisters 05:42:01 -17.6 AT Up 35.6 172.0 Up 05:27:41 - 05:56:21 4564
Bend 05:42:00 -17.9 AT Up 35.9 172.3 Up 05:27:40 - 05:56:20 4544
Oregon Observatory 05:42:00 -17.9 AT Up 36.1 172.2 Up 05:27:40 - 05:56:20 4537
North Lake 05:42:00 -18.7 Dark Up 36.8 172.8 Up 05:27:40 - 05:56:20 4486
Chiloquin 05:42:04 -18.8 Dark Up 37.3 171.5 Up 05:27:44 - 05:56:24 4465
Klamath Falls 05:42:04 -19.1 Dark Up 37.7 171.6 Up 05:27:44 - 05:56:24 4442
Lakeview 05:41:59 -19.8 Dark Up 37.9 173.3 Up 05:27:39 - 05:56:19 4407
Cedarville 05:41:59 -20.4 Dark Up 38.5 173.5 Up 05:27:39 - 05:56:19 4361
Fall River/Burney 05:42:04 -20.2 Dark Up 38.9 171.9 Up 05:27:44 - 05:56:24 4358
Susanville 05:42:02 -21.1 Dark Up 39.6 172.8 Up 05:27:42 - 05:56:22 4300
Greenville 05:42:04 -21.2 Dark Up 39.8 172.4 Up 05:27:44 - 05:56:24 4288
Gimple 05:42:03 -21.2 Dark Up 39.8 172.5 Up 05:27:43 - 05:56:23 4286
Quincy 05:42:04 -21.3 Dark Up 40.0 172.4 Up 05:27:44 - 05:56:24 4275
Portola 05:42:03 -21.6 Dark Up 40.2 173.0 Up 05:27:43 - 05:56:23 4255
Reno 05:42:00 -22.1 Dark Up 40.5 173.8 Up 05:27:40 - 05:56:20 4222
Carson City 05:42:00 -22.4 Dark Up 40.9 173.8 Up 05:27:40 - 05:56:20 4197
Gardnerville 05:42:00 -22.7 Dark Up 41.1 173.8 Up 05:27:40 - 05:56:20 4179
Yerington 05:41:58 -22.9 Dark Up 41.1 174.6 Up 05:27:38 - 05:56:18 4169
Hawthorne 05:41:56 -23.5 Dark Up 41.6 175.2 Up 05:27:36 - 05:56:16 4124
Lee Vining 05:42:00 -23.7 Dark Up 42.2 174.5 Up 05:27:40 - 05:56:20 4097
Tonopah 05:41:51 -24.5 Dark Up 42.2 177.0 Up 05:27:31 - 05:56:11 4056
Bishop 05:41:57 -24.6 Dark Up 42.8 175.4 Up 05:27:37 - 05:56:17 4036
Beatty 05:41:52 -25.7 Dark Up 43.3 177.6 Up 05:27:32 - 05:56:12 3962
Indian Springs 05:41:47 -26.4 Dark Up 43.7 179.0 Up 05:27:27 - 05:56:07 3910
Dunrhomin 05:41:02 -27.0 Dark Up 39.2 192.3 Up 05:26:42 - 05:55:22 3898
Henderson 05:41:45 -27.2 Dark Up 44.2 180.0 Up 05:27:25 - 05:56:05 3852
Wildwood 05:42:03 -27.1 Dark Up 46.0 174.9 Up 05:27:43 - 05:56:23 3802
Laughlin/Bullhead City 05:41:45 -28.1 Dark Up 45.1 180.5 Up 05:27:25 - 05:56:05 3776
Patrick 05:41:41 -28.2 Dark Up 44.8 181.5 Up 05:27:21 - 05:56:01 3776
Kingman/Dolan Springs 05:41:42 -28.3 Dark Up 45.1 181.2 Up 05:27:22 - 05:56:02 3764
Mohave Valley 05:41:44 -28.3 Dark Up 45.4 180.5 Up 05:27:24 - 05:56:04 3755
Idyllwild 05:41:55 -28.3 Dark Up 46.5 177.5 Up 05:27:35 - 05:56:15 3725
Lake Havasu City 05:41:44 -28.8 Dark Up 45.8 180.9 Up 05:27:24 - 05:56:04 3718
Parker 05:41:45 -29.1 Dark Up 46.1 180.9 Up 05:27:25 - 05:56:05 3691
Calipatria 05:41:50 -29.4 Dark Up 47.1 179.2 Up 05:27:30 - 05:56:10 3646
George/Scottsdale 05:41:34 -30.5 Dark Up 46.5 184.4 Up 05:27:14 - 05:55:54 3591
Yuma 05:41:47 -30.1 Dark Up 47.6 180.5 Up 05:27:27 - 05:56:07 3588

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, (2026/07/26 05:43UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 30.55  16
60Bet Oph      17:43:28.3 +04:34:06  2.8 16.64  33
Zet Sct        18:23:39.7 -08:56:03  4.2  1.68  22
PPM 201560     18:16:15.4 -09:48:35  8.0  0.36  20
PPM 201584     18:17:56.7 -09:50:50  9.1  0.13  20
533396         18:17:40.5 -09:43:47 16.3        20
Positions are for J2000

Event circumstances last updated at 2022/01/15 23:49:19 UT

Marc W. Buie, Southwest Research Institute

RECON