RECON: TNO occultation with 533561

Event between (533561) 14JN80 and star GA0800:07522114 with event index number of 2586471

Geocentric closest approach at 2026/06/19 07:23:34 UTC

J2000 position of star is 17:56:38.9 -09:22:31
Equinox of date position of star is 17:57:59.6 -09:22:37
Stellar brightness G=15.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 122 degrees from the moon. Moon is 23% illuminated.
Apparent brightness V=22.3

[RECON map]
Object is 37.4 AU from the Sun and 36.4 AU from the Earth.
Apparent velocity is 24.3 km/sec on the sky relative to the star, or, 3.3 arcsec/hr.
The 1-sigma error in the time of the event is 479 seconds.
The 1-sigma cross-track error in the shadow position is 3221 km.
The sky-plane scale is 26419.7 km/arcsec.

The object has an absolute magnitude Hv=6.6
Diameter=288.4 km assuming a 5% albedo -- 11.7 sec chord
Diameter=117.7 km assuming a 30% albedo -- 4.8 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 533561, (2026/06/19 07:24UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:02.1 -26:29:18  0.9 26.78 104
35Eta Oph      17:11:53.9 -15:45:21  2.6 12.95 112
64Nu Oph       18:00:29.1 -09:46:28  3.3  0.71 123
PPM 233708     17:54:39.4 -10:22:34  8.1  1.31 121
PPM 201219     17:57:55.5 -09:36:49  9.6  0.24 122
533561         17:58:06.1 -09:22:37 15.4       122
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 1.9 sigma about the mid-time.
The median site spacing is 23.4 km RECON observability=1.0 and success probability=0.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 07:23:20 -14.4 AT Down 28.5 183.7 Low 07:08:20 - 07:38:20 10616
Kamloops 07:24:01 -15.4 AT Down 29.2 167.6 Low 07:09:01 - 07:39:01 10557
Kelowna 07:23:58 -16.3 AT Down 30.1 168.5 Up 07:08:58 - 07:38:58 10511
Peachland 07:23:59 -16.4 AT Down 30.2 168.1 Up 07:08:59 - 07:38:59 10505
Summerland 07:23:59 -16.5 AT Down 30.3 168.2 Up 07:08:59 - 07:38:59 10497
Penticton 07:23:59 -16.6 AT Down 30.4 168.3 Up 07:08:59 - 07:38:59 10493
Oliver 07:23:59 -17.0 AT Down 30.8 168.3 Up 07:08:59 - 07:38:59 10472
Anarchist Mountain Observatory 07:23:59 -17.2 AT Down 31.0 168.5 Up 07:08:59 - 07:38:59 10463
Victoria 07:24:11 -17.2 AT Down 30.8 163.9 Up 07:09:11 - 07:39:11 10432
Okanogan 07:23:59 -17.8 AT Down 31.6 168.2 Up 07:08:59 - 07:38:59 10425
Brewster 07:24:00 -18.0 Dark Down 31.8 167.9 Up 07:09:00 - 07:39:00 10409
Manson/Chelan 07:24:02 -18.2 Dark Down 31.9 167.4 Up 07:09:02 - 07:39:02 10396
Wenatchee 07:24:03 -18.6 Dark Down 32.4 167.2 Up 07:09:03 - 07:39:03 10367
Ellensburg 07:24:03 -19.0 Dark Down 32.8 166.9 Up 07:09:03 - 07:39:03 10342
Yakima 07:24:03 -19.4 Dark Down 33.2 166.8 Up 07:09:03 - 07:39:03 10317
Toppenish/White Swan 07:24:03 -19.6 Dark Down 33.4 167.0 Up 07:09:03 - 07:39:03 10304
PNWRO 07:23:59 -20.2 Dark Down 34.0 168.7 Up 07:08:59 - 07:38:59 10281
The Dalles 07:24:07 -20.3 Dark Down 34.0 165.9 Up 07:09:07 - 07:39:07 10254
Maupin 07:24:07 -20.7 Dark Down 34.4 166.0 Up 07:09:07 - 07:39:07 10228
Sisters 07:24:08 -21.6 Dark Down 35.2 165.3 Up 07:09:08 - 07:39:08 10171
Bend 07:24:08 -21.8 Dark Down 35.5 165.5 Up 07:09:08 - 07:39:08 10155
Oregon Observatory 07:24:08 -22.0 Dark Down 35.6 165.3 Up 07:09:08 - 07:39:08 10144
Chiloquin 07:24:11 -23.2 Dark Down 36.8 164.6 Up 07:09:11 - 07:39:11 10055
Klamath Falls 07:24:11 -23.6 Dark Down 37.2 164.6 Up 07:09:11 - 07:39:11 10032
Cedarville 07:24:06 -24.5 Dark Down 38.1 166.4 Up 07:09:06 - 07:39:06 9984
Fall River/Burney 07:24:10 -24.8 Dark Down 38.4 164.9 Up 07:09:10 - 07:39:10 9950
Greenville 07:24:10 -25.7 Dark Down 39.3 165.2 Up 07:09:10 - 07:39:10 9885
Gimple 07:24:10 -25.7 Dark Down 39.4 165.3 Up 07:09:10 - 07:39:10 9885
Quincy 07:24:10 -25.9 Dark Down 39.5 165.2 Up 07:09:10 - 07:39:10 9871
Dunrhomin 07:23:16 -26.1 Dark Down 40.2 185.2 Up 07:08:16 - 07:38:16 9871
Portola 07:24:09 -26.1 Dark Down 39.8 165.8 Up 07:09:09 - 07:39:09 9862
Nikitin 07:23:15 -26.3 Dark Down 40.4 185.2 Up 07:08:15 - 07:38:15 9857
CU-SBO 07:23:16 -26.4 Dark Down 40.5 185.1 Up 07:08:16 - 07:38:16 9853
Reno 07:24:06 -26.5 Dark Down 40.1 166.5 Up 07:09:06 - 07:39:06 9843
Carson City 07:24:06 -26.8 Dark Down 40.5 166.5 Up 07:09:06 - 07:39:06 9817
Yerington 07:24:04 -27.1 Dark Down 40.8 167.2 Up 07:09:04 - 07:39:04 9802
Gardnerville 07:24:06 -27.1 Dark Down 40.7 166.5 Up 07:09:06 - 07:39:06 9799
Hawthorne 07:24:03 -27.6 Dark Down 41.3 167.8 Up 07:09:03 - 07:39:03 9768
Lee Vining 07:24:05 -28.1 Dark Down 41.8 167.1 Up 07:09:05 - 07:39:05 9726
Bishop 07:24:03 -28.8 Dark Down 42.5 167.9 Up 07:09:03 - 07:39:03 9681
Beatty 07:23:57 -29.4 Dark Down 43.2 170.0 Up 07:08:57 - 07:38:57 9644
Patrick 07:23:47 -31.1 Dark Down 45.0 173.7 Up 07:08:47 - 07:38:47 9526
Laughlin/Bullhead City 07:23:50 -31.3 Dark Down 45.2 172.7 Up 07:08:50 - 07:38:50 9507
Lake Havasu City 07:23:49 -32.0 Dark Down 45.9 172.9 Up 07:08:49 - 07:38:49 9454
Wildwood 07:24:05 -32.0 Dark Down 45.7 167.0 Up 07:09:05 - 07:39:05 9425
Idyllwild 07:23:58 -32.6 Dark Down 46.3 169.5 Up 07:08:58 - 07:38:58 9396
George/Scottsdale 07:23:41 -32.8 Dark Down 46.8 176.3 Up 07:08:41 - 07:38:41 9387
Calipatria 07:23:54 -33.3 Dark Down 47.1 171.0 Up 07:08:54 - 07:38:54 9344
Yuma 07:23:51 -33.8 Dark Down 47.6 172.2 Up 07:08:51 - 07:38:51 9308

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 533561, (2026/06/19 07:24UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 26.78 104
35Eta Oph      17:10:22.7 -15:43:29  2.6 12.95 112
64Nu Oph       17:59:01.6 -09:46:28  3.3  0.71 123
PPM 233708     17:53:11.5 -10:22:20  8.1  1.31 121
PPM 201219     17:56:28.1 -09:36:42  9.6  0.24 122
533561         17:56:38.9 -09:22:31 15.4       122
Positions are for J2000

Event circumstances last updated at 2024/06/19 21:28:24 UT

Marc W. Buie, Southwest Research Institute

RECON