RECON: TNO occultation with 533396

Event between (533396) 14GQ53 and star GA0800:08088112 with event index number of 2590590

Geocentric closest approach at 2025/07/12 05:07:22 UTC

J2000 position of star is 18:04:57.6 -08:30:54
Equinox of date position of star is 18:06:09.2 -08:30:43
Stellar brightness G=15.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 39 degrees from the moon. Moon is 98% 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 21.9 km/sec on the sky relative to the star, or, 5.2 arcsec/hr.
The 1-sigma error in the time of the event is 126 seconds.
The 1-sigma cross-track error in the shadow position is 1185 km.
The sky-plane scale is 15068.7 km/arcsec.

The TNO has an absolute magnitude Hv=9.4
Diameter=79.8 km assuming a 5% albedo -- 3.6 sec chord
Diameter=32.6 km assuming a 30% albedo -- 1.5 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 533396, (2025/07/12 05:07UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:58.6 -26:29:11  0.9 28.88  56
60Bet Oph      17:44:44.1 +04:33:30  2.8 14.14  50
PPM 201392     18:07:30.9 -08:19:12  6.1  0.35  39
PPM 201369     18:06:22.3 -08:44:08  9.6  0.22  39
533396         18:06:21.2 -08:30:41 15.9        39
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 23.8 km RECON observability=0.4 and success probability=7.2%
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 05:07:43 -8.1 NT Down 27.8 153.8 Low 04:56:43 - 05:18:43 2868
Kelowna 05:07:44 -8.3 NT Down 28.2 153.5 Low 04:56:44 - 05:18:44 2850
Peachland 05:07:45 -8.3 NT Down 28.2 153.2 Low 04:56:45 - 05:18:45 2847
Summerland 05:07:45 -8.5 NT Down 28.3 153.2 Low 04:56:45 - 05:18:45 2838
Penticton 05:07:45 -8.5 NT Down 28.4 153.4 Low 04:56:45 - 05:18:45 2834
Victoria 05:07:58 -7.6 NT Down 28.1 149.0 Low 04:56:58 - 05:18:58 2817
Oliver 05:07:46 -8.8 NT Up 28.7 153.3 Low 04:56:46 - 05:18:46 2815
Anarchist Mountain Observatory 05:07:45 -9.0 NT Up 28.9 153.4 Low 04:56:45 - 05:18:45 2805
Tonasket 05:07:46 -9.2 NT Up 29.2 153.3 Low 04:56:46 - 05:18:46 2789
Okanogan 05:07:47 -9.4 NT Up 29.5 153.0 Low 04:56:47 - 05:18:47 2773
Brewster 05:07:48 -9.5 NT Up 29.6 152.8 Low 04:56:48 - 05:18:48 2760
Manson/Chelan 05:07:50 -9.5 NT Up 29.7 152.3 Low 04:56:50 - 05:18:50 2753
Wenatchee 05:07:52 -9.8 NT Up 30.1 152.0 Up 04:56:52 - 05:18:52 2729
Ellensburg 05:07:53 -10.0 NT Up 30.4 151.7 Up 04:56:53 - 05:18:53 2708
Yakima 05:07:54 -10.3 NT Up 30.7 151.5 Up 04:56:54 - 05:18:54 2685
Toppenish/White Swan 05:07:54 -10.6 NT Up 31.0 151.7 Up 04:56:54 - 05:18:54 2671
Pasco 05:07:50 -11.2 NT Up 31.5 153.0 Up 04:56:50 - 05:18:50 2651
Goldendale 05:07:57 -10.8 NT Up 31.3 151.0 Up 04:56:57 - 05:18:57 2645
PNWRO 05:07:50 -11.5 NT Up 31.8 153.2 Up 04:56:50 - 05:18:50 2635
The Dalles 05:07:58 -10.8 NT Up 31.4 150.6 Up 04:56:58 - 05:18:58 2635
Maupin 05:07:59 -11.2 NT Up 31.8 150.6 Up 04:56:59 - 05:18:59 2610
Sisters 05:08:02 -11.6 NT Up 32.4 149.8 Up 04:57:02 - 05:19:02 2563
Redmond 05:08:01 -11.8 NT Up 32.6 150.2 Up 04:57:01 - 05:19:01 2558
Bend 05:08:02 -11.9 NT Up 32.7 150.0 Up 04:57:02 - 05:19:02 2547
Oregon Observatory 05:08:02 -11.9 NT Up 32.8 149.8 Up 04:57:02 - 05:19:02 2538
La Pine/Gilchrist 05:08:03 -12.1 AT Up 33.0 149.7 Up 04:57:03 - 05:19:03 2526
North Lake 05:08:02 -12.7 AT Up 33.5 150.2 Up 04:57:02 - 05:19:02 2493
Chiloquin 05:08:07 -12.7 AT Up 33.8 148.9 Up 04:57:07 - 05:19:07 2461
Paisley 05:08:02 -13.3 AT Up 34.2 150.4 Up 04:57:02 - 05:19:02 2455
Klamath Falls 05:08:07 -13.0 AT Up 34.1 148.9 Up 04:57:07 - 05:19:07 2439
Lakeview 05:08:03 -13.7 AT Up 34.7 150.4 Up 04:57:03 - 05:19:03 2421
Cedarville 05:08:03 -14.3 AT Up 35.3 150.4 Up 04:57:03 - 05:19:03 2377
Fall River/Burney 05:08:09 -14.0 AT Up 35.3 148.9 Up 04:57:09 - 05:19:09 2359
Susanville 05:08:07 -14.9 AT Up 36.1 149.5 Up 04:57:07 - 05:19:07 2310
Greenville 05:08:09 -14.9 AT Up 36.2 149.1 Up 04:57:09 - 05:19:09 2295
Gimple 05:08:08 -15.0 AT Up 36.3 149.1 Up 04:57:08 - 05:19:08 2294
Quincy 05:08:09 -15.1 AT Up 36.4 149.0 Up 04:57:09 - 05:19:09 2281
Portola 05:08:08 -15.4 AT Up 36.7 149.5 Up 04:57:08 - 05:19:08 2268
Reno 05:08:06 -16.0 AT Up 37.2 150.1 Up 04:57:06 - 05:19:06 2243
Carson City 05:08:07 -16.2 AT Up 37.5 150.0 Up 04:57:07 - 05:19:07 2218
Gardnerville 05:08:07 -16.4 AT Up 37.7 150.0 Up 04:57:07 - 05:19:07 2201
Yerington 05:08:05 -16.7 AT Up 37.9 150.6 Up 04:57:05 - 05:19:05 2197
Hawthorne 05:08:04 -17.3 AT Up 38.5 151.1 Up 04:57:04 - 05:19:04 2159
Lee Vining 05:08:07 -17.5 AT Up 38.8 150.3 Up 04:57:07 - 05:19:07 2126
Tonopah 05:08:00 -18.4 Dark Up 39.4 152.5 Up 04:57:00 - 05:19:00 2110
Dunrhomin 05:07:12 -21.9 Dark Up 40.5 167.9 Up 04:56:12 - 05:18:12 2092
Bishop 05:08:05 -18.3 Dark Up 39.6 150.9 Up 04:57:05 - 05:19:05 2075
Beatty 05:08:00 -19.5 Dark Up 40.6 152.7 Up 04:57:00 - 05:19:00 2021
Indian Springs 05:07:57 -20.3 Dark Up 41.3 153.8 Up 04:56:57 - 05:18:57 1983
CPSLO 05:08:17 -18.6 Dark Up 40.5 147.4 Up 04:57:17 - 05:19:17 1953
Henderson 05:07:55 -21.1 Dark Up 42.0 154.5 Up 04:56:55 - 05:18:55 1935
Patrick 05:07:52 -22.1 Dark Up 43.0 155.6 Up 04:56:52 - 05:18:52 1873
Laughlin/Bullhead City 05:07:55 -22.0 Dark Up 43.0 154.6 Up 04:56:55 - 05:18:55 1864
Kingman/Dolan Springs 05:07:53 -22.2 Dark Up 43.1 155.3 Up 04:56:53 - 05:18:53 1859
Mohave Valley 05:07:55 -22.2 Dark Up 43.2 154.5 Up 04:56:55 - 05:18:55 1844
Wildwood 05:08:12 -20.7 Dark Up 42.4 149.3 Up 04:57:12 - 05:19:12 1838
Lake Havasu City 05:07:55 -22.6 Dark Up 43.7 154.7 Up 04:56:55 - 05:18:55 1810
Idyllwild 05:08:05 -22.0 Dark Up 43.5 151.4 Up 04:57:05 - 05:19:05 1787
Parker 05:07:56 -22.9 Dark Up 44.0 154.6 Up 04:56:56 - 05:18:56 1783
Blythe 05:07:58 -23.2 Dark Up 44.4 154.0 Up 04:56:58 - 05:18:58 1747
Calipatria 05:08:02 -23.1 Dark Up 44.5 152.6 Up 04:57:02 - 05:19:02 1722
George/Scottsdale 05:07:47 -24.5 Dark Up 45.2 157.6 Up 04:56:47 - 05:18:47 1715
Yuma 05:07:59 -23.9 Dark Up 45.2 153.5 Up 04:56:59 - 05:18:59 1676

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, (2025/07/12 05:07UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 28.88  56
60Bet Oph      17:43:28.3 +04:34:06  2.8 14.14  50
PPM 201392     18:06:07.4 -08:19:27  6.1  0.35  39
PPM 201369     18:04:58.6 -08:44:21  9.6  0.22  39
533396         18:04:57.6 -08:30:54 15.9        39
Positions are for J2000

Event circumstances last updated at 2021/11/11 00:48:59 UT

Marc W. Buie, Southwest Research Institute

RECON