RECON: TNO occultation with 10WM75

Event between 10WM75 and star GA0940:01513549 with event index number of 2109786

Geocentric closest approach at 2026/11/11 08:00:52 UTC

J2000 position of star is 06:24:35.1 +04:48:20
Equinox of date position of star is 06:25:45.4 +04:47:32
Stellar brightness G=15.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 146 degrees from the moon. Moon is 4% illuminated.
TNO apparent brightness V=22.4

[RECON map]
TNO is 43.0 AU from the Sun and 42.3 AU from the Earth.
The TNO is moving 17.7 km/sec on the sky relative to the star, or, 2.1 arcsec/hr.
The 1-sigma error in the time of the event is 420 seconds.
The 1-sigma cross-track error in the shadow position is 4691 km.
The sky-plane scale is 30697.0 km/arcsec.

The TNO has an absolute magnitude Hv=6.0
Diameter=376.7 km assuming a 5% albedo -- 21.3 sec chord
Diameter=153.8 km assuming a 30% albedo -- 8.7 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 10WM75, (2026/11/11 08:01UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:37.6 +07:24:35  0.4  7.76 153
Alhena         06:39:15.8 +16:22:27  1.9 12.03 150
PPM 150401     06:24:43.4 +03:44:55  6.0  1.09 146
PPM 150453     06:26:15.8 +04:51:18  7.4  0.09 146
10WM75         06:26:00.7 +04:47:21 15.4       146
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 2.1 sigma about the mid-time.
The median site spacing is 17.0 km RECON observability=1.0 and success probability=4.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 08:01:36 -56.6 Dark Down 30.4 124.3 Up 07:46:36 - 08:16:36 7683
Victoria 08:01:51 -58.9 Dark Down 29.9 120.4 Low 07:46:51 - 08:16:51 7661
Peachland 08:01:39 -57.5 Dark Down 31.3 124.5 Up 07:46:39 - 08:16:39 7628
Kelowna 08:01:37 -57.3 Dark Down 31.4 124.8 Up 07:46:37 - 08:16:37 7625
Summerland 08:01:37 -57.6 Dark Down 31.4 124.5 Up 07:46:37 - 08:16:37 7618
Penticton 08:01:39 -57.7 Dark Down 31.5 124.5 Up 07:46:39 - 08:16:39 7612
Oliver 08:01:41 -58.0 Dark Down 31.7 124.4 Up 07:46:41 - 08:16:41 7596
Anarchist Mountain Observatory 08:01:39 -58.2 Dark Down 31.9 124.5 Up 07:46:39 - 08:16:39 7584
Tonasket 08:01:42 -58.5 Dark Down 32.0 124.3 Up 07:46:42 - 08:16:42 7571
Okanogan 08:01:43 -58.8 Dark Down 32.2 123.9 Up 07:46:43 - 08:16:43 7559
Brewster 08:01:45 -59.1 Dark Down 32.2 123.6 Up 07:46:45 - 08:16:45 7551
Manson/Chelan 08:01:48 -59.4 Dark Down 32.1 123.1 Up 07:46:48 - 08:16:48 7550
Wenatchee 08:01:48 -59.9 Dark Down 32.3 122.7 Up 07:46:48 - 08:16:48 7532
Ellensburg 08:01:53 -60.3 Dark Down 32.4 122.3 Up 07:46:53 - 08:16:53 7517
Yakima 08:01:54 -60.7 Dark Down 32.6 122.1 Up 07:46:54 - 08:16:54 7497
Toppenish/White Swan 08:01:57 -60.9 Dark Down 32.8 122.1 Up 07:46:57 - 08:16:57 7482
Goldendale 08:01:59 -61.5 Dark Down 32.9 121.4 Up 07:46:59 - 08:16:59 7466
The Dalles 08:02:02 -61.7 Dark Down 32.8 121.0 Up 07:47:02 - 08:17:02 7464
Maupin 08:02:03 -62.1 Dark Down 33.0 120.9 Up 07:47:03 - 08:17:03 7439
PNWRO 08:01:54 -61.1 Dark Down 33.9 123.4 Up 07:46:54 - 08:16:54 7424
Sisters 08:02:09 -63.0 Dark Down 33.2 119.9 Up 07:47:09 - 08:17:09 7407
Bend 08:02:10 -63.3 Dark Down 33.5 120.0 Up 07:47:10 - 08:17:10 7387
Oregon Observatory 08:02:10 -63.4 Dark Down 33.5 119.8 Up 07:47:10 - 08:17:10 7381
Sleaford 08:00:48 -52.5 Dark Down 36.1 140.1 Up 07:45:48 - 08:15:48 7380
North Lake 08:02:10 -64.0 Dark Down 34.2 119.9 Up 07:47:10 - 08:17:10 7332
Chiloquin 08:02:19 -64.8 Dark Down 33.9 118.7 Up 07:47:19 - 08:17:19 7321
Klamath Falls 08:02:20 -65.1 Dark Down 34.1 118.6 Up 07:47:20 - 08:17:20 7299
Lakeview 08:02:15 -65.0 Dark Down 35.0 119.8 Up 07:47:15 - 08:17:15 7258
Fall River/Burney 08:02:24 -66.2 Dark Down 34.9 118.2 Up 07:47:24 - 08:17:24 7221
Cedarville 08:02:20 -65.6 Dark Down 35.5 119.6 Up 07:47:20 - 08:17:20 7215
Susanville 08:02:25 -66.8 Dark Down 35.7 118.5 Up 07:47:25 - 08:17:25 7163
Greenville 08:02:28 -67.1 Dark Down 35.7 118.1 Up 07:47:28 - 08:17:28 7155
Gimple 08:02:27 -67.1 Dark Down 35.7 118.1 Up 07:47:27 - 08:17:27 7152
Quincy 08:02:28 -67.3 Dark Down 35.8 117.9 Up 07:47:28 - 08:17:28 7143
Portola 08:02:28 -67.4 Dark Down 36.2 118.3 Up 07:47:28 - 08:17:28 7121
Reno 08:02:25 -67.5 Dark Down 36.7 118.7 Up 07:47:25 - 08:17:25 7086
Carson City 08:02:28 -67.9 Dark Down 36.9 118.5 Up 07:47:28 - 08:17:28 7064
Gardnerville 08:02:28 -68.1 Dark Down 37.1 118.4 Up 07:47:28 - 08:17:28 7047
Yerington 08:02:27 -67.9 Dark Down 37.4 118.9 Up 07:47:27 - 08:17:27 7032
Hawthorne 08:02:28 -68.3 Dark Down 38.0 119.1 Up 07:47:28 - 08:17:28 6987
Lee Vining 08:02:32 -68.9 Dark Down 38.0 118.3 Up 07:47:32 - 08:17:32 6967
Tonopah 08:02:27 -68.4 Dark Down 39.2 120.1 Up 07:47:27 - 08:17:27 6915
Bishop 08:02:32 -69.3 Dark Down 38.8 118.5 Up 07:47:32 - 08:17:32 6906
Beatty 08:02:30 -69.4 Dark Down 40.1 119.7 Up 07:47:30 - 08:17:30 6824
Indian Springs 08:02:27 -69.3 Dark Down 41.0 120.5 Up 07:47:27 - 08:17:27 6768
Henderson 08:02:28 -69.5 Dark Down 41.8 120.7 Up 07:47:28 - 08:17:28 6709
Wildwood 08:02:48 -72.5 Dark Down 40.2 116.0 Up 07:47:48 - 08:17:48 6692
Dunrhomin 08:01:34 -61.8 Dark Down 45.2 134.2 Up 07:46:34 - 08:16:34 6670
Laughlin/Bullhead City 08:02:30 -70.2 Dark Down 42.5 120.5 Up 07:47:30 - 08:17:30 6635
Patrick 08:02:27 -69.7 Dark Down 42.9 121.3 Up 07:47:27 - 08:17:27 6630
Kingman/Dolan Springs 08:02:28 -69.9 Dark Down 42.9 121.0 Up 07:47:28 - 08:17:28 6620
Mohave Valley 08:02:30 -70.4 Dark Down 42.7 120.3 Up 07:47:30 - 08:17:30 6616
Idyllwild 08:02:42 -72.2 Dark Down 41.7 117.4 Up 07:47:42 - 08:17:42 6606
Lake Havasu City 08:02:32 -70.6 Dark Down 43.0 120.2 Up 07:47:32 - 08:17:32 6580
Parker 08:02:34 -70.9 Dark Down 43.2 119.9 Up 07:47:34 - 08:17:34 6554
Calipatria 08:02:42 -72.3 Dark Down 42.9 118.0 Up 07:47:42 - 08:17:42 6523
Yuma 08:02:41 -72.3 Dark Down 43.7 118.4 Up 07:47:41 - 08:17:41 6461
George/Scottsdale 08:02:27 -70.1 Dark Down 45.2 121.9 Up 07:47:27 - 08:17:27 6441

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 10WM75, (2026/11/11 08:01UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  7.76 153
Alhena         06:37:42.8 +16:23:56  1.9 12.03 150
PPM 150401     06:23:18.5 +03:45:52  6.0  1.09 146
PPM 150453     06:24:50.1 +04:52:18  7.4  0.09 146
10WM75         06:24:35.1 +04:48:20 15.4       146
Positions are for J2000

Event circumstances last updated at 2022/01/18 23:33:51 UT

Marc W. Buie, Southwest Research Institute

RECON