RECON: TNO occultation with 10WM75

Event between 10WM75 and star GA0940:01484474 with event index number of 2109793

Geocentric closest approach at 2026/12/02 10:43:58 UTC

J2000 position of star is 06:23:16.8 +04:42:27
Equinox of date position of star is 06:24:27.0 +04:41:41
Stellar brightness G=15.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 79 degrees from the moon. Moon is 37% illuminated.
TNO apparent brightness V=22.4

[RECON map]
TNO is 43.0 AU from the Sun and 42.1 AU from the Earth.
The TNO is moving 23.1 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 353 seconds.
The 1-sigma cross-track error in the shadow position is 3267 km.
The sky-plane scale is 30545.3 km/arcsec.

The TNO has an absolute magnitude Hv=6.0
Diameter=376.7 km assuming a 5% albedo -- 16.3 sec chord
Diameter=153.8 km assuming a 30% albedo -- 6.7 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 10WM75, (2026/12/02 10:44UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:37.8 +07:24:35  0.4  7.49  86
Alhena         06:39:16.0 +16:22:26  1.9 12.22  76
PPM 150401     06:24:43.6 +03:44:55  6.0  0.94  79
PPM 150453     06:26:15.9 +04:51:18  7.4  0.42  78
PPM 150388     06:24:13.3 +04:29:47  8.9  0.23  79
10WM75         06:24:42.5 +04:41:31 15.4        78
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 2.6 sigma about the mid-time.
The median site spacing is 25.0 km RECON observability=1.0 and success probability=8.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 10:42:36 -46.0 Dark Up 42.2 201.4 Up 10:27:36 - 10:57:36 5665
Sleaford 10:41:58 -37.1 Dark Up 36.5 218.4 Up 10:26:58 - 10:56:58 5639
Kelowna 10:42:33 -45.8 Dark Up 42.7 202.9 Up 10:27:33 - 10:57:33 5589
Peachland 10:42:34 -46.1 Dark Up 42.9 202.5 Up 10:27:34 - 10:57:34 5584
Summerland 10:42:33 -46.1 Dark Up 43.0 202.7 Up 10:27:33 - 10:57:33 5570
Penticton 10:42:33 -46.0 Dark Up 43.0 202.9 Up 10:27:33 - 10:57:33 5564
Oliver 10:42:33 -46.2 Dark Up 43.4 203.0 Up 10:27:33 - 10:57:33 5535
Victoria 10:42:44 -48.7 Dark Up 44.9 198.1 Up 10:27:44 - 10:57:44 5525
Anarchist Mountain Observatory 10:42:32 -46.1 Dark Up 43.5 203.3 Up 10:27:32 - 10:57:32 5519
Tonasket 10:42:32 -46.3 Dark Up 43.8 203.3 Up 10:27:32 - 10:57:32 5494
Okanogan 10:42:33 -46.5 Dark Up 44.1 203.3 Up 10:27:33 - 10:57:33 5468
Brewster 10:42:34 -46.7 Dark Up 44.4 203.1 Up 10:27:34 - 10:57:34 5447
Manson/Chelan 10:42:34 -47.0 Dark Up 44.7 202.7 Up 10:27:34 - 10:57:34 5434
Wenatchee 10:42:35 -47.3 Dark Up 45.2 202.6 Up 10:27:35 - 10:57:35 5397
Ellensburg 10:42:35 -47.6 Dark Up 45.6 202.5 Up 10:27:35 - 10:57:35 5364
Yakima 10:42:35 -47.7 Dark Up 46.0 202.6 Up 10:27:35 - 10:57:35 5330
Toppenish/White Swan 10:42:35 -47.7 Dark Up 46.2 202.9 Up 10:27:35 - 10:57:35 5310
Goldendale 10:42:36 -48.2 Dark Up 46.8 202.6 Up 10:27:36 - 10:57:36 5268
PNWRO 10:42:30 -46.9 Dark Up 46.1 205.1 Up 10:27:30 - 10:57:30 5260
The Dalles 10:42:37 -48.5 Dark Up 47.1 202.2 Up 10:27:37 - 10:57:37 5253
Maupin 10:42:37 -48.6 Dark Up 47.4 202.5 Up 10:27:37 - 10:57:37 5215
Sisters 10:42:38 -49.2 Dark Up 48.4 202.2 Up 10:27:38 - 10:57:38 5145
Bend 10:42:38 -49.1 Dark Up 48.5 202.6 Up 10:27:38 - 10:57:38 5121
Oregon Observatory 10:42:38 -49.2 Dark Up 48.7 202.5 Up 10:27:38 - 10:57:38 5108
North Lake 10:42:36 -49.0 Dark Up 49.2 203.6 Up 10:27:36 - 10:57:36 5044
Chiloquin 10:42:39 -49.9 Dark Up 50.1 202.5 Up 10:27:39 - 10:57:39 4996
Klamath Falls 10:42:39 -50.0 Dark Up 50.4 202.8 Up 10:27:39 - 10:57:39 4964
Lakeview 10:42:34 -49.0 Dark Up 50.0 204.9 Up 10:27:34 - 10:57:34 4942
Cedarville 10:42:33 -49.0 Dark Up 50.5 205.5 Up 10:27:33 - 10:57:33 4881
Fall River/Burney 10:42:38 -50.0 Dark Up 51.3 203.9 Up 10:27:38 - 10:57:38 4853
Susanville 10:42:35 -49.6 Dark Up 51.7 205.4 Up 10:27:35 - 10:57:35 4785
Greenville 10:42:37 -49.9 Dark Up 52.0 205.1 Up 10:27:37 - 10:57:37 4764
Gimple 10:42:35 -49.9 Dark Up 52.0 205.2 Up 10:27:35 - 10:57:35 4762
Quincy 10:42:35 -50.0 Dark Up 52.2 205.2 Up 10:27:35 - 10:57:35 4745
Portola 10:42:34 -49.6 Dark Up 52.2 206.0 Up 10:27:34 - 10:57:34 4727
Reno 10:42:31 -49.2 Dark Up 52.2 207.1 Up 10:27:31 - 10:57:31 4694
Carson City 10:42:32 -49.3 Dark Up 52.5 207.4 Up 10:27:32 - 10:57:32 4660
Gardnerville 10:42:31 -49.3 Dark Up 52.7 207.6 Up 10:27:31 - 10:57:31 4637
Yerington 10:42:29 -48.8 Dark Up 52.4 208.4 Up 10:27:29 - 10:57:29 4633
Dunrhomin 10:41:43 -38.2 Dark Up 45.0 226.1 Up 10:26:43 - 10:56:43 4588
Hawthorne 10:42:27 -48.5 Dark Up 52.6 209.5 Up 10:27:27 - 10:57:27 4583
Lee Vining 10:42:29 -49.0 Dark Up 53.3 209.1 Up 10:27:29 - 10:57:29 4536
Tonopah 10:42:22 -47.5 Dark Up 52.5 211.9 Up 10:27:22 - 10:57:22 4520
Bishop 10:42:26 -48.5 Dark Up 53.6 210.6 Up 10:27:26 - 10:57:26 4469
Beatty 10:42:20 -47.3 Dark Up 53.3 213.4 Up 10:27:20 - 10:57:20 4403
Indian Springs 10:42:16 -46.5 Dark Up 53.1 215.2 Up 10:27:16 - 10:57:16 4358
Henderson 10:42:14 -46.0 Dark Up 53.2 216.7 Up 10:27:14 - 10:57:14 4297
Patrick 10:42:10 -45.2 Dark Up 53.1 218.8 Up 10:27:10 - 10:57:10 4221
Laughlin/Bullhead City 10:42:13 -45.8 Dark Up 53.7 218.0 Up 10:27:13 - 10:57:13 4206
Kingman/Dolan Springs 10:42:10 -45.4 Dark Up 53.4 218.7 Up 10:27:10 - 10:57:10 4202
Mohave Valley 10:42:13 -45.8 Dark Up 53.9 218.2 Up 10:27:13 - 10:57:13 4179
Wildwood 10:42:27 -49.1 Dark Up 56.4 212.8 Up 10:27:27 - 10:57:27 4155
Lake Havasu City 10:42:11 -45.6 Dark Up 54.1 218.9 Up 10:27:11 - 10:57:11 4137
Parker 10:42:11 -45.6 Dark Up 54.3 219.2 Up 10:27:11 - 10:57:11 4102
Idyllwild 10:42:20 -47.6 Dark Up 55.9 216.0 Up 10:27:20 - 10:57:20 4094
George/Scottsdale 10:42:03 -43.6 Dark Up 53.3 223.0 Up 10:27:03 - 10:57:03 4028
Calipatria 10:42:15 -46.7 Dark Up 55.7 218.4 Up 10:27:15 - 10:57:15 4017
Yuma 10:42:12 -45.9 Dark Up 55.6 220.1 Up 10:27:12 - 10:57:12 3962

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, (2026/12/02 10:44UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  7.49  86
Alhena         06:37:42.8 +16:23:56  1.9 12.22  76
PPM 150401     06:23:18.5 +03:45:52  6.0  0.94  79
PPM 150453     06:24:50.1 +04:52:18  7.4  0.42  78
PPM 150388     06:22:47.7 +04:30:42  8.9  0.23  79
10WM75         06:23:16.8 +04:42:27 15.4        79
Positions are for J2000

Event circumstances last updated at 2022/01/19 00:00:37 UT

Marc W. Buie, Southwest Research Institute

RECON