RECON: TNO occultation with 468861

Event between (468861) 13LU28 and star GA0980:01140142 with event index number of 2656030

Geocentric closest approach at 2026/11/25 06:14:31 UTC

J2000 position of star is 05:57:03.6 +09:13:06
Equinox of date position of star is 05:58:17.2 +09:13:11
Stellar brightness G=14.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 26 degrees from the moon. Moon is 99% illuminated.
TNO apparent brightness V=18.5

[RECON map]
TNO is 10.1 AU from the Sun and 9.2 AU from the Earth.
The TNO is moving 36.9 km/sec on the sky relative to the star, or, 19.9 arcsec/hr.
The 1-sigma error in the time of the event is 51 seconds.
The 1-sigma cross-track error in the shadow position is 4633 km.
The sky-plane scale is 6662.4 km/arcsec.

The TNO has an absolute magnitude Hv=8.4
Diameter=128.2 km assuming a 5% albedo -- 3.5 sec chord
Diameter=52.4 km assuming a 30% albedo -- 1.4 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 468861, (2026/11/25 06:14UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:37.7 +07:24:35  0.4  1.87  27
Bellatrix      05:26:34.5 +06:22:18  1.6  8.41  23
PPM 149523     05:51:31.6 +09:52:37  6.4  1.85  24
PPM 149689     05:59:02.0 +09:34:56  8.1  0.38  25
PPM 149700     05:59:34.3 +09:17:00  9.3  0.26  26
PPM 149670     05:58:03.6 +09:03:29 10.4  0.20  26
468861         05:58:32.2 +09:13:11 14.7        26
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 17.7 km RECON observability=1.0 and success probability=5.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 06:15:09 -54.9 Dark Up 30.8 115.7 Up 06:10:23 - 06:19:54 5997
Victoria 06:15:17 -55.1 Dark Up 29.9 111.8 Low 06:10:32 - 06:20:03 5963
Peachland 06:15:10 -55.9 Dark Up 31.6 115.8 Up 06:10:25 - 06:19:56 5937
Kelowna 06:15:10 -55.9 Dark Up 31.7 116.1 Up 06:10:24 - 06:19:55 5935
Summerland 06:15:10 -56.0 Dark Up 31.7 115.8 Up 06:10:25 - 06:19:56 5927
Penticton 06:15:11 -56.1 Dark Up 31.8 115.8 Up 06:10:25 - 06:19:56 5921
Oliver 06:15:12 -56.4 Dark Up 31.9 115.6 Up 06:10:26 - 06:19:57 5903
Anarchist Mountain Observatory 06:15:12 -56.6 Dark Up 32.1 115.7 Up 06:10:26 - 06:19:57 5889
Tonasket 06:15:13 -56.8 Dark Up 32.2 115.5 Up 06:10:27 - 06:19:58 5874
Okanogan 06:15:14 -57.0 Dark Up 32.3 115.2 Up 06:10:28 - 06:19:59 5860
Brewster 06:15:14 -57.1 Dark Up 32.3 114.8 Up 06:10:29 - 06:20:00 5851
Manson/Chelan 06:15:15 -57.1 Dark Up 32.1 114.4 Up 06:10:30 - 06:20:01 5849
Wenatchee 06:15:17 -57.4 Dark Up 32.2 113.9 Up 06:10:31 - 06:20:02 5828
Ellensburg 06:15:18 -57.6 Dark Up 32.3 113.5 Up 06:10:32 - 06:20:03 5811
Yakima 06:15:19 -57.9 Dark Up 32.4 113.3 Up 06:10:33 - 06:20:04 5789
Toppenish/White Swan 06:15:19 -58.1 Dark Up 32.6 113.3 Up 06:10:34 - 06:20:05 5773
Goldendale 06:15:21 -58.3 Dark Up 32.6 112.6 Up 06:10:36 - 06:20:07 5753
The Dalles 06:15:22 -58.3 Dark Up 32.4 112.1 Up 06:10:36 - 06:20:07 5750
Maupin 06:15:23 -58.6 Dark Up 32.6 112.0 Up 06:10:37 - 06:20:08 5723
PNWRO 06:15:18 -59.1 Dark Up 33.7 114.4 Up 06:10:33 - 06:20:04 5713
Sleaford 06:14:46 -57.9 Dark Up 37.5 131.1 Up 06:10:01 - 06:19:32 5713
Sisters 06:15:25 -59.0 Dark Up 32.6 111.0 Up 06:10:40 - 06:20:11 5686
Bend 06:15:26 -59.3 Dark Up 32.9 111.1 Up 06:10:40 - 06:20:11 5665
Oregon Observatory 06:15:26 -59.3 Dark Up 32.9 110.9 Up 06:10:41 - 06:20:12 5658
North Lake 06:15:27 -60.0 Dark Up 33.5 111.0 Up 06:10:42 - 06:20:13 5606
Chiloquin 06:15:30 -59.9 Dark Up 33.1 109.8 Up 06:10:44 - 06:20:15 5591
Klamath Falls 06:15:31 -60.2 Dark Up 33.2 109.6 Up 06:10:45 - 06:20:16 5568
Lakeview 06:15:29 -61.0 Dark Up 34.2 110.8 Up 06:10:44 - 06:20:15 5526
Fall River/Burney 06:15:33 -61.1 Dark Up 33.9 109.2 Up 06:10:47 - 06:20:18 5483
Cedarville 06:15:30 -61.5 Dark Up 34.6 110.5 Up 06:10:45 - 06:20:16 5480
Susanville 06:15:34 -62.0 Dark Up 34.6 109.4 Up 06:10:48 - 06:20:19 5422
Greenville 06:15:34 -62.0 Dark Up 34.5 109.0 Up 06:10:49 - 06:20:20 5413
Gimple 06:15:34 -62.0 Dark Up 34.6 109.1 Up 06:10:49 - 06:20:20 5410
Quincy 06:15:35 -62.1 Dark Up 34.6 108.9 Up 06:10:49 - 06:20:20 5399
Portola 06:15:35 -62.4 Dark Up 35.0 109.2 Up 06:10:49 - 06:20:20 5378
Reno 06:15:34 -63.0 Dark Up 35.5 109.5 Up 06:10:49 - 06:20:20 5341
Carson City 06:15:35 -63.2 Dark Up 35.7 109.3 Up 06:10:50 - 06:20:21 5317
Gardnerville 06:15:36 -63.4 Dark Up 35.8 109.2 Up 06:10:50 - 06:20:21 5299
Yerington 06:15:35 -63.8 Dark Up 36.2 109.7 Up 06:10:50 - 06:20:21 5285
Hawthorne 06:15:35 -64.4 Dark Up 36.8 109.8 Up 06:10:50 - 06:20:21 5238
Lee Vining 06:15:37 -64.4 Dark Up 36.6 109.0 Up 06:10:52 - 06:20:23 5215
Tonopah 06:15:34 -65.5 Dark Up 38.0 110.6 Up 06:10:49 - 06:20:20 5164
Bishop 06:15:38 -65.2 Dark Up 37.3 109.2 Up 06:10:52 - 06:20:23 5151
Beatty 06:15:36 -66.5 Dark Up 38.7 110.2 Up 06:10:51 - 06:20:22 5068
Indian Springs 06:15:36 -67.4 Dark Up 39.6 110.8 Up 06:10:50 - 06:20:21 5011
Henderson 06:15:36 -68.2 Dark Up 40.3 111.0 Up 06:10:50 - 06:20:21 4950
Dunrhomin 06:15:12 -69.3 Dark Up 45.2 123.7 Up 06:10:26 - 06:19:57 4942
CU-SBO 06:15:12 -69.5 Dark Up 45.3 123.4 Up 06:10:27 - 06:19:58 4927
Wildwood 06:15:45 -66.9 Dark Up 38.2 106.6 Up 06:11:00 - 06:20:31 4922
Laughlin/Bullhead City 06:15:37 -69.0 Dark Up 41.0 110.6 Up 06:10:52 - 06:20:23 4873
Patrick 06:15:35 -69.3 Dark Up 41.4 111.4 Up 06:10:50 - 06:20:21 4868
Kingman/Dolan Springs 06:15:36 -69.3 Dark Up 41.4 111.1 Up 06:10:50 - 06:20:21 4858
Mohave Valley 06:15:38 -69.2 Dark Up 41.1 110.4 Up 06:10:52 - 06:20:23 4852
Idyllwild 06:15:44 -68.4 Dark Up 39.8 107.8 Up 06:10:58 - 06:20:29 4836
Lake Havasu City 06:15:38 -69.6 Dark Up 41.4 110.3 Up 06:10:52 - 06:20:23 4814
Parker 06:15:38 -69.8 Dark Up 41.5 110.0 Up 06:10:53 - 06:20:24 4787
Calipatria 06:15:43 -69.6 Dark Up 40.9 108.2 Up 06:10:57 - 06:20:28 4750
Yuma 06:15:42 -70.4 Dark Up 41.8 108.5 Up 06:10:56 - 06:20:27 4687
George/Scottsdale 06:15:36 -71.6 Dark Up 43.6 111.7 Up 06:10:51 - 06:20:22 4674

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 468861, (2026/11/25 06:14UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  1.87  27
Bellatrix      05:25:07.8 +06:20:58  1.6  8.41  23
PPM 149523     05:50:02.7 +09:52:15  6.4  1.85  24
PPM 149689     05:57:33.2 +09:34:52  8.1  0.38  25
PPM 149700     05:58:05.7 +09:16:57  9.3  0.26  26
PPM 149670     05:56:35.2 +09:03:23 10.4  0.20  26
468861         05:57:03.6 +09:13:06 14.7        26
Positions are for J2000

Event circumstances last updated at 2022/05/05 23:09:47 UT

Marc W. Buie, Southwest Research Institute

RECON