RECON: TNO occultation with 529780

Event between (529780) 10MQ116 and star GA1180:00256275 with event index number of 2155917

Geocentric closest approach at 2026/11/10 04:05:45 UTC

J2000 position of star is 01:48:35.4 +29:56:57
Equinox of date position of star is 01:49:51.0 +30:03:29
Stellar brightness G=15.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 155 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=22.0

[RECON map]
TNO is 46.1 AU from the Sun and 45.1 AU from the Earth.
The TNO is moving 25.7 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 173 seconds.
The 1-sigma cross-track error in the shadow position is 4794 km.
The sky-plane scale is 32738.0 km/arcsec.

The TNO has an absolute magnitude Hv=5.4
Diameter=498.9 km assuming a 5% albedo -- 19.4 sec chord
Diameter=203.7 km assuming a 30% albedo -- 7.9 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 529780, (2026/11/10 04:06UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:27.9 +16:33:41  0.8 40.46 164
Hamal          02:08:41.6 +23:35:18  2.0  7.70 160
2Alp Tri       01:54:37.2 +29:42:32  3.4  1.04 156
PPM 066663     01:51:56.5 +30:56:08  8.4  0.94 156
PPM 066605     01:48:11.1 +30:19:39  9.2  0.49 155
PPM 066633     01:50:14.1 +30:23:25 10.3  0.31 155
529780         01:50:07.6 +30:04:55 15.6       156
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 23.0 km RECON observability=1.0 and success probability=10.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 04:06:35 -35.3 Dark Down 55.8 113.3 Up 03:51:42 - 04:21:27 -838
Victoria 04:06:47 -34.0 Dark Down 54.8 107.1 Up 03:51:54 - 04:21:39 -861
Peachland 04:06:36 -35.9 Dark Down 56.6 112.7 Up 03:51:44 - 04:21:29 -928
Kelowna 04:06:35 -36.1 Dark Down 56.7 113.2 Up 03:51:43 - 04:21:28 -932
Summerland 04:06:37 -36.0 Dark Down 56.7 112.6 Up 03:51:44 - 04:21:29 -942
Penticton 04:06:37 -36.1 Dark Down 56.8 112.7 Up 03:51:44 - 04:21:29 -952
Oliver 04:06:38 -36.2 Dark Down 56.9 112.2 Up 03:51:46 - 04:21:31 -977
Anarchist Mountain Observatory 04:06:38 -36.4 Dark Down 57.1 112.1 Up 03:51:46 - 04:21:31 -997
Tonasket 04:06:39 -36.5 Dark Down 57.2 111.6 Up 03:51:47 - 04:21:32 -1017
Okanogan 04:06:41 -36.5 Dark Down 57.2 111.0 Up 03:51:48 - 04:21:33 -1035
Manson/Chelan 04:06:43 -36.2 Dark Down 57.0 109.7 Up 03:51:51 - 04:21:36 -1046
Brewster 04:06:42 -36.4 Dark Down 57.2 110.4 Up 03:51:49 - 04:21:34 -1046
Wenatchee 04:06:45 -36.3 Dark Down 57.1 108.8 Up 03:51:52 - 04:21:37 -1073
Ellensburg 04:06:46 -36.2 Dark Down 57.0 108.0 Up 03:51:54 - 04:21:39 -1094
Yakima 04:06:48 -36.3 Dark Down 57.2 107.4 Up 03:51:55 - 04:21:40 -1123
Toppenish/White Swan 04:06:48 -36.5 Dark Down 57.3 107.2 Up 03:51:56 - 04:21:41 -1147
Goldendale 04:06:51 -36.3 Dark Down 57.2 106.0 Up 03:51:58 - 04:21:43 -1169
The Dalles 04:06:52 -36.1 Dark Down 57.0 105.3 Up 03:52:00 - 04:21:45 -1169
Maupin 04:06:53 -36.3 Dark Down 57.2 104.7 Up 03:52:01 - 04:21:46 -1205
PNWRO 04:06:46 -37.6 Dark Down 58.4 108.2 Up 03:51:54 - 04:21:39 -1240
Sisters 04:06:57 -36.2 Dark Down 57.1 103.0 Up 03:52:05 - 04:21:50 -1248
Bend 04:06:57 -36.4 Dark Down 57.3 102.8 Up 03:52:05 - 04:21:50 -1278
Sleaford 04:06:03 -42.8 Dark Down 62.5 134.9 Up 03:51:10 - 04:20:55 -1284
Oregon Observatory 04:06:58 -36.3 Dark Down 57.3 102.5 Up 03:52:05 - 04:21:50 -1285
North Lake 04:06:59 -36.9 Dark Down 57.8 102.0 Up 03:52:07 - 04:21:52 -1359
Chiloquin 04:07:03 -36.3 Dark Down 57.3 100.1 Up 03:52:10 - 04:21:55 -1366
Klamath Falls 04:07:04 -36.4 Dark Down 57.4 99.6 Up 03:52:11 - 04:21:56 -1396
Lakeview 04:07:01 -37.5 Dark Down 58.4 100.8 Up 03:52:08 - 04:21:53 -1466
Fall River/Burney 04:07:07 -36.9 Dark Down 57.9 98.1 Up 03:52:14 - 04:21:59 -1505
Cedarville 04:07:03 -37.7 Dark Down 58.7 99.9 Up 03:52:10 - 04:21:55 -1526
Susanville 04:07:07 -37.6 Dark Down 58.5 97.7 Up 03:52:14 - 04:21:59 -1591
Greenville 04:07:09 -37.4 Dark Down 58.3 97.1 Up 03:52:16 - 04:22:01 -1598
Gimple 04:07:08 -37.5 Dark Down 58.4 97.1 Up 03:52:16 - 04:22:01 -1603
Quincy 04:07:09 -37.4 Dark Down 58.4 96.7 Up 03:52:17 - 04:22:02 -1615
Portola 04:07:09 -37.8 Dark Down 58.7 96.9 Up 03:52:16 - 04:22:01 -1648
Reno 04:07:08 -38.4 Dark Down 59.3 97.0 Up 03:52:15 - 04:22:00 -1701
Carson City 04:07:09 -38.4 Dark Down 59.3 96.4 Up 03:52:16 - 04:22:01 -1731
Gardnerville 04:07:10 -38.5 Dark Down 59.4 96.0 Up 03:52:17 - 04:22:02 -1753
Yerington 04:07:08 -39.0 Dark Down 59.8 96.6 Up 03:52:16 - 04:22:01 -1778
Hawthorne 04:07:08 -39.4 Dark Down 60.3 96.2 Up 03:52:16 - 04:22:01 -1842
Lee Vining 04:07:11 -39.2 Dark Down 60.0 94.8 Up 03:52:19 - 04:22:04 -1864
Bishop 04:07:11 -39.8 Dark Down 60.6 94.3 Up 03:52:18 - 04:22:03 -1950
Tonopah 04:07:06 -40.6 Dark Down 61.4 96.4 Up 03:52:14 - 04:21:59 -1951
Beatty 04:07:09 -41.2 Dark Down 61.9 94.7 Up 03:52:16 - 04:22:01 -2070
Indian Springs 04:07:07 -42.1 Dark Down 62.8 94.8 Up 03:52:14 - 04:21:59 -2152
Wildwood 04:07:21 -40.1 Dark Down 60.5 88.4 Up 03:52:28 - 04:22:13 -2214
Henderson 04:07:07 -42.7 Dark Down 63.4 94.3 Up 03:52:14 - 04:21:59 -2233
Dunrhomin 04:06:31 -48.9 Dark Down 69.8 114.0 Up 03:51:38 - 04:21:23 -2323
Laughlin/Bullhead City 04:07:08 -43.2 Dark Down 63.8 92.8 Up 03:52:15 - 04:22:00 -2328
Idyllwild 04:07:17 -41.7 Dark Down 62.1 88.7 Up 03:52:25 - 04:22:10 -2342
Patrick 04:07:06 -43.7 Dark Down 64.4 93.8 Up 03:52:13 - 04:21:58 -2343
Mohave Valley 04:07:09 -43.3 Dark Down 63.8 92.2 Up 03:52:16 - 04:22:01 -2353
Kingman/Dolan Springs 04:07:07 -43.6 Dark Down 64.2 93.2 Up 03:52:14 - 04:21:59 -2353
Lake Havasu City 04:07:09 -43.5 Dark Down 64.0 91.6 Up 03:52:17 - 04:22:02 -2400
Parker 04:07:10 -43.6 Dark Down 64.1 90.9 Up 03:52:17 - 04:22:02 -2432
Calipatria 04:07:16 -42.8 Dark Down 63.1 88.2 Up 03:52:23 - 04:22:08 -2457
Yuma 04:07:15 -43.5 Dark Down 63.8 87.7 Up 03:52:22 - 04:22:07 -2542
George/Scottsdale 04:07:05 -45.7 Dark Down 66.1 91.4 Up 03:52:12 - 04:21:57 -2593

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 529780, (2026/11/10 04:06UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 40.46 164
Hamal          02:07:10.7 +23:27:41  2.0  7.70 160
2Alp Tri       01:53:04.9 +29:34:39  3.4  1.04 156
PPM 066663     01:50:23.9 +30:48:12  8.4  0.94 156
PPM 066605     01:46:39.1 +30:11:39  9.2  0.49 155
PPM 066633     01:48:41.9 +30:15:27 10.3  0.31 155
529780         01:48:35.4 +29:56:57 15.6       155
Positions are for J2000

Event circumstances last updated at 2022/01/18 00:37:01 UT

Marc W. Buie, Southwest Research Institute

RECON