RECON: TNO occultation with 523746

Event between (523746) 14UT114 and star GA1200:03018099 with event index number of 2323156

Geocentric closest approach at 2024/12/17 03:52:44 UTC

J2000 position of star is 07:32:09.4 +30:17:14
Equinox of date position of star is 07:33:33.8 +30:14:19
Stellar brightness G=15.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 4 degrees from the moon. Moon is 96% illuminated.
TNO apparent brightness V=21.2

[RECON map]
TNO is 16.5 AU from the Sun and 15.7 AU from the Earth.
The TNO is moving 19.1 km/sec on the sky relative to the star, or, 6.1 arcsec/hr.
The 1-sigma error in the time of the event is 431 seconds.
The 1-sigma cross-track error in the shadow position is 3298 km.
The sky-plane scale is 11352.9 km/arcsec.

The TNO has an absolute magnitude Hv=9.0
Diameter=95.5 km assuming a 5% albedo -- 5.0 sec chord
Diameter=39.0 km assuming a 30% albedo -- 2.0 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 523746, (2024/12/17 03:53UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:50.6 +27:57:50  1.1  3.65   5
PPM 072946     07:36:43.7 +30:54:16  6.3  0.93   5
PPM 097636     07:33:57.1 +29:55:00  9.8  0.32   4
523746         07:33:44.0 +30:13:57 15.1         4
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 24.8 km RECON observability=1.0 and success probability=6.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 03:56:50 -36.6 Dark Up 24.2 71.1 Low 03:41:50 - 04:11:50 6874
Victoria 03:56:59 -34.8 Dark Up 21.6 68.2 Low 03:41:59 - 04:11:59 6822
Peachland 03:56:52 -37.1 Dark Up 24.3 71.1 Low 03:41:52 - 04:11:52 6783
Kelowna 03:56:52 -37.3 Dark Up 24.5 71.4 Low 03:41:52 - 04:11:52 6781
Summerland 03:56:53 -37.2 Dark Up 24.3 71.1 Low 03:41:53 - 04:11:53 6768
Penticton 03:56:54 -37.2 Dark Up 24.3 71.2 Low 03:41:54 - 04:11:54 6759
Oliver 03:56:55 -37.3 Dark Up 24.2 71.0 Low 03:41:55 - 04:11:55 6732
Anarchist Mountain Observatory 03:56:55 -37.4 Dark Up 24.3 71.1 Low 03:41:55 - 04:11:55 6712
Tonasket 03:56:57 -37.4 Dark Up 24.1 70.9 Low 03:41:57 - 04:11:57 6690
Okanogan 03:56:58 -37.4 Dark Up 23.9 70.7 Low 03:41:58 - 04:11:58 6669
Brewster 03:56:59 -37.3 Dark Up 23.7 70.4 Low 03:41:59 - 04:11:59 6655
Manson/Chelan 03:57:00 -37.1 Dark Up 23.4 70.1 Low 03:42:00 - 04:12:00 6653
Wenatchee 03:57:02 -37.0 Dark Up 23.2 69.8 Low 03:42:02 - 04:12:02 6622
Ellensburg 03:57:04 -36.9 Dark Up 22.9 69.5 Low 03:42:04 - 04:12:04 6598
Yakima 03:57:05 -36.9 Dark Up 22.7 69.3 Low 03:42:05 - 04:12:05 6566
Toppenish/White Swan 03:57:06 -37.0 Dark Up 22.8 69.4 Low 03:42:06 - 04:12:06 6542
Sleaford 03:56:32 -44.9 Dark Up 33.2 82.0 Up 03:41:32 - 04:11:32 6517
Goldendale 03:57:08 -36.8 Dark Up 22.3 68.9 Low 03:42:08 - 04:12:08 6515
The Dalles 03:57:09 -36.5 Dark Up 22.0 68.6 Low 03:42:09 - 04:12:09 6511
Maupin 03:57:10 -36.6 Dark Up 21.9 68.5 Low 03:42:10 - 04:12:10 6473
PNWRO 03:57:06 -38.1 Dark Up 23.6 70.2 Low 03:42:06 - 04:12:06 6456
Sisters 03:57:14 -36.3 Dark Up 21.3 67.9 Low 03:42:14 - 04:12:14 6422
Bend 03:57:14 -36.5 Dark Up 21.3 68.0 Low 03:42:14 - 04:12:14 6393
Oregon Observatory 03:57:15 -36.4 Dark Up 21.2 67.8 Low 03:42:15 - 04:12:15 6384
North Lake 03:57:17 -36.9 Dark Up 21.3 67.9 Low 03:42:17 - 04:12:17 6310
Chiloquin 03:57:20 -36.2 Dark Up 20.4 67.1 Low 03:42:20 - 04:12:20 6293
Klamath Falls 03:57:21 -36.2 Dark Up 20.4 67.1 Low 03:42:21 - 04:12:21 6262
Lakeview 03:57:20 -37.3 Dark Up 21.3 67.9 Low 03:42:20 - 04:12:20 6200
Fall River/Burney 03:57:25 -36.5 Dark Up 20.2 66.9 Low 03:42:25 - 04:12:25 6148
Cedarville 03:57:22 -37.4 Dark Up 21.2 67.7 Low 03:42:22 - 04:12:22 6138
Susanville 03:57:26 -37.1 Dark Up 20.4 67.1 Low 03:42:26 - 04:12:26 6064
Greenville 03:57:27 -36.9 Dark Up 20.1 66.8 Low 03:42:27 - 04:12:27 6053
Gimple 03:57:27 -36.9 Dark Up 20.2 66.9 Low 03:42:27 - 04:12:27 6050
Quincy 03:57:28 -36.9 Dark Up 20.1 66.8 Low 03:42:28 - 04:12:28 6036
Portola 03:57:28 -37.2 Dark Up 20.3 67.0 Low 03:42:28 - 04:12:28 6005
Reno 03:57:29 -37.7 Dark Up 20.7 67.2 Low 03:42:29 - 04:12:29 5955
Carson City 03:57:30 -37.7 Dark Up 20.6 67.1 Low 03:42:30 - 04:12:30 5923
Gardnerville 03:57:30 -37.8 Dark Up 20.5 67.1 Low 03:42:30 - 04:12:30 5900
Yerington 03:57:30 -38.2 Dark Up 21.0 67.4 Low 03:42:30 - 04:12:30 5880
Hawthorne 03:57:31 -38.6 Dark Up 21.2 67.5 Low 03:42:31 - 04:12:31 5817
Lee Vining 03:57:33 -38.3 Dark Up 20.6 67.0 Low 03:42:33 - 04:12:33 5788
Tonopah 03:57:31 -39.8 Dark Up 22.0 68.0 Low 03:42:31 - 04:12:31 5716
Bishop 03:57:34 -38.8 Dark Up 20.9 67.2 Low 03:42:34 - 04:12:34 5705
Beatty 03:57:34 -40.1 Dark Up 21.9 67.8 Low 03:42:34 - 04:12:34 5593
Indian Springs 03:57:34 -41.0 Dark Up 22.6 68.2 Low 03:42:34 - 04:12:34 5518
Dunrhomin 03:57:11 -48.8 Dark Up 31.5 75.2 Up 03:42:11 - 04:12:11 5439
Henderson 03:57:35 -41.5 Dark Up 22.9 68.3 Low 03:42:35 - 04:12:35 5439
Wildwood 03:57:43 -38.5 Dark Up 19.5 66.0 Really Low 03:42:43 - 04:12:43 5421
CU-SBO 03:57:12 -48.8 Dark Up 31.4 75.0 Up 03:42:12 - 04:12:12 5420
Laughlin/Bullhead City 03:57:36 -41.9 Dark Up 22.9 68.2 Low 03:42:36 - 04:12:36 5342
Patrick 03:57:36 -42.4 Dark Up 23.6 68.6 Low 03:42:36 - 04:12:36 5334
Kingman/Dolan Springs 03:57:36 -42.3 Dark Up 23.3 68.4 Low 03:42:36 - 04:12:36 5322
Mohave Valley 03:57:38 -41.9 Dark Up 22.8 68.1 Low 03:42:38 - 04:12:38 5317
Idyllwild 03:57:43 -40.1 Dark Up 20.8 66.7 Low 03:42:43 - 04:12:43 5305
Lake Havasu City 03:57:38 -42.1 Dark Up 22.9 68.0 Low 03:42:38 - 04:12:38 5269
Parker 03:57:39 -42.1 Dark Up 22.8 67.9 Low 03:42:39 - 04:12:39 5235
Calipatria 03:57:43 -41.0 Dark Up 21.4 67.0 Low 03:42:43 - 04:12:43 5196
Yuma 03:57:43 -41.7 Dark Up 22.0 67.2 Low 03:42:43 - 04:12:43 5116
George/Scottsdale 03:57:37 -44.1 Dark Up 24.5 68.8 Low 03:42:37 - 04:12:37 5091

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 523746, (2024/12/17 03:53UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1  3.65   5
PPM 072946     07:35:08.7 +30:57:40  6.3  0.93   5
PPM 097636     07:32:22.7 +29:58:18  9.8  0.32   4
523746         07:32:09.4 +30:17:14 15.1         4
Positions are for J2000

Event circumstances last updated at 2022/03/31 23:01:22 UT

Marc W. Buie, Southwest Research Institute

RECON